YAFL.dev

YAFL is a file handoff layer for AI agents and servers that lets a local agent encrypt a file and share a short link another agent can use to download and decrypt. It uses AES-256-GCM encryption on the client, expires links after 24 hours, and keeps the decryption key only in the URL fragment so servers never see plaintext. You can integrate via MCP or CLI with uploadfile, downloadfile, and status commands, get machine-readable errors, and manage per-agent API keys for fast revocation.