Query JSON values with JSONPath expressions via @mukundakatta/jsonpath-mcp (npx)

{
  "init": {
    "request": {
      "jsonrpc": "2.0",
      "id": 1,
      "method": "initialize",
      "params": {
        "protocolVersion": "2024-11-05",
        "capabilities": {},
        "clientInfo": {
          "name": "pathfinder",
          "version": "1.0"
        }
      }
    },
    "response": {
      "result": {
        "protocolVersion": "2024-11-05",
        "capabilities": {
          "tools": {}
        },
        "serverInfo": {
          "name": "jsonpath",
          "version": "0.1.0"
        }
      },
      "jsonrpc": "2.0",
      "id": 1
    }
  },
  "tools_list": {
    "response": {
      "result": {
        "tools": [
          {
            "name": "query",
            "description": "Apply a JSONPath expression to a JSON value. result_type: value (default), path, or all.",
            "inputSchema": {
              "type": "object",
              "properties": {
                "json": {
                  "description": "Any JSON value."
                },
                "path": {
                  "type": "string",
                  "description": "JSONPath, e.g. $.items[*].price"
                },
                "result_type": {
                  "type": "string",
                  "enum": ["value", "path", "all"],
                  "default": "value"
                }
              },
              "required": ["json", "path"]
            }
          }
        ]
      },
      "jsonrpc": "2.0",
      "id": 2
    }
  },
  "query_wildcard": {
    "request": {
      "jsonrpc": "2.0",
      "id": 3,
      "method": "tools/call",
      "params": {
        "name": "query",
        "arguments": {
          "json": {
            "store": {
              "book": [
                {
                  "category": "fiction",
                  "author": "Tolkien",
                  "title": "The Lord of the Rings",
                  "price": 22.99
                },
                {
                  "category": "fiction",
                  "author": "Herbert",
                  "title": "Dune",
                  "price": 8.95
                },
                {
                  "category": "reference",
                  "author": "Kernighan",
                  "title": "The C Programming Language",
                  "price": 39.95
                }
              ],
              "bicycle": {
                "color": "red",
                "price": 399
              }
            }
          },
          "path": "$.store.book[*].title"
        }
      }
    },
    "response": {
      "result": {
        "content": [
          {
            "type": "text",
            "text": "{
  "matches": [
    "The Lord of the Rings",
    "Dune",
    "The C Programming Language"
  ]
}"
          }
        ]
      },
      "jsonrpc": "2.0",
      "id": 3
    }
  },
  "query_filter": {
    "request": {
      "jsonrpc": "2.0",
      "id": 4,
      "method": "tools/call",
      "params": {
        "name": "query",
        "arguments": {
          "json": {
            "store": {
              "book": [
                {
                  "category": "fiction",
                  "author": "Tolkien",
                  "title": "The Lord of the Rings",
                  "price": 22.99
                },
                {
                  "category": "fiction",
                  "author": "Herbert",
                  "title": "Dune",
                  "price": 8.95
                },
                {
                  "category": "reference",
                  "author": "Kernighan",
                  "title": "The C Programming Language",
                  "price": 39.95
                }
              ],
              "bicycle": {
                "color": "red",
                "price": 399
              }
            }
          },
          "path": "$.store.book[?(@.price < 25)]"
        }
      }
    },
    "response": {
      "result": {
        "content": [
          {
            "type": "text",
            "text": "{
  "matches": [
    {
      "category": "fiction",
      "author": "Tolkien",
      "title": "The Lord of the Rings",
      "price": 22.99
    },
    {
      "category": "fiction",
      "author": "Herbert",
      "title": "Dune",
      "price": 8.95
    }
  ]
}"
          }
        ]
      },
      "jsonrpc": "2.0",
      "id": 4
    }
  },
  "query_recursive_descent": {
    "request": {
      "jsonrpc": "2.0",
      "id": 5,
      "method": "tools/call",
      "params": {
        "name": "query",
        "arguments": {
          "json": {
            "store": {
              "book": [
                {
                  "category": "fiction",
                  "author": "Tolkien",
                  "title": "The Lord of the Rings",
                  "price": 22.99
                },
                {
                  "category": "fiction",
                  "author": "Herbert",
                  "title": "Dune",
                  "price": 8.95
                },
                {
                  "category": "reference",
                  "author": "Kernighan",
                  "title": "The C Programming Language",
                  "price": 39.95
                }
              ],
              "bicycle": {
                "color": "red",
                "price": 399
              }
            }
          },
          "path": "$..price"
        }
      }
    },
    "response": {
      "result": {
        "content": [
          {
            "type": "text",
            "text": "{
  "matches": [
    22.99,
    8.95,
    39.95,
    399
  ]
}"
          }
        ]
      },
      "jsonrpc": "2.0",
      "id": 5
    }
  }
}