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**/*
README.md
LICENSE
!lib/**/*.js
!cli.js

403
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Portions Copyright (c) Microsoft Corporation.
Portions Copyright 2017 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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README.md
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# Repository setup required :wave:
Please visit the website URL :point_right: for this repository to complete the setup of this repository and configure access controls.
## Playwright MCP
This package is experimental and not yet ready for production use.
It is a subject to change and will not respect semver versioning.
### Example config
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp",
"--headless"
]
}
}
}
```
### Running headed browser (Browser with GUI).
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp"
]
}
}
}
```
### Running headed browser on Linux
When running headed browser on system w/o display or from worker processes of the IDEs,
you can run Playwright in a client-server manner. You'll run the Playwright server
from environment with the DISPLAY
```sh
npx playwright run-server
```
And then in MCP config, add following to the `env`:
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp"
],
"env": {
// Use the endpoint from the output of the server above.
"PLAYWRIGHT_WS_ENDPOINT": "ws://localhost:<port>/"
}
}
}
}
```
### Tool Modes
The tools are available in two modes:
1. **Snapshot Mode** (default): Uses accessibility snapshots for better performance and reliability
2. **Vision Mode**: Uses screenshots for visual-based interactions
To use Vision Mode, add the `--vision` flag when starting the server:
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp",
"--vision"
]
}
}
}
```
Vision Mode works best with the computer use models that are able to interact with elements using
X Y coordinate space, based on the provided screenshot.
### Snapshot Mode
The Playwright MCP provides a set of tools for browser automation. Here are all available tools:
- **browser_navigate**
- Description: Navigate to a URL
- Parameters:
- `url` (string): The URL to navigate to
- **browser_go_back**
- Description: Go back to the previous page
- Parameters: None
- **browser_go_forward**
- Description: Go forward to the next page
- Parameters: None
- **browser_click**
- Description: Perform click on a web page
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- **browser_hover**
- Description: Hover over element on page
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- **browser_drag**
- Description: Perform drag and drop between two elements
- Parameters:
- `startElement` (string): Human-readable source element description used to obtain permission to interact with the element
- `startRef` (string): Exact source element reference from the page snapshot
- `endElement` (string): Human-readable target element description used to obtain permission to interact with the element
- `endRef` (string): Exact target element reference from the page snapshot
- **browser_type**
- Description: Type text into editable element
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- `text` (string): Text to type into the element
- `submit` (boolean): Whether to submit entered text (press Enter after)
- **browser_press_key**
- Description: Press a key on the keyboard
- Parameters:
- `key` (string): Name of the key to press or a character to generate, such as `ArrowLeft` or `a`
- **browser_snapshot**
- Description: Capture accessibility snapshot of the current page (better than screenshot)
- Parameters: None
- **browser_save_as_pdf**
- Description: Save page as PDF
- Parameters: None
- **browser_wait**
- Description: Wait for a specified time in seconds
- Parameters:
- `time` (number): The time to wait in seconds (capped at 10 seconds)
- **browser_close**
- Description: Close the page
- Parameters: None
### Vision Mode
Vision Mode provides tools for visual-based interactions using screenshots. Here are all available tools:
- **browser_navigate**
- Description: Navigate to a URL
- Parameters:
- `url` (string): The URL to navigate to
- **browser_go_back**
- Description: Go back to the previous page
- Parameters: None
- **browser_go_forward**
- Description: Go forward to the next page
- Parameters: None
- **browser_screenshot**
- Description: Capture screenshot of the current page
- Parameters: None
- **browser_move_mouse**
- Description: Move mouse to specified coordinates
- Parameters:
- `x` (number): X coordinate
- `y` (number): Y coordinate
- **browser_click**
- Description: Click at specified coordinates
- Parameters:
- `x` (number): X coordinate to click at
- `y` (number): Y coordinate to click at
- **browser_drag**
- Description: Perform drag and drop operation
- Parameters:
- `startX` (number): Start X coordinate
- `startY` (number): Start Y coordinate
- `endX` (number): End X coordinate
- `endY` (number): End Y coordinate
- **browser_type**
- Description: Type text at specified coordinates
- Parameters:
- `text` (string): Text to type
- `submit` (boolean): Whether to submit entered text (press Enter after)
- **browser_press_key**
- Description: Press a key on the keyboard
- Parameters:
- `key` (string): Name of the key to press or a character to generate, such as `ArrowLeft` or `a`
- **browser_save_as_pdf**
- Description: Save page as PDF
- Parameters: None
- **browser_wait**
- Description: Wait for a specified time in seconds
- Parameters:
- `time` (number): The time to wait in seconds (capped at 10 seconds)
- **browser_close**
- Description: Close the page
- Parameters: None

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#!/usr/bin/env node
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
require('./lib/program');

199
eslint.config.mjs Normal file
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@ -0,0 +1,199 @@
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import typescriptEslint from "@typescript-eslint/eslint-plugin";
import tsParser from "@typescript-eslint/parser";
import notice from "eslint-plugin-notice";
import path from "path";
import { fileURLToPath } from "url";
import stylistic from "@stylistic/eslint-plugin";
import importRules from "eslint-plugin-import";
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const plugins = {
"@stylistic": stylistic,
"@typescript-eslint": typescriptEslint,
notice,
import: importRules,
};
export const baseRules = {
"@typescript-eslint/no-unused-vars": [
2,
{ args: "none", caughtErrors: "none" },
],
/**
* Enforced rules
*/
// syntax preferences
"object-curly-spacing": ["error", "always"],
quotes: [
2,
"single",
{
avoidEscape: true,
allowTemplateLiterals: true,
},
],
"jsx-quotes": [2, "prefer-single"],
"no-extra-semi": 2,
"@stylistic/semi": [2],
"comma-style": [2, "last"],
"wrap-iife": [2, "inside"],
"spaced-comment": [
2,
"always",
{
markers: ["*"],
},
],
eqeqeq: [2],
"accessor-pairs": [
2,
{
getWithoutSet: false,
setWithoutGet: false,
},
],
"brace-style": [2, "1tbs", { allowSingleLine: true }],
curly: [2, "multi-or-nest", "consistent"],
"new-parens": 2,
"arrow-parens": [2, "as-needed"],
"prefer-const": 2,
"quote-props": [2, "consistent"],
"nonblock-statement-body-position": [2, "below"],
// anti-patterns
"no-var": 2,
"no-with": 2,
"no-multi-str": 2,
"no-caller": 2,
"no-implied-eval": 2,
"no-labels": 2,
"no-new-object": 2,
"no-octal-escape": 2,
"no-self-compare": 2,
"no-shadow-restricted-names": 2,
"no-cond-assign": 2,
"no-debugger": 2,
"no-dupe-keys": 2,
"no-duplicate-case": 2,
"no-empty-character-class": 2,
"no-unreachable": 2,
"no-unsafe-negation": 2,
radix: 2,
"valid-typeof": 2,
"no-implicit-globals": [2],
"no-unused-expressions": [
2,
{ allowShortCircuit: true, allowTernary: true, allowTaggedTemplates: true },
],
"no-proto": 2,
// es2015 features
"require-yield": 2,
"template-curly-spacing": [2, "never"],
// spacing details
"space-infix-ops": 2,
"space-in-parens": [2, "never"],
"array-bracket-spacing": [2, "never"],
"comma-spacing": [2, { before: false, after: true }],
"keyword-spacing": [2, "always"],
"space-before-function-paren": [
2,
{
anonymous: "never",
named: "never",
asyncArrow: "always",
},
],
"no-whitespace-before-property": 2,
"keyword-spacing": [
2,
{
overrides: {
if: { after: true },
else: { after: true },
for: { after: true },
while: { after: true },
do: { after: true },
switch: { after: true },
return: { after: true },
},
},
],
"arrow-spacing": [
2,
{
after: true,
before: true,
},
],
"@stylistic/func-call-spacing": 2,
"@stylistic/type-annotation-spacing": 2,
// file whitespace
"no-multiple-empty-lines": [2, { max: 2, maxEOF: 0 }],
"no-mixed-spaces-and-tabs": 2,
"no-trailing-spaces": 2,
"linebreak-style": [process.platform === "win32" ? 0 : 2, "unix"],
indent: [
2,
2,
{ SwitchCase: 1, CallExpression: { arguments: 2 }, MemberExpression: 2 },
],
"key-spacing": [
2,
{
beforeColon: false,
},
],
"eol-last": 2,
// copyright
"notice/notice": [
2,
{
mustMatch: "Copyright",
templateFile: path.join(__dirname, "utils", "copyright.js"),
},
],
// react
"react/react-in-jsx-scope": 0,
};
const languageOptions = {
parser: tsParser,
ecmaVersion: 9,
sourceType: "module",
};
export default [
{
ignores: ["**/*.js"],
},
{
files: ["**/*.ts", "**/*.tsx"],
plugins,
languageOptions,
rules: baseRules,
},
];

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{
"name": "@playwright/mcp",
"version": "0.0.1",
"description": "Playwright Tools for MCP",
"repository": {
"type": "git",
"url": "git+https://github.com/microsoft/playwright-mcp.git"
},
"homepage": "https://playwright.dev",
"engines": {
"node": ">=18"
},
"author": {
"name": "Microsoft Corporation"
},
"license": "Apache-2.0",
"scripts": {
"build": "tsc",
"lint": "eslint .",
"watch": "tsc --watch"
},
"exports": {
"./servers/server": "./lib/servers/server.js",
"./servers/screenshot": "./lib/servers/screenshot.js",
"./servers/snapshot": "./lib/servers/snapshot.js",
"./tools/common": "./lib/tools/common.js",
"./tools/screenshot": "./lib/tools/screenshot.js",
"./tools/snapshot": "./lib/tools/snapshot.js",
"./package.json": "./package.json"
},
"dependencies": {
"@modelcontextprotocol/sdk": "^1.6.1",
"commander": "^13.1.0",
"playwright": "1.52.0-alpha-2025-03-21",
"zod-to-json-schema": "^3.24.4"
},
"devDependencies": {
"@eslint/eslintrc": "^3.2.0",
"@eslint/js": "^9.19.0",
"@stylistic/eslint-plugin": "^3.0.1",
"@typescript-eslint/eslint-plugin": "^8.26.1",
"@typescript-eslint/parser": "^8.26.1",
"@typescript-eslint/utils": "^8.26.1",
"@types/node": "^22.13.10",
"eslint": "^9.19.0",
"eslint-plugin-import": "^2.31.0",
"eslint-plugin-notice": "^1.0.0",
"typescript": "^5.8.2"
},
"bin": {
"mcp": "cli.js"
}
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { defineConfig } from '@playwright/test';
export default defineConfig({
testDir: './tests',
fullyParallel: true,
forbidOnly: !!process.env.CI,
retries: process.env.CI ? 2 : 0,
workers: process.env.CI ? 1 : undefined,
reporter: 'list',
projects: [{ name: 'default' }],
});

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as playwright from 'playwright';
export class Context {
private _launchOptions: playwright.LaunchOptions;
private _page: playwright.Page | undefined;
private _console: playwright.ConsoleMessage[] = [];
private _initializePromise: Promise<void> | undefined;
constructor(launchOptions: playwright.LaunchOptions) {
this._launchOptions = launchOptions;
}
async ensurePage(): Promise<playwright.Page> {
await this._initialize();
return this._page!;
}
async ensureConsole(): Promise<playwright.ConsoleMessage[]> {
await this._initialize();
return this._console;
}
async close() {
const page = await this.ensurePage();
await page.close();
this._initializePromise = undefined;
}
private async _initialize() {
if (this._initializePromise)
return this._initializePromise;
this._initializePromise = (async () => {
const browser = await this._createBrowser();
this._page = await browser.newPage();
this._page.on('console', event => this._console.push(event));
this._page.on('framenavigated', () => this._console.length = 0);
})();
return this._initializePromise;
}
private async _createBrowser(): Promise<playwright.Browser> {
if (process.env.PLAYWRIGHT_WS_ENDPOINT) {
const url = new URL(process.env.PLAYWRIGHT_WS_ENDPOINT);
url.searchParams.set('launch-options', JSON.stringify(this._launchOptions));
return await playwright.chromium.connect(String(url));
}
return await playwright.chromium.launch({ channel: 'chrome', ...this._launchOptions });
}
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { program } from 'commander';
import { Server } from './server';
import * as snapshot from './tools/snapshot';
import * as common from './tools/common';
import * as screenshot from './tools/screenshot';
import { console } from './resources/console';
import type { LaunchOptions } from './server';
import type { Tool } from './tools/tool';
import type { Resource } from './resources/resource';
const packageJSON = require('../package.json');
program
.version('Version ' + packageJSON.version)
.name(packageJSON.name)
.option('--headless', 'Run browser in headless mode, headed by default')
.option('--vision', 'Run server that uses screenshots (Aria snapshots are used by default)')
.action(async options => {
const launchOptions: LaunchOptions = {
headless: !!options.headless,
};
const tools = options.vision ? screenshotTools : snapshotTools;
const server = new Server({
name: 'Playwright',
version: packageJSON.version,
tools,
resources,
}, launchOptions);
setupExitWatchdog(server);
await server.start();
});
function setupExitWatchdog(server: Server) {
process.stdin.on('close', async () => {
setTimeout(() => process.exit(0), 15000);
await server?.stop();
process.exit(0);
});
}
const commonTools: Tool[] = [
common.pressKey,
common.wait,
common.pdf,
common.close,
];
const snapshotTools: Tool[] = [
common.navigate(true),
common.goBack(true),
common.goForward(true),
snapshot.snapshot,
snapshot.click,
snapshot.hover,
snapshot.type,
...commonTools,
];
const screenshotTools: Tool[] = [
common.navigate(false),
common.goBack(false),
common.goForward(false),
screenshot.screenshot,
screenshot.moveMouse,
screenshot.click,
screenshot.drag,
screenshot.type,
...commonTools,
];
const resources: Resource[] = [
console,
];
program.parse(process.argv);

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type { Resource, ResourceResult } from './resource';
export const console: Resource = {
schema: {
uri: 'browser://console',
name: 'Page console',
mimeType: 'text/plain',
},
read: async (context, uri) => {
const result: ResourceResult[] = [];
for (const message of await context.ensureConsole()) {
result.push({
uri,
mimeType: 'text/plain',
text: `[${message.type().toUpperCase()}] ${message.text()}`,
});
}
return result;
},
};

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type { Context } from '../context';
export type ResourceSchema = {
uri: string;
name: string;
description?: string;
mimeType?: string;
};
export type ResourceResult = {
uri: string;
mimeType?: string;
text?: string;
blob?: string;
};
export type Resource = {
schema: ResourceSchema;
read: (context: Context, uri: string) => Promise<ResourceResult[]>;
};

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { Server as MCPServer } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { CallToolRequestSchema, ListResourcesRequestSchema, ListToolsRequestSchema, ReadResourceRequestSchema } from '@modelcontextprotocol/sdk/types.js';
import * as playwright from 'playwright';
import { Context } from './context';
import type { Tool } from './tools/tool';
import type { Resource } from './resources/resource';
export type LaunchOptions = {
headless?: boolean;
};
export class Server {
private _server: MCPServer;
private _tools: Tool[];
private _page: playwright.Page | undefined;
private _context: Context;
constructor(options: { name: string, version: string, tools: Tool[], resources: Resource[] }, launchOptions: LaunchOptions) {
const { name, version, tools, resources } = options;
this._context = new Context(launchOptions);
this._server = new MCPServer({ name, version }, {
capabilities: {
tools: {},
resources: {},
}
});
this._tools = tools;
this._server.setRequestHandler(ListToolsRequestSchema, async () => {
return { tools: tools.map(tool => tool.schema) };
});
this._server.setRequestHandler(ListResourcesRequestSchema, async () => {
return { resources: resources.map(resource => resource.schema) };
});
this._server.setRequestHandler(CallToolRequestSchema, async request => {
const tool = this._tools.find(tool => tool.schema.name === request.params.name);
if (!tool) {
return {
content: [{ type: 'text', text: `Tool "${request.params.name}" not found` }],
isError: true,
};
}
try {
const result = await tool.handle(this._context, request.params.arguments);
return result;
} catch (error) {
return {
content: [{ type: 'text', text: String(error) }],
isError: true,
};
}
});
this._server.setRequestHandler(ReadResourceRequestSchema, async request => {
const resource = resources.find(resource => resource.schema.uri === request.params.uri);
if (!resource)
return { contents: [] };
const contents = await resource.read(this._context, request.params.uri);
return { contents };
});
}
async start() {
const transport = new StdioServerTransport();
await this._server.connect(transport);
}
async stop() {
await this._server.close();
await this._page?.context()?.browser()?.close();
}
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import os from 'os';
import path from 'path';
import { z } from 'zod';
import { zodToJsonSchema } from 'zod-to-json-schema';
import { captureAriaSnapshot, runAndWait } from './utils';
import type { ToolFactory, Tool } from './tool';
const navigateSchema = z.object({
url: z.string().describe('The URL to navigate to'),
});
export const navigate: ToolFactory = snapshot => ({
schema: {
name: 'browser_navigate',
description: 'Navigate to a URL',
inputSchema: zodToJsonSchema(navigateSchema),
},
handle: async (context, params) => {
const validatedParams = navigateSchema.parse(params);
const page = await context.ensurePage();
await page.goto(validatedParams.url, { waitUntil: 'domcontentloaded' });
// Cap load event to 5 seconds, the page is operational at this point.
await page.waitForLoadState('load', { timeout: 5000 }).catch(() => {});
if (snapshot)
return captureAriaSnapshot(page);
return {
content: [{
type: 'text',
text: `Navigated to ${validatedParams.url}`,
}],
};
},
});
const goBackSchema = z.object({});
export const goBack: ToolFactory = snapshot => ({
schema: {
name: 'browser_go_back',
description: 'Go back to the previous page',
inputSchema: zodToJsonSchema(goBackSchema),
},
handle: async context => {
return await runAndWait(context, 'Navigated back', async () => {
const page = await context.ensurePage();
await page.goBack();
}, snapshot);
},
});
const goForwardSchema = z.object({});
export const goForward: ToolFactory = snapshot => ({
schema: {
name: 'browser_go_forward',
description: 'Go forward to the next page',
inputSchema: zodToJsonSchema(goForwardSchema),
},
handle: async context => {
return await runAndWait(context, 'Navigated forward', async () => {
const page = await context.ensurePage();
await page.goForward();
}, snapshot);
},
});
const waitSchema = z.object({
time: z.number().describe('The time to wait in seconds'),
});
export const wait: Tool = {
schema: {
name: 'browser_wait',
description: 'Wait for a specified time in seconds',
inputSchema: zodToJsonSchema(waitSchema),
},
handle: async (context, params) => {
const validatedParams = waitSchema.parse(params);
const page = await context.ensurePage();
await page.waitForTimeout(Math.min(10000, validatedParams.time * 1000));
return {
content: [{
type: 'text',
text: `Waited for ${validatedParams.time} seconds`,
}],
};
},
};
const pressKeySchema = z.object({
key: z.string().describe('Name of the key to press or a character to generate, such as `ArrowLeft` or `a`'),
});
export const pressKey: Tool = {
schema: {
name: 'browser_press_key',
description: 'Press a key on the keyboard',
inputSchema: zodToJsonSchema(pressKeySchema),
},
handle: async (context, params) => {
const validatedParams = pressKeySchema.parse(params);
return await runAndWait(context, `Pressed key ${validatedParams.key}`, async page => {
await page.keyboard.press(validatedParams.key);
});
},
};
const pdfSchema = z.object({});
export const pdf: Tool = {
schema: {
name: 'browser_save_as_pdf',
description: 'Save page as PDF',
inputSchema: zodToJsonSchema(pdfSchema),
},
handle: async context => {
const page = await context.ensurePage();
const fileName = path.join(os.tmpdir(), `/page-${new Date().toISOString()}.pdf`);
await page.pdf({ path: fileName });
return {
content: [{
type: 'text',
text: `Saved as ${fileName}`,
}],
};
},
};
const closeSchema = z.object({});
export const close: Tool = {
schema: {
name: 'browser_close',
description: 'Close the page',
inputSchema: zodToJsonSchema(closeSchema),
},
handle: async context => {
await context.close();
return {
content: [{
type: 'text',
text: `Page closed`,
}],
};
},
};

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { z } from 'zod';
import { zodToJsonSchema } from 'zod-to-json-schema';
import { runAndWait } from './utils';
import type { Tool } from './tool';
export const screenshot: Tool = {
schema: {
name: 'browser_screenshot',
description: 'Take a screenshot of the current page',
inputSchema: zodToJsonSchema(z.object({})),
},
handle: async context => {
const page = await context.ensurePage();
const screenshot = await page.screenshot({ type: 'jpeg', quality: 50, scale: 'css' });
return {
content: [{ type: 'image', data: screenshot.toString('base64'), mimeType: 'image/jpeg' }],
};
},
};
const elementSchema = z.object({
element: z.string().describe('Human-readable element description used to obtain permission to interact with the element'),
});
const moveMouseSchema = elementSchema.extend({
x: z.number().describe('X coordinate'),
y: z.number().describe('Y coordinate'),
});
export const moveMouse: Tool = {
schema: {
name: 'browser_move_mouse',
description: 'Move mouse to a given position',
inputSchema: zodToJsonSchema(moveMouseSchema),
},
handle: async (context, params) => {
const validatedParams = moveMouseSchema.parse(params);
const page = await context.ensurePage();
await page.mouse.move(validatedParams.x, validatedParams.y);
return {
content: [{ type: 'text', text: `Moved mouse to (${validatedParams.x}, ${validatedParams.y})` }],
};
},
};
const clickSchema = elementSchema.extend({
x: z.number().describe('X coordinate'),
y: z.number().describe('Y coordinate'),
});
export const click: Tool = {
schema: {
name: 'browser_click',
description: 'Click left mouse button',
inputSchema: zodToJsonSchema(clickSchema),
},
handle: async (context, params) => {
return await runAndWait(context, 'Clicked mouse', async page => {
const validatedParams = clickSchema.parse(params);
await page.mouse.move(validatedParams.x, validatedParams.y);
await page.mouse.down();
await page.mouse.up();
});
},
};
const dragSchema = elementSchema.extend({
startX: z.number().describe('Start X coordinate'),
startY: z.number().describe('Start Y coordinate'),
endX: z.number().describe('End X coordinate'),
endY: z.number().describe('End Y coordinate'),
});
export const drag: Tool = {
schema: {
name: 'browser_drag',
description: 'Drag left mouse button',
inputSchema: zodToJsonSchema(dragSchema),
},
handle: async (context, params) => {
const validatedParams = dragSchema.parse(params);
return await runAndWait(context, `Dragged mouse from (${validatedParams.startX}, ${validatedParams.startY}) to (${validatedParams.endX}, ${validatedParams.endY})`, async page => {
await page.mouse.move(validatedParams.startX, validatedParams.startY);
await page.mouse.down();
await page.mouse.move(validatedParams.endX, validatedParams.endY);
await page.mouse.up();
});
},
};
const typeSchema = z.object({
text: z.string().describe('Text to type into the element'),
submit: z.boolean().describe('Whether to submit entered text (press Enter after)'),
});
export const type: Tool = {
schema: {
name: 'browser_type',
description: 'Type text',
inputSchema: zodToJsonSchema(typeSchema),
},
handle: async (context, params) => {
const validatedParams = typeSchema.parse(params);
return await runAndWait(context, `Typed text "${validatedParams.text}"`, async page => {
await page.keyboard.type(validatedParams.text);
if (validatedParams.submit)
await page.keyboard.press('Enter');
});
},
};

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { z } from 'zod';
import zodToJsonSchema from 'zod-to-json-schema';
import { captureAriaSnapshot, runAndWait } from './utils';
import type * as playwright from 'playwright';
import type { Tool } from './tool';
export const snapshot: Tool = {
schema: {
name: 'browser_snapshot',
description: 'Capture accessibility snapshot of the current page, this is better than screenshot',
inputSchema: zodToJsonSchema(z.object({})),
},
handle: async context => {
return await captureAriaSnapshot(await context.ensurePage());
},
};
const elementSchema = z.object({
element: z.string().describe('Human-readable element description used to obtain permission to interact with the element'),
ref: z.string().describe('Exact target element reference from the page snapshot'),
});
export const click: Tool = {
schema: {
name: 'browser_click',
description: 'Perform click on a web page',
inputSchema: zodToJsonSchema(elementSchema),
},
handle: async (context, params) => {
const validatedParams = elementSchema.parse(params);
return runAndWait(context, `"${validatedParams.element}" clicked`, page => refLocator(page, validatedParams.ref).click(), true);
},
};
const dragSchema = z.object({
startElement: z.string().describe('Human-readable source element description used to obtain the permission to interact with the element'),
startRef: z.string().describe('Exact source element reference from the page snapshot'),
endElement: z.string().describe('Human-readable target element description used to obtain the permission to interact with the element'),
endRef: z.string().describe('Exact target element reference from the page snapshot'),
});
export const drag: Tool = {
schema: {
name: 'browser_drag',
description: 'Perform drag and drop between two elements',
inputSchema: zodToJsonSchema(dragSchema),
},
handle: async (context, params) => {
const validatedParams = dragSchema.parse(params);
return runAndWait(context, `Dragged "${validatedParams.startElement}" to "${validatedParams.endElement}"`, async page => {
const startLocator = refLocator(page, validatedParams.startRef);
const endLocator = refLocator(page, validatedParams.endRef);
await startLocator.dragTo(endLocator);
}, true);
},
};
export const hover: Tool = {
schema: {
name: 'browser_hover',
description: 'Hover over element on page',
inputSchema: zodToJsonSchema(elementSchema),
},
handle: async (context, params) => {
const validatedParams = elementSchema.parse(params);
return runAndWait(context, `Hovered over "${validatedParams.element}"`, page => refLocator(page, validatedParams.ref).hover(), true);
},
};
const typeSchema = elementSchema.extend({
text: z.string().describe('Text to type into the element'),
submit: z.boolean().describe('Whether to submit entered text (press Enter after)'),
});
export const type: Tool = {
schema: {
name: 'browser_type',
description: 'Type text into editable element',
inputSchema: zodToJsonSchema(typeSchema),
},
handle: async (context, params) => {
const validatedParams = typeSchema.parse(params);
return await runAndWait(context, `Typed "${validatedParams.text}" into "${validatedParams.element}"`, async page => {
const locator = refLocator(page, validatedParams.ref);
await locator.fill(validatedParams.text);
if (validatedParams.submit)
await locator.press('Enter');
}, true);
},
};
function refLocator(page: playwright.Page, ref: string): playwright.Locator {
return page.locator(`aria-ref=${ref}`);
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type { ImageContent, TextContent } from '@modelcontextprotocol/sdk/types';
import type { JsonSchema7Type } from 'zod-to-json-schema';
import type { Context } from '../context';
export type ToolSchema = {
name: string;
description: string;
inputSchema: JsonSchema7Type;
};
export type ToolResult = {
content: (ImageContent | TextContent)[];
isError?: boolean;
};
export type Tool = {
schema: ToolSchema;
handle: (context: Context, params?: Record<string, any>) => Promise<ToolResult>;
};
export type ToolFactory = (snapshot: boolean) => Tool;

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type * as playwright from 'playwright';
import type { ToolResult } from './tool';
import type { Context } from '../context';
async function waitForCompletion<R>(page: playwright.Page, callback: () => Promise<R>): Promise<R> {
const requests = new Set<playwright.Request>();
let frameNavigated = false;
let waitCallback: () => void = () => {};
const waitBarrier = new Promise<void>(f => { waitCallback = f; });
const requestListener = (request: playwright.Request) => requests.add(request);
const requestFinishedListener = (request: playwright.Request) => {
requests.delete(request);
if (!requests.size)
waitCallback();
};
const frameNavigateListener = (frame: playwright.Frame) => {
if (frame.parentFrame())
return;
frameNavigated = true;
dispose();
clearTimeout(timeout);
void frame.waitForLoadState('load').then(() => {
waitCallback();
});
};
const onTimeout = () => {
dispose();
waitCallback();
};
page.on('request', requestListener);
page.on('requestfinished', requestFinishedListener);
page.on('framenavigated', frameNavigateListener);
const timeout = setTimeout(onTimeout, 10000);
const dispose = () => {
page.off('request', requestListener);
page.off('requestfinished', requestFinishedListener);
page.off('framenavigated', frameNavigateListener);
clearTimeout(timeout);
};
try {
const result = await callback();
if (!requests.size && !frameNavigated)
waitCallback();
await waitBarrier;
await page.evaluate(() => new Promise(f => setTimeout(f, 1000)));
return result;
} finally {
dispose();
}
}
export async function runAndWait(context: Context, status: string, callback: (page: playwright.Page) => Promise<any>, snapshot: boolean = false): Promise<ToolResult> {
const page = await context.ensurePage();
await waitForCompletion(page, () => callback(page));
return snapshot ? captureAriaSnapshot(page, status) : {
content: [{ type: 'text', text: status }],
};
}
export async function captureAriaSnapshot(page: playwright.Page, status: string = ''): Promise<ToolResult> {
const snapshot = await page.locator('html').ariaSnapshot({ ref: true });
return {
content: [{ type: 'text', text: `${status ? `${status}\n` : ''}
- Page URL: ${page.url()}
- Page Title: ${await page.title()}
- Page Snapshot
\`\`\`yaml
${snapshot}
\`\`\`
`
}],
};
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test, expect } from './fixtures';
test('test tool list', async ({ server }) => {
const list = await server.send({
jsonrpc: '2.0',
id: 1,
method: 'tools/list',
});
expect(list).toEqual(expect.objectContaining({
id: 1,
result: expect.objectContaining({
tools: [
expect.objectContaining({
name: 'browser_navigate',
}),
expect.objectContaining({
name: 'browser_go_back',
}),
expect.objectContaining({
name: 'browser_go_forward',
}),
expect.objectContaining({
name: 'browser_snapshot',
}),
expect.objectContaining({
name: 'browser_click',
}),
expect.objectContaining({
name: 'browser_hover',
}),
expect.objectContaining({
name: 'browser_type',
}),
expect.objectContaining({
name: 'browser_press_key',
}),
expect.objectContaining({
name: 'browser_wait',
}),
expect.objectContaining({
name: 'browser_save_as_pdf',
}),
expect.objectContaining({
name: 'browser_close',
}),
],
}),
}));
});
test('test resources list', async ({ server }) => {
const list = await server.send({
jsonrpc: '2.0',
id: 2,
method: 'resources/list',
});
expect(list).toEqual(expect.objectContaining({
id: 2,
result: expect.objectContaining({
resources: [
expect.objectContaining({
uri: 'browser://console',
mimeType: 'text/plain',
}),
],
}),
}));
});
test('test browser_navigate', async ({ server }) => {
const response = await server.send({
jsonrpc: '2.0',
id: 2,
method: 'tools/call',
params: {
name: 'browser_navigate',
arguments: {
url: 'data:text/html,<html><title>Title</title><body>Hello, world!</body></html>',
},
},
});
expect(response).toEqual(expect.objectContaining({
id: 2,
result: {
content: [{
type: 'text',
text: `
- Page URL: data:text/html,<html><title>Title</title><body>Hello, world!</body></html>
- Page Title: Title
- Page Snapshot
\`\`\`yaml
- document [ref=s1e2]: Hello, world!
\`\`\`
`,
}],
},
}));
});
test('test browser_click', async ({ server }) => {
await server.send({
jsonrpc: '2.0',
id: 2,
method: 'tools/call',
params: {
name: 'browser_navigate',
arguments: {
url: 'data:text/html,<html><title>Title</title><button>Submit</button></html>',
},
},
});
const response = await server.send({
jsonrpc: '2.0',
id: 3,
method: 'tools/call',
params: {
name: 'browser_click',
arguments: {
element: 'Submit button',
ref: 's1e4',
},
},
});
expect(response).toEqual(expect.objectContaining({
id: 3,
result: {
content: [{
type: 'text',
text: `\"Submit button\" clicked
- Page URL: data:text/html,<html><title>Title</title><button>Submit</button></html>
- Page Title: Title
- Page Snapshot
\`\`\`yaml
- document [ref=s2e2]:
- button \"Submit\" [ref=s2e4]
\`\`\`
`,
}],
},
}));
});

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import path from 'path';
import { spawn } from 'child_process';
import EventEmitter from 'events';
import { test as baseTest, expect } from '@playwright/test';
import type { ChildProcess } from 'child_process';
export { expect } from '@playwright/test';
class MCPServer extends EventEmitter {
private _child: ChildProcess;
private _messageQueue: any[] = [];
private _messageResolvers: ((value: any) => void)[] = [];
private _buffer: string = '';
constructor(command: string, args: string[]) {
super();
this._child = spawn(command, args, {
stdio: ['pipe', 'pipe', 'pipe'],
});
this._child.stdout?.on('data', data => {
this._buffer += data.toString();
let newlineIndex: number;
while ((newlineIndex = this._buffer.indexOf('\n')) !== -1) {
const message = this._buffer.slice(0, newlineIndex).trim();
this._buffer = this._buffer.slice(newlineIndex + 1);
if (!message)
continue;
const parsed = JSON.parse(message);
if (this._messageResolvers.length > 0) {
const resolve = this._messageResolvers.shift();
resolve!(parsed);
} else {
this._messageQueue.push(parsed);
}
}
});
this._child.stderr?.on('data', data => {
throw new Error('Server stderr:', data.toString());
});
this._child.on('exit', code => {
if (code !== 0)
throw new Error(`Server exited with code ${code}`);
});
}
async send(message: any, options?: { timeout?: number }): Promise<void> {
await this.sendNoReply(message);
return this._waitForResponse(options || {});
}
async sendNoReply(message: any): Promise<void> {
const jsonMessage = JSON.stringify(message) + '\n';
await new Promise<void>((resolve, reject) => {
this._child.stdin?.write(jsonMessage, err => {
if (err)
reject(err);
else
resolve();
});
});
}
private async _waitForResponse(options: { timeout?: number }): Promise<any> {
if (this._messageQueue.length > 0)
return this._messageQueue.shift();
return new Promise((resolve, reject) => {
const timeoutId = setTimeout(() => {
reject(new Error('Timeout waiting for message'));
}, options.timeout || 5000);
this._messageResolvers.push(message => {
clearTimeout(timeoutId);
resolve(message);
});
});
}
async close(): Promise<void> {
return new Promise(resolve => {
this._child.on('exit', () => resolve());
this._child.stdin?.end();
});
}
}
export const test = baseTest.extend<{ server: MCPServer }>({
server: async ({}, use) => {
const server = new MCPServer('node', [path.join(__dirname, '../cli.js'), '--headless']);
const initialize = await server.send({
jsonrpc: '2.0',
id: 0,
method: 'initialize',
params: {
protocolVersion: '2024-11-05',
capabilities: {},
clientInfo: {
name: 'Playwright Test',
version: '0.0.0',
},
},
});
expect(initialize).toEqual(expect.objectContaining({
id: 0,
result: expect.objectContaining({
protocolVersion: '2024-11-05',
capabilities: {
tools: {},
resources: {},
},
serverInfo: expect.objectContaining({
name: 'Playwright',
version: expect.any(String),
}),
}),
}));
await server.sendNoReply({
jsonrpc: '2.0',
method: 'notifications/initialized',
});
await use(server);
await server.close();
},
});

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{
"compilerOptions": {
"target": "ESNext",
"skipLibCheck": true,
"esModuleInterop": true,
"moduleResolution": "node",
"strict": true,
"module": "ESNext",
"outDir": "./lib"
},
"include": [
"src",
],
}

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/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/