Send a Fax with AI Agents and MCP
Mircea RilăSend a fax from Cursor, Claude, Codex, ChatGPT, or VS Code over MCP. Checkout for chat apps; Stripe MPP for Link CLI cards or Tempo USDC.
Update (September 2026): MCP, the REST API, and Stripe MPP are live. Install at /agents. REST and CLI: /developers. MPP vs Instant Checkout: Stripe Machine Payments Protocol. Do not send PHI on these surfaces.
The last mile is still fax
Large language models can draft a packet. Many courts, agencies, and clinics still want it on a fax line. MCP is the adapter: the client discovers tools, the user signs in with OAuth, and the agent calls create_fax_draft with the PDF as base64.
That is the chat path. Payment is hosted Checkout, or leftover subscription pages, not ChatGPT Instant Checkout, and not MPP, unless you add Stripe Link CLI or a Tempo wallet and hit the REST machine URL.
What to use
| Client | Protocol | Pay |
|---|---|---|
| Cursor, Claude, Codex, ChatGPT, VS Code | MCP + OAuth | Checkout or page pool |
| Your backend | REST + API key | Prepaid credits |
| Agent with a Link wallet | HTTP 402 MPP | Shared Payment Token (approve in the Link app) |
| Agent with Tempo Wallet, Privy, AgentCash, or Kite | HTTP 402 MPP | Tempo USDC.e on the same machine URL |
Details and one-click buttons: Send a fax from Cursor, Claude, or Codex.
Stripe MPP (HTTP 402, SPT or Tempo USDC, ACP comparison): Stripe MPP vs Instant Checkout.