Fax for Agents is a fax API, a hosted MCP server with 15 tools and SDKs for Python and TypeScript, built so AI agents can send and receive faxes. Every send is quoted first. A send can wait for a human approval or run under a delegated policy an administrator wrote, and each job ends with the carrier's delivery evidence. Received faxes land in an inbox with OCR and schema extraction, and text read from a fax is marked as data, never as instructions. Prices: $0.039 per page sent, $0.019 per page received, $2 per number per month, $19 per month for a workspace. Sandbox keys are free.