MCP Server Scanner

MCP サーバースキャナー

概要

このツールは、Server-Sent Events（SSE）を介して実行されている MCP サーバーを検出し、利用可能なツールを列挙します。

⚠️ 重要：これは簡易的なプロトタイプであり、本番環境での利用には対応していません。迅速なフィードバックを得るために作られており、意図的に粗雑なコードになっているため、一部のエッジケースを検出できない場合があります。

目的

このツールは、インターネットに公開されている MCP サーバーに関する仮説を検証するために作成されました。MCP 認証をめぐる議論が続く中、次のことを可能にします。

• インターネットに公開されている MCP サーバーを特定する
• 適切なセキュリティ対策が実装されているかどうかを確認する

使い方

タイムアウトを任意で指定し、HTTP のベース URL を入力します。

./mcp-scanner -url http://REDACTED -timeout 5                                       
2025/04/29 12:16:56 Initiating connection
2025/04/29 12:16:56 Processing SSE stream
2025/04/29 12:16:56 Waiting for messages
2025/04/29 12:16:56 Sending message: /messages?sessionId=4ac0f3be-619e-4fc2-8b5b-cda90df2392c
2025/04/29 12:16:56 Sent message: /messages?sessionId=4ac0f3be-619e-4fc2-8b5b-cda90df2392c
2025/04/29 12:16:56 Received message: /messages?sessionId=4ac0f3be-619e-4fc2-8b5b-cda90df2392c
2025/04/29 12:16:56 Found messages endpoint: messages?sessionId=4ac0f3be-619e-4fc2-8b5b-cda90df2392c
2025/04/29 12:16:56 Successfully got the messagesEndpoint: messages?sessionId=4ac0f3be-619e-4fc2-8b5b-cda90df2392c
2025/04/29 12:16:56 Sending message: {"result":{"protocolVersion":"2024-11-05","capabilities":{"tools":{},"resources":{}},"serverInfo":{"name":"mcp-sse-server","version":"1.0.0"}},"jsonrpc":"2.0","id":0}
2025/04/29 12:16:56 Sent message: {"result":{"protocolVersion":"2024-11-05","capabilities":{"tools":{},"resources":{}},"serverInfo":{"name":"mcp-sse-server","version":"1.0.0"}},"jsonrpc":"2.0","id":0}
2025/04/29 12:16:56 Received message: {"result":{"protocolVersion":"2024-11-05","capabilities":{"tools":{},"resources":{}},"serverInfo":{"name":"mcp-sse-server","version":"1.0.0"}},"jsonrpc":"2.0","id":0}
2025/04/29 12:16:56 Sending message: {"result":{"tools":[{"name":"add","inputSchema":{"type":"object","properties":{"a":{"type":"number"},"b":{"type":"number"}},"required":["a","b"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"search","inputSchema":{"type":"object","properties":{"query":{"type":"string"},"count":{"type":"number"}},"required":["query"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}]},"jsonrpc":"2.0","id":1}
2025/04/29 12:16:56 Sent message: {"result":{"tools":[{"name":"add","inputSchema":{"type":"object","properties":{"a":{"type":"number"},"b":{"type":"number"}},"required":["a","b"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"search","inputSchema":{"type":"object","properties":{"query":{"type":"string"},"count":{"type":"number"}},"required":["query"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}]},"jsonrpc":"2.0","id":1}
2025/04/29 12:16:56 Received message: {"result":{"tools":[{"name":"add","inputSchema":{"type":"object","properties":{"a":{"type":"number"},"b":{"type":"number"}},"required":["a","b"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"search","inputSchema":{"type":"object","properties":{"query":{"type":"string"},"count":{"type":"number"}},"required":["query"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}]},"jsonrpc":"2.0","id":1}
2025/04/29 12:16:56 Tools: {"result":{"tools":[{"name":"add","inputSchema":{"type":"object","properties":{"a":{"type":"number"},"b":{"type":"number"}},"required":["a","b"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"search","inputSchema":{"type":"object","properties":{"query":{"type":"string"},"count":{"type":"number"}},"required":["query"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}]},"jsonrpc":"2.0","id":1}