Gmail Batch Get Metadata

Immutable Catalog Entry

This descriptor comes from the active versioned Portal catalog.

READgoogle.gmail_batch_get_metadata

• Contract tier: agent_ready
• Risk: read
• Catalog version: google-2026.07.12.2
• Descriptor hash: 4fb46100adbbeea492a2f8b0df24c5c90f1967b98a0b0e182ae40c10eb2edb2a

Use this read-only Gmail tool to fetch metadata for multiple message IDs. It accepts snake_case arguments and common camelCase aliases through the MCP wrapper. It reads the configured user's Google data through per-request OAuth, does not mutate provider state, and returns a normalized bounded envelope.

Request Body

{
  "jsonrpc": "2.0",
  "id": "google-gmail-batch-get-metadata-example",
  "method": "tools/call",
  "params": {
    "name": "google.gmail_batch_get_metadata",
    "arguments": {
      "message_ids": [],
      "metadata_headers": ""
    }
  }
}

Arguments Schema

{
  "type": "object",
  "title": "gmail_batch_get_metadataArguments",
  "required": [
    "message_ids"
  ],
  "properties": {
    "message_ids": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "title": "Message Ids",
      "description": "List of Gmail message IDs."
    },
    "metadata_headers": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        {
          "type": "null"
        }
      ],
      "title": "Metadata Headers",
      "default": null,
      "description": "Gmail metadata headers to return."
    }
  },
  "additionalProperties": false
}

Output Schema

{
  "type": "object",
  "required": [
    "ok",
    "data",
    "error",
    "meta"
  ],
  "properties": {
    "ok": {
      "type": "boolean",
      "description": "Whether the local or Google provider operation completed successfully."
    },
    "data": {
      "anyOf": [
        {
          "type": "object",
          "additionalProperties": true
        },
        {
          "type": "array",
          "items": {}
        },
        {
          "type": "string"
        },
        {
          "type": "number"
        },
        {
          "type": "boolean"
        },
        {
          "type": "null"
        }
      ],
      "description": "Bounded local navigation or Google provider result when ok is true."
    },
    "meta": {
      "type": "object",
      "description": "Safe timing, pagination, cache, request, and truncation metadata.",
      "additionalProperties": true
    },
    "error": {
      "anyOf": [
        {
          "type": "object",
          "additionalProperties": true
        },
        {
          "type": "null"
        }
      ],
      "description": "Safe structured error when ok is false."
    }
  },
  "description": "Google MCP normalized operation envelope.",
  "additionalProperties": false
}

Code Examples

cURL

curl -X POST 'https://portal.madpanda3d.com/api/mcp' \
  -H 'Authorization: Bearer mad_live_***' \
  -H 'Content-Type: application/json' \
  -d '{
  "jsonrpc": "2.0",
  "id": "google-gmail-batch-get-metadata-example",
  "method": "tools/call",
  "params": {
    "name": "google.gmail_batch_get_metadata",
    "arguments": {
      "message_ids": [],
      "metadata_headers": ""
    }
  }
}'

Node.js

const response = await fetch('https://portal.madpanda3d.com/api/mcp', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer mad_live_***',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "id": "google-gmail-batch-get-metadata-example",
  "method": "tools/call",
  "params": {
    "name": "google.gmail_batch_get_metadata",
    "arguments": {
      "message_ids": [],
      "metadata_headers": ""
    }
  }
}),
});
const data = await response.json();
console.log(data);

Python

import requests

url = 'https://portal.madpanda3d.com/api/mcp'
headers = {
    'Authorization': 'Bearer mad_live_***',
    'Content-Type': 'application/json',
}
payload = {
  "jsonrpc": "2.0",
  "id": "google-gmail-batch-get-metadata-example",
  "method": "tools/call",
  "params": {
    "name": "google.gmail_batch_get_metadata",
    "arguments": {
      "message_ids": [],
      "metadata_headers": ""
    }
  }
}
response = requests.post(url, headers=headers, json=payload, timeout=60)
print(response.json())

Example Responses

200 Success

{
  "ok": true,
  "message": "Tool google.gmail_batch_get_metadata executed successfully.",
  "note": "Response shape varies by MCP tool. Inspect live responses for exact fields."
}

502 Upstream Error

{
  "ok": false,
  "classification": "upstream_http_error",
  "message": "Upstream MCP returned a non-success status."
}