Redis MCP Server

Instructions

Implementation Reference

• src/tools/json.py:47-67 (handler)

  The core handler function for the 'json_get' tool. It uses Redis JSON .get() to retrieve data from a specified path in a JSON document stored in Redis. Includes error handling and formats the output as an indented JSON string. The @mcp.tool() decorator registers it as an MCP tool.

  @mcp.tool()
  async def json_get(name: str, path: str = "$") -> str:
      """Retrieve a JSON value from Redis at a given path.
  
      Args:
          name: The Redis key where the JSON document is stored.
          path: The JSON path to retrieve (default: root '$').
  
      Returns:
          The retrieved JSON value or an error message.
      """
      try:
          r = RedisConnectionManager.get_connection()
          value = r.json().get(name, path)
          if value is not None:
              # Convert the value to JSON string for consistent return type
              return json.dumps(value, ensure_ascii=False, indent=2)
          else:
              return f"No data found at path '{path}' in '{name}'."
      except RedisError as e:
          return f"Error retrieving JSON value at path '{path}' in '{name}': {str(e)}"

• src/tools/json.py:47-47 (registration)

  The @mcp.tool() decorator registers the json_get function as an MCP tool.

  @mcp.tool()