Navigate.ts•2.99 kB
import { McpError, ErrorCode, type CallToolRequest } from "@modelcontextprotocol/sdk/types.js";
import type { ToolHandler, ToolResponse } from "./types.js";
import { chromium, type BrowserContext, type Browser } from "playwright";
import { setBrowserContext as setAllContentBrowserContext } from "./GetAllContent.js";
import { setBrowserContext as setVisibleContentBrowserContext } from "./GetVisibleContent.js";
import { setBrowserContext as setMouseActionsBrowserContext } from "./MouseActions.js";
import { setBrowserContext as setInteractiveElementsBrowserContext } from "./GetInteractiveElements.js";
let browser: Browser | null = null;
let browserContext: BrowserContext | null = null;
export const toolDefinition = {
name: "navigate",
description: "指定されたURLにブラウザでアクセスします",
inputSchema: {
type: "object",
properties: {
url: {
type: "string",
description: "アクセスするURL"
}
},
required: ["url"]
}
} as const;
export const navigateHandler: ToolHandler = async (request: CallToolRequest): Promise<ToolResponse> => {
const { url } = request.params.arguments as {
url: string;
};
// URLの形式を検証
try {
new URL(url);
} catch {
throw new McpError(
ErrorCode.InvalidParams,
`Invalid URL format: ${url}`
);
}
try {
// ブラウザが存在しない場合は新規作成
if (!browser) {
browser = await chromium.launch({
headless: true
});
const context = await browser.newContext();
browserContext = context;
// コンテキストの設定を行う（awaitで確実に完了を待つ）
await Promise.all([
setAllContentBrowserContext(context),
setVisibleContentBrowserContext(context),
setMouseActionsBrowserContext(context),
setInteractiveElementsBrowserContext(context)
]);
}
if (!browserContext) {
throw new McpError(
ErrorCode.InternalError,
"Failed to create browser context"
);
}
// 既存のページをすべて閉じる
const pages = await browserContext.pages();
await Promise.all(pages.map(page => page.close()));
// 新しいページを作成
const page = await browserContext.newPage();
// 指定されたURLに移動
await page.goto(url);
// 新しいページでブラウザコンテキストを再設定
await Promise.all([
setAllContentBrowserContext(browserContext),
setVisibleContentBrowserContext(browserContext),
setMouseActionsBrowserContext(browserContext),
setInteractiveElementsBrowserContext(browserContext)
]);
return {
content: [
{
type: "text",
text: "Successful navigation"
}
]
};
} catch (error) {
throw new McpError(
ErrorCode.InternalError,
`Navigation failed: ${error instanceof Error ? error.message : String(error)}`
);
}
};