AWS MCP Server

Instructions

Implementation Reference

• src/mcp_server_aws/server.py:261-264 (handler)

  Executes the dynamodb_batch_get tool by calling batch_get_item on the DynamoDB client with the provided request_items from arguments.

  elif name == "dynamodb_batch_get":
      response = dynamodb_client.batch_get_item(
          RequestItems=arguments["request_items"]
      )

• src/mcp_server_aws/tools.py:324-355 (schema)

  Defines the input schema and metadata for the dynamodb_batch_get tool.

  Tool(
      name="dynamodb_batch_get",
      description="Batch get multiple items from DynamoDB tables",
      inputSchema={
          "type": "object",
          "properties": {
              "request_items": {
                  "type": "object",
                  "description": "Map of table names to keys to retrieve",
                  "additionalProperties": {
                      "type": "object",
                      "properties": {
                          "Keys": {
                              "type": "array",
                              "items": {
                                  "type": "object"
                              }
                          },
                          "ConsistentRead": {
                              "type": "boolean"
                          },
                          "ProjectionExpression": {
                              "type": "string"
                          }
                      },
                      "required": ["Keys"]
                  }
              }
          },
          "required": ["request_items"]
      }
  ),

• src/mcp_server_aws/server.py:135-140 (registration)

  Registers all AWS tools, including dynamodb_batch_get, by returning the list from get_aws_tools() in response to list_tools requests.

  @server.list_tools()
  async def list_tools() -> list[Tool]:
      """List available AWS tools"""
      logger.debug("Handling list_tools request")
      return get_aws_tools()