PaperAgent MCP

An official MCP server provided by PaperAgent that allows AI agents to draft, preview, and send physical USPS letters. It supports an approve-then-pay workflow, handling PDF generation, cost estimation, Stripe payment processing, and mailing services for US addresses.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

No sign-inEndpoint checked 2026-10-26Operated by PaperAgent

MCP endpoint (Streamable HTTP)

https://paperagent.dev/mcp

Vendor documentation

What you can do with it

Mail a gym membership cancellation letter
Send a landlord repair request
Mail a complaint and refund request
Request a security deposit return

Tools advertised by the last live check:

get_pricing
validate_address
create_draft
update_draft
preview_draft
send_letter
get_letter_status
list_letters

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 paperagent-mcp https://paperagent.dev/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 paperagent-mcp --url https://paperagent.dev/mcp

Cursor

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

Cursor configuration

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

VS Code

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

VS Code configuration

{
  "servers": {
    "paperagent-mcp": {
      "type": "http",
      "url": "https://paperagent.dev/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 paperagent-mcp https://paperagent.dev/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": {
    "paperagent-mcp": {
      "url": "https://paperagent.dev/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": {
    "paperagent-mcp": {
      "serverUrl": "https://paperagent.dev/mcp"
    }
  }
}

Let your agent find its tools

Find servers like PaperAgent MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

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