Koskamo

Cachet MCP

Cachet is an official MCP server by Taraxe that enables AI agents to send real physical mail in France. It supports drafting, validating, and sending simple, tracked, or registered letters with acknowledgment of receipt. The service handles printing, postage via La Poste, and provides tracking details back to the agent, bridging the gap between digital AI actions and physical postal requirements.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

Cachet MCP logo, by TaraxeVendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-10-26Operated by Taraxe
MCP endpoint (Streamable HTTP)
https://www.taraxe.com/cachet/mcp
Vendor documentation

What you can do with it

  • Send a registered letter to cancel a gym membership
  • Draft and mail a formal notice of default
  • Send a reminder letter for an unpaid invoice
  • Verify and format a French postal address

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: io.github.taraxe/cachet@1.0.0Project website

Tools

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

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · registry · passed · metadata changed · Source metadata updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

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 the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http cachet-mcp https://www.taraxe.com/cachet/mcp

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 cachet-mcp --url https://www.taraxe.com/cachet/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cachet-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "cachet-mcp": {
      "url": "https://www.taraxe.com/cachet/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "cachet-mcp": {
      "type": "streamableHttp",
      "url": "https://www.taraxe.com/cachet/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cachet-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "cachet-mcp": {
      "type": "http",
      "url": "https://www.taraxe.com/cachet/mcp"
    }
  }
}

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 cachet-mcp https://www.taraxe.com/cachet/mcp

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": {
    "cachet-mcp": {
      "url": "https://www.taraxe.com/cachet/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "cachet-mcp": {
      "serverUrl": "https://www.taraxe.com/cachet/mcp"
    }
  }
}

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Do you run Cachet MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

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