FrankKi MCP MCP server

A hosted MCP server that enables AI agents to draft, price, approve, and send real physical letters worldwide. It integrates with postal networks to handle printing, franking, and delivery tracking while enforcing human-in-the-loop approval and spending caps.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by FrankKi

MCP endpoint (Streamable HTTP)

https://mcp.frankki.app

Vendor documentation

What you can do with it

Draft and format DIN 5008 compliant letters
Get exact shipping quotes for worldwide delivery
Submit letters for human approval before printing
Track physical mail status from print to delivery

Tools advertised by the last live check:

mcp_health
address_validate
shipping_quote
pricing_tiers

Connect from your client

Each snippet registers the same endpoint; pick the client you 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.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http frankki-mcp https://mcp.frankki.app

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add frankki-mcp --url https://mcp.frankki.app

Cursor

Merge this server into .cursor/mcp.json in your project, then enable frankki-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "frankki-mcp": {
      "url": "https://mcp.frankki.app"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "frankki-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.frankki.app",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start frankki-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "frankki-mcp": {
      "type": "http",
      "url": "https://mcp.frankki.app"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http frankki-mcp https://mcp.frankki.app

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "frankki-mcp": {
      "url": "https://mcp.frankki.app"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "frankki-mcp": {
      "serverUrl": "https://mcp.frankki.app"
    }
  }
}

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