Premier Letters MCP MCP server

This official MCP server allows AI agents to interact with Premier Letters' physical mail service. It enables users to get pricing quotes, list handwriting styles, verify addresses, preview handwritten letters as SVGs, and create and pay for real pen-written letters mailed via USPS. It supports stateless Streamable HTTP connections for integration with Claude, ChatGPT, and other MCP-compatible agents.

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 Premier Letters

MCP endpoint (Streamable HTTP)

https://www.premierletters.com/api/mcp

Vendor documentation

What you can do with it

Get a live price quote for a handwritten letter or postcard
Verify and standardize a US mailing address via USPS
Preview a handwritten letter as an SVG image before ordering
Create and pay for a real pen-written letter mailed via USPS

Tools advertised by the last live check:

get_pricing
list_handwriting_styles
list_templates
verify_address
preview_letter
create_order
get_order_status
list_orders

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 premier-letters-mcp https://www.premierletters.com/api/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 premier-letters-mcp --url https://www.premierletters.com/api/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "premier-letters-mcp": {
      "url": "https://www.premierletters.com/api/mcp"
    }
  }
}

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": {
    "premier-letters-mcp": {
      "type": "streamableHttp",
      "url": "https://www.premierletters.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "premier-letters-mcp": {
      "type": "http",
      "url": "https://www.premierletters.com/api/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 premier-letters-mcp https://www.premierletters.com/api/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": {
    "premier-letters-mcp": {
      "url": "https://www.premierletters.com/api/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": {
    "premier-letters-mcp": {
      "serverUrl": "https://www.premierletters.com/api/mcp"
    }
  }
}

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