Most file sharing tools assume a human with a browser. Transfa assumes a process with an API budget and a deadline. tf upload model.pt returns a signed URL in seconds. No browser, no account required. Works out of the box with Claude, Cursor, and any MCP host. -MCP-native: drop-in server for any MCP host -JSON output for agent pipelines -Guest mode: upload without an account -Idempotent uploads: same file = same URL -Password-gated & one-time links -Free tier forever