例如有如下的 spec, 该怎么将其转化为能够发送 http 请求的 tool, 然后给相应的 agent 去使用呢... --- openapi: 3.0.3 info: title: openapi-server API version: "1.0" servers: - url: http://localhost:8080 paths: /hello: get: tags: - Greeting Resource responses: "200": description: OK content: text/plain: schema: type: string