Grantd MCP

Grantd is an open-source, MCP-native OAuth token broker that allows AI agents to securely act on a user's behalf across third-party APIs like Gmail, Slack, and GitHub. It vaults tokens server-side using AES-256-GCM encryption, ensuring raw tokens never reach the LLM. The server exposes tools such as list_providers, check_connection, create_connect_link, and call_provider to manage authentication flows and API calls.

Package and access

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

Community listingLocal stdioSource reviewed; not executedPublished by rafavecchi

Vendor documentation

What you can do with it

Let AI agents act on user behalf across third-party APIs
Securely vault OAuth tokens server-side
Manage OAuth connections for Gmail, Slack, GitHub

Source and maintenance

Community listingRegistry 0.1.0

mcp-registry: io.github.rafavecchi/grantd@0.1.0 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

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

grantd-mcp 0.1.0

npm

grantd-mcp package definition

{
  "version": "0.1.0",
  "transport": "stdio",
  "identifier": "grantd-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "GRANTD_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "A Grantd secret key (sk_...). Treat it like a password."
    },
    {
      "name": "GRANTD_BASE_URL",
      "format": "string",
      "description": "Base URL of your Grantd broker (default http://localhost:8787)."
    },
    {
      "name": "GRANTD_END_USER",
      "format": "string",
      "description": "Default end-user id so tools don't need it passed each call."
    }
  ]
}

Tools

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No tool definitions available.

Connect from your client

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "grantd-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grantd-mcp@0.1.0"
      ],
      "env": {
        "GRANTD_API_KEY": "<YOUR_GRANTD_API_KEY>",
        "GRANTD_BASE_URL": "<YOUR_GRANTD_BASE_URL>",
        "GRANTD_END_USER": "<YOUR_GRANTD_END_USER>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "grantd-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grantd-mcp@0.1.0"
      ],
      "env": {
        "GRANTD_API_KEY": "<YOUR_GRANTD_API_KEY>",
        "GRANTD_BASE_URL": "<YOUR_GRANTD_BASE_URL>",
        "GRANTD_END_USER": "<YOUR_GRANTD_END_USER>"
      }
    }
  }
}

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": {
    "grantd-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "grantd-mcp@0.1.0"
      ],
      "env": {
        "GRANTD_API_KEY": "<YOUR_GRANTD_API_KEY>",
        "GRANTD_BASE_URL": "<YOUR_GRANTD_BASE_URL>",
        "GRANTD_END_USER": "<YOUR_GRANTD_END_USER>"
      }
    }
  }
}

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": {
    "grantd-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grantd-mcp@0.1.0"
      ],
      "env": {
        "GRANTD_API_KEY": "<YOUR_GRANTD_API_KEY>",
        "GRANTD_BASE_URL": "<YOUR_GRANTD_BASE_URL>",
        "GRANTD_END_USER": "<YOUR_GRANTD_END_USER>"
      }
    }
  }
}

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