Grantor MCP

A local MCP permission broker that replaces full credential sharing with bounded, revocable capabilities. It allows agents to grant, delegate, check, and revoke access to tools with on-chain verification, use budgets, and time-to-live limits, ensuring sub-agents can only perform narrowly scoped actions.

Visit Grantor

Package and access

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

Vendor evidenceLocal stdioSource reviewed; not executedOperated by Grantor

Vendor documentation

What you can do with it

Grant sub-agents bounded tool access with specific use limits and expiration times
Delegate narrower capabilities to worker agents while enforcing cryptographic narrowing
Check tool authorization against live on-chain revocation epochs and tenant billing status
Wrap existing stdio MCP servers to enforce permission boundaries without code changes

Source and maintenance

Vendor evidenceRegistry 0.2.0

mcp-registry: com.chaingrantor/grantor-mcp@0.2.0 Project website

Packages and installation

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

@grantor/mcp 0.2.0

npmnpx

@grantor/mcp package definition

{
  "version": "0.2.0",
  "transport": "stdio",
  "identifier": "@grantor/mcp",
  "runtimeHint": "npx",
  "registryType": "npm"
}

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": {
    "grantor-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@grantor/mcp@0.2.0"
      ]
    }
  }
}

Cline

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

Cline configuration

{
  "mcpServers": {
    "grantor-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@grantor/mcp@0.2.0"
      ]
    }
  }
}

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": {
    "grantor-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@grantor/mcp@0.2.0"
      ]
    }
  }
}

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": {
    "grantor-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@grantor/mcp@0.2.0"
      ]
    }
  }
}

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