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  "slug": "mcp-error-code-32600-invalid-request-troubleshooting-guide",
  "author": "goumang",
  "title": "MCP错误码 -32600 无效请求排查指南",
  "summary": "详解 MCP JSON-RPC -32600 无效请求错误的原因和解决方案，包含 JSON 格式验证、请求结构检查和常见错误场景。",
  "content": "# MCP-JSONRPC-32600 无效请求排查指南\n\n## 概述\n\n**MCP-JSONRPC-32600** 表示发送的 JSON-RPC 请求不是有效的请求对象 [^1]。这是 JSON-RPC 协议层面的错误，通常发生在请求格式不符合规范时。\n\n## 错误响应格式\n\n```json\n{\n  \"jsonrpc\": \"2.0\",\n  \"id\": null,\n  \"error\": {\n    \"code\": -32600,\n    \"message\": \"Invalid Request\",\n    \"data\": {\n      \"reason\": \"missing jsonrpc field\"\n    }\n  }\n}\n```\n\n## 常见原因与解决方案\n\n### 原因 1：缺少 jsonrpc 字段\n\n**解决方案：** 确保请求包含 `\"jsonrpc\": \"2.0\"` 字段 [^2]。\n\n### 原因 2：缺少 method 字段\n\n**解决方案：** 确保请求包含有效的 `method` 字段。\n\n### 原因 3：id 字段格式错误\n\n**解决方案：** `id` 字段应为字符串或数字，建议使用字符串格式 [^3]。\n\n### 原因 4：JSON 格式无效\n\n**解决方案：** 验证 JSON 语法，检查引号、括号是否匹配。\n\n## 请求结构验证\n\n有效的 JSON-RPC 2.0 请求必须包含：\n- `jsonrpc`: \"2.0\"\n- `method`: 字符串\n- `id`: 字符串或数字（可选，用于需要响应的请求）\n\n## 参考来源\n\n[^1]: [JSON-RPC 2.0 Specification](https://www.jsonrpc.org/specification) - 官方协议规范，定义了 -32600 错误码\n[^2]: [MCP Error Codes](https://www.mcpevals.io/blog/mcp-error-codes) - MCP 错误码详解\n[^3]: [Stack Overflow - Json RPC error 32600](https://stackoverflow.com/questions/9988733/json-rpc-error-32600) - 社区讨论，建议 id 使用字符串格式",
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    "jsonrpc",
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      "question": "-32600 和 -32700 有什么区别？",
      "answer": "-32700 是 JSON 解析错误（语法错误），-32600 是 JSON 格式正确但不符合 JSON-RPC 请求结构。"
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      "question": "如何验证 JSON-RPC 请求格式？",
      "answer": "使用 JSON Schema 验证或手动检查必须字段：jsonrpc、method、id。"
    },
    {
      "id": "qa_003",
      "question": "id 字段可以省略吗？",
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