Koskamo

Google Chat MCP

An MCP server for the Google Chat API that allows AI agents to search spaces, read and send messages, manage threads, handle emoji reactions, read attachment metadata, and manage memberships. It acts as the signed-in user, sending messages under their name and respecting API limits regarding edits and deletions.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Google Chat MCP logo, by A1-x-TechCommunity listingLocal stdioSource reviewed; not executedPublished by A1-x-Tech
You need:You need Node.js 20+ and a Google account with access to Google Chat.Credentials are not required at install time — the server connects from the conversation.
Vendor documentation

What you can do with it

  • Search for specific spaces or direct messages
  • Read and summarize messages in a team space
  • Reply in a specific thread with confirmation
  • Manage emoji reactions on messages

Source and maintenance

Community listingRegistry 1.1.1
mcp-registry: io.github.A1-x-Tech/mcp-google-chat@1.1.1Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

mcp-google-chat 1.1.1

npm
mcp-google-chat package definition
{
  "version": "1.1.1",
  "transport": "stdio",
  "identifier": "mcp-google-chat",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "environmentVariables": [
    {
      "name": "GOOGLE_CHAT_CLIENT_ID",
      "description": "Google OAuth2 client id (refresh-token flow)."
    },
    {
      "name": "GOOGLE_CHAT_CLIENT_SECRET",
      "description": "Google OAuth2 client secret (refresh-token flow). Treat it as a secret."
    },
    {
      "name": "GOOGLE_CHAT_REFRESH_TOKEN",
      "description": "Google OAuth2 refresh token, exchanged for access tokens automatically. Treat it as a secret."
    },
    {
      "name": "GOOGLE_CHAT_ACCESS_TOKEN",
      "description": "Static OAuth2 access token (~1h lifetime) — alternative to the refresh-token trio, e.g. a service-account (Chat app) token or for testing."
    },
    {
      "name": "GOOGLE_CHAT_OAUTH_PORT",
      "description": "Fixed port for the loopback listener of the in-chat login (127.0.0.1 + PKCE). Set it when the client runs over SSH port forwarding; otherwise a free port is picked per login."
    },
    {
      "name": "GOOGLE_CHAT_API_BASE",
      "default": "https://chat.googleapis.com",
      "description": "API root override."
    },
    {
      "name": "GOOGLE_CHAT_TIMEOUT_MS",
      "default": "60000",
      "description": "Per-request timeout in milliseconds."
    },
    {
      "name": "GOOGLE_CHAT_MAX_RETRIES",
      "default": "3",
      "description": "Retries on transient errors (429 always; 5xx/network for reads)."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "google-chat-mcp-mcp-google-chat": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-chat@1.1.1"
      ],
      "env": {
        "GOOGLE_CHAT_CLIENT_ID": "<YOUR_GOOGLE_CHAT_CLIENT_ID>",
        "GOOGLE_CHAT_CLIENT_SECRET": "<YOUR_GOOGLE_CHAT_CLIENT_SECRET>",
        "GOOGLE_CHAT_REFRESH_TOKEN": "<YOUR_GOOGLE_CHAT_REFRESH_TOKEN>",
        "GOOGLE_CHAT_ACCESS_TOKEN": "<YOUR_GOOGLE_CHAT_ACCESS_TOKEN>",
        "GOOGLE_CHAT_OAUTH_PORT": "<YOUR_GOOGLE_CHAT_OAUTH_PORT>",
        "GOOGLE_CHAT_API_BASE": "<YOUR_GOOGLE_CHAT_API_BASE>",
        "GOOGLE_CHAT_TIMEOUT_MS": "<YOUR_GOOGLE_CHAT_TIMEOUT_MS>",
        "GOOGLE_CHAT_MAX_RETRIES": "<YOUR_GOOGLE_CHAT_MAX_RETRIES>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "google-chat-mcp-mcp-google-chat": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-chat@1.1.1"
      ],
      "env": {
        "GOOGLE_CHAT_CLIENT_ID": "<YOUR_GOOGLE_CHAT_CLIENT_ID>",
        "GOOGLE_CHAT_CLIENT_SECRET": "<YOUR_GOOGLE_CHAT_CLIENT_SECRET>",
        "GOOGLE_CHAT_REFRESH_TOKEN": "<YOUR_GOOGLE_CHAT_REFRESH_TOKEN>",
        "GOOGLE_CHAT_ACCESS_TOKEN": "<YOUR_GOOGLE_CHAT_ACCESS_TOKEN>",
        "GOOGLE_CHAT_OAUTH_PORT": "<YOUR_GOOGLE_CHAT_OAUTH_PORT>",
        "GOOGLE_CHAT_API_BASE": "<YOUR_GOOGLE_CHAT_API_BASE>",
        "GOOGLE_CHAT_TIMEOUT_MS": "<YOUR_GOOGLE_CHAT_TIMEOUT_MS>",
        "GOOGLE_CHAT_MAX_RETRIES": "<YOUR_GOOGLE_CHAT_MAX_RETRIES>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "google-chat-mcp-mcp-google-chat": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-chat@1.1.1"
      ],
      "env": {
        "GOOGLE_CHAT_CLIENT_ID": "<YOUR_GOOGLE_CHAT_CLIENT_ID>",
        "GOOGLE_CHAT_CLIENT_SECRET": "<YOUR_GOOGLE_CHAT_CLIENT_SECRET>",
        "GOOGLE_CHAT_REFRESH_TOKEN": "<YOUR_GOOGLE_CHAT_REFRESH_TOKEN>",
        "GOOGLE_CHAT_ACCESS_TOKEN": "<YOUR_GOOGLE_CHAT_ACCESS_TOKEN>",
        "GOOGLE_CHAT_OAUTH_PORT": "<YOUR_GOOGLE_CHAT_OAUTH_PORT>",
        "GOOGLE_CHAT_API_BASE": "<YOUR_GOOGLE_CHAT_API_BASE>",
        "GOOGLE_CHAT_TIMEOUT_MS": "<YOUR_GOOGLE_CHAT_TIMEOUT_MS>",
        "GOOGLE_CHAT_MAX_RETRIES": "<YOUR_GOOGLE_CHAT_MAX_RETRIES>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "google-chat-mcp-mcp-google-chat": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-chat@1.1.1"
      ],
      "env": {
        "GOOGLE_CHAT_CLIENT_ID": "<YOUR_GOOGLE_CHAT_CLIENT_ID>",
        "GOOGLE_CHAT_CLIENT_SECRET": "<YOUR_GOOGLE_CHAT_CLIENT_SECRET>",
        "GOOGLE_CHAT_REFRESH_TOKEN": "<YOUR_GOOGLE_CHAT_REFRESH_TOKEN>",
        "GOOGLE_CHAT_ACCESS_TOKEN": "<YOUR_GOOGLE_CHAT_ACCESS_TOKEN>",
        "GOOGLE_CHAT_OAUTH_PORT": "<YOUR_GOOGLE_CHAT_OAUTH_PORT>",
        "GOOGLE_CHAT_API_BASE": "<YOUR_GOOGLE_CHAT_API_BASE>",
        "GOOGLE_CHAT_TIMEOUT_MS": "<YOUR_GOOGLE_CHAT_TIMEOUT_MS>",
        "GOOGLE_CHAT_MAX_RETRIES": "<YOUR_GOOGLE_CHAT_MAX_RETRIES>"
      }
    }
  }
}

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