# Directory Structure
```
├── .gitignore
├── .prettierrc
├── .prettierrc.json
├── build.js
├── package-lock.json
├── package.json
├── screenshots
│ └── .gitkeep
├── src
│ ├── constants.ts
│ ├── helpers.ts
│ └── index.ts
└── tsconfig.json
```
# Files
--------------------------------------------------------------------------------
/screenshots/.gitkeep:
--------------------------------------------------------------------------------
```
1 |
```
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
```
1 | node_modules
2 |
3 | build/
4 |
5 | screenshots/*.png
6 |
7 |
8 | .env
```
--------------------------------------------------------------------------------
/.prettierrc:
--------------------------------------------------------------------------------
```
1 | {
2 | "printWidth": 140,
3 | "singleQuote": true,
4 | "semi": true,
5 | "useTabs": true
6 | }
7 |
```
--------------------------------------------------------------------------------
/.prettierrc.json:
--------------------------------------------------------------------------------
```json
1 | {
2 | "trailingComma": "es5",
3 | "tabWidth": 4,
4 | "semi": false,
5 | "singleQuote": true,
6 | "printWidth": 120,
7 | "arrowParens": "avoid"
8 | }
9 |
```
--------------------------------------------------------------------------------
/src/constants.ts:
--------------------------------------------------------------------------------
```typescript
1 | export const USER_AGENT = 'Mozilla/5.0 (iPhone; CPU iPhone OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1';
```
--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
```json
1 | {
2 | "name": "mcp-playwright-screenshot",
3 | "version": "1.0.0",
4 | "main": "index.js",
5 | "type": "module",
6 | "bin": {
7 | "playwright-screenshot": "./build/index.js"
8 | },
9 | "files": [
10 | "build"
11 | ],
12 | "scripts": {
13 | "build": "tsc && chmod 755 build/index.js",
14 | "esbuild": "node build.js",
15 | "test": "echo \"Error: no test specified\" && exit 1",
16 | "prettierformat": "prettier --write",
17 | "prettierall": "prettier --write .",
18 | "lint-staged": "lint-staged"
19 | },
20 | "precommit": "lint-staged",
21 | "lint-staged": {
22 | "./**/*.{js,jsx,ts,tsx}": [
23 | "npm run prettierformat",
24 | "git add ."
25 | ]
26 | },
27 | "keywords": [],
28 | "author": "",
29 | "license": "ISC",
30 | "description": "",
31 | "dependencies": {
32 | "@modelcontextprotocol/sdk": "^1.7.0",
33 | "playwright": "^1.51.1",
34 | "zod": "^3.24.2"
35 | },
36 | "devDependencies": {
37 | "@types/node": "^22.13.13",
38 | "esbuild": "^0.25.1",
39 | "lint-staged": "^15.5.0",
40 | "pre-commit": "^1.2.2",
41 | "prettier": "^3.5.3",
42 | "typescript": "^5.8.2"
43 | }
44 | }
45 |
```
--------------------------------------------------------------------------------
/src/helpers.ts:
--------------------------------------------------------------------------------
```typescript
1 | // Helper function for making NWS API requests
2 | import { USER_AGENT } from "./constants.js";
3 | export async function makeNWSRequest<T>(url: string): Promise<T | null> {
4 | const headers = {
5 | "User-Agent": USER_AGENT,
6 | Accept: "application/geo+json",
7 | };
8 |
9 | try {
10 | const response = await fetch(url, { headers });
11 | if (!response.ok) {
12 | throw new Error(`HTTP error! status: ${response.status}`);
13 | }
14 | return (await response.json()) as T;
15 | } catch (error) {
16 | console.error("Error making NWS request:", error);
17 | return null;
18 | }
19 | }
20 |
21 | export interface AlertFeature {
22 | properties: {
23 | event?: string;
24 | areaDesc?: string;
25 | severity?: string;
26 | status?: string;
27 | headline?: string;
28 | };
29 | }
30 |
31 | // Format alert data
32 | export function formatAlert(feature: AlertFeature): string {
33 | const props = feature.properties;
34 | return [
35 | `Event: ${props.event || "Unknown"}`,
36 | `Area: ${props.areaDesc || "Unknown"}`,
37 | `Severity: ${props.severity || "Unknown"}`,
38 | `Status: ${props.status || "Unknown"}`,
39 | `Headline: ${props.headline || "No headline"}`,
40 | "---",
41 | ].join("\n");
42 | }
43 |
44 | export interface ForecastPeriod {
45 | name?: string;
46 | temperature?: number;
47 | temperatureUnit?: string;
48 | windSpeed?: string;
49 | windDirection?: string;
50 | shortForecast?: string;
51 | }
52 |
53 | export interface AlertsResponse {
54 | features: AlertFeature[];
55 | }
56 |
57 | export interface PointsResponse {
58 | properties: {
59 | forecast?: string;
60 | };
61 | }
62 |
63 | export interface ForecastResponse {
64 | properties: {
65 | periods: ForecastPeriod[];
66 | };
67 | }
```
--------------------------------------------------------------------------------
/src/index.ts:
--------------------------------------------------------------------------------
```typescript
1 | #!/usr/bin/env node
2 |
3 | import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
4 | import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
5 | import { z } from 'zod';
6 | import playwright from 'playwright';
7 | import fs from 'fs'
8 | import path from 'path'
9 |
10 | const NWS_API_BASE = 'https://api.weather.gov';
11 |
12 | // Create server instance
13 | const server = new McpServer({
14 | name: 'playwright-screenshot',
15 | version: '1.0.0',
16 | capabilities: {
17 | resources: {},
18 | tools: {},
19 | },
20 | });
21 |
22 | server.tool(
23 | "get-screenshot",
24 | "Get a screenshot of a webpage",
25 | {
26 | url: z.string().url().describe("URL of the webpage to screenshot"),
27 | },
28 | async ({ url }) => {
29 | // return {
30 | // content: [{
31 | // type: "text",
32 | // text: "Hello, World!",
33 | // }]
34 | // }
35 | // const browser = await playwright.chromium.launch();
36 | const token = process.env.LIGHTPANDA_TOKEN;
37 | const saveFolderPath = process.env.SAVE_FOLDER_PATH;
38 | if(!token){
39 | return {
40 | content: [
41 | {
42 | type: "text",
43 | text: "Please provide LIGHTPANDA_TOKEN in the environment variable",
44 | },
45 | ],
46 | }
47 | }
48 |
49 | if(!saveFolderPath){
50 | return {
51 | content: [
52 | {
53 | type: "text",
54 | text: "Please provide SAVE_FOLDER_PATH in the environment variable",
55 | },
56 | ],
57 | }
58 | }
59 | const browser = await playwright.chromium.connectOverCDP(
60 | `wss://cloud.lightpanda.io/ws?token=${token}`,
61 | );
62 | const context = await browser.newContext();
63 | const page = await context.newPage();
64 | await page.goto(url);
65 | const screenshot = await page.screenshot();
66 | const now = Date.now()
67 |
68 | const screenshotPath = path.join(saveFolderPath, `screenshot_${now}.png`);
69 | const dirPath = path.dirname(saveFolderPath);
70 | fs.mkdirSync(dirPath, { recursive: true }); // create folder if not exist
71 | // save screenshot to local
72 | fs.writeFileSync(screenshotPath, screenshot);
73 | // get the file path
74 | // const filePath = fs.realpathSync('screenshot.png');
75 |
76 | await browser.close();
77 | return {
78 | content: [
79 | {
80 | type: "text",
81 | text: `the screenshot is saved to local folder, the path is: ${screenshotPath}`
82 | },
83 | ],
84 | };
85 | }
86 | )
87 |
88 |
89 | async function main() {
90 | const transport = new StdioServerTransport();
91 | await server.connect(transport);
92 | console.info('playwright screenshot MCP Server running on stdio');
93 | }
94 |
95 | main().catch((error) => {
96 | console.error('Fatal error in main():', error);
97 | process.exit(1);
98 | });
99 |
```
--------------------------------------------------------------------------------
/tsconfig.json:
--------------------------------------------------------------------------------
```json
1 | {
2 | "compilerOptions": {
3 | /* Visit https://aka.ms/tsconfig to read more about this file */
4 |
5 | /* Projects */
6 | // "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
7 | // "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */
8 | // "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */
9 | // "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */
10 | // "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */
11 | // "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */
12 |
13 | /* Language and Environment */
14 | "target": "ES2022" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
15 | // "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */
16 | // "jsx": "preserve", /* Specify what JSX code is generated. */
17 | // "experimentalDecorators": true, /* Enable experimental support for legacy experimental decorators. */
18 | // "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */
19 | // "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
20 | // "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
21 | // "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
22 | // "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
23 | // "noLib": true, /* Disable including any library files, including the default lib.d.ts. */
24 | // "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */
25 | // "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */
26 |
27 | /* Modules */
28 | "module": "Node16" /* Specify what module code is generated. */,
29 | "rootDir": "./src" /* Specify the root folder within your source files. */,
30 | "moduleResolution": "node16" /* Specify how TypeScript looks up a file from a given module specifier. */,
31 | // "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
32 | // "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
33 | // "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */
34 | // "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */
35 | // "types": [], /* Specify type package names to be included without being referenced in a source file. */
36 | // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
37 | // "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */
38 | // "allowImportingTsExtensions": true, /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
39 | // "rewriteRelativeImportExtensions": true, /* Rewrite '.ts', '.tsx', '.mts', and '.cts' file extensions in relative import paths to their JavaScript equivalent in output files. */
40 | // "resolvePackageJsonExports": true, /* Use the package.json 'exports' field when resolving package imports. */
41 | // "resolvePackageJsonImports": true, /* Use the package.json 'imports' field when resolving imports. */
42 | // "customConditions": [], /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
43 | // "noUncheckedSideEffectImports": true, /* Check side effect imports. */
44 | // "resolveJsonModule": true, /* Enable importing .json files. */
45 | // "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */
46 | // "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
47 |
48 | /* JavaScript Support */
49 | // "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
50 | // "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */
51 | // "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
52 |
53 | /* Emit */
54 | // "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
55 | // "declarationMap": true, /* Create sourcemaps for d.ts files. */
56 | // "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
57 | // "sourceMap": true, /* Create source map files for emitted JavaScript files. */
58 | // "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */
59 | // "noEmit": true, /* Disable emitting files from a compilation. */
60 | // "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
61 | "outDir": "./build" /* Specify an output folder for all emitted files. */,
62 | // "removeComments": true, /* Disable emitting comments. */
63 | // "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
64 | // "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
65 | // "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */
66 | // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
67 | // "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */
68 | // "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
69 | // "newLine": "crlf", /* Set the newline character for emitting files. */
70 | // "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
71 | // "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */
72 | // "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */
73 | // "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */
74 | // "declarationDir": "./", /* Specify the output directory for generated declaration files. */
75 |
76 | /* Interop Constraints */
77 | // "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */
78 | // "verbatimModuleSyntax": true, /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
79 | // "isolatedDeclarations": true, /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */
80 | // "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
81 | "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
82 | // "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
83 | "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
84 |
85 | /* Type Checking */
86 | "strict": true /* Enable all strict type-checking options. */,
87 | // "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
88 | // "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
89 | // "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
90 | // "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
91 | // "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
92 | // "strictBuiltinIteratorReturn": true, /* Built-in iterators are instantiated with a 'TReturn' type of 'undefined' instead of 'any'. */
93 | // "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
94 | // "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */
95 | // "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
96 | // "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
97 | // "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
98 | // "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
99 | // "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
100 | // "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
101 | // "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */
102 | // "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */
103 | // "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */
104 | // "allowUnusedLabels": true, /* Disable error reporting for unused labels. */
105 | // "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */
106 |
107 | /* Completeness */
108 | // "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
109 | "skipLibCheck": true /* Skip type checking all .d.ts files. */
110 | },
111 | "include": ["src/**/*"],
112 | "exclude": ["node_modules", "build"]
113 | }
114 |
```