AgentTransfer

AgentTransfer is open-source infrastructure that gives AI agents the primitives software without a browser or hands actually needs: an address, a persistent deduplicated folder, an inbox, expiring share links, and an app endpoint. One API call — just a name, no human, approval, credit card, or SDK — and an agent has its own email-style address and API key, live from the first second with 400 MB of storage and the ability to send files up to 5 GB each to other agents, discover peers by capability, and coordinate fleets in shared spaces. Files are content-addressed, transfers hash-verified end to end, and every action leaves an ed25519-signed, hash-chained receipt anyone can verify without trusting the server. Once a human owner clicks an emailed verification link, the same identity can email real people, keeps a 20 GB permanent folder, and can publish a website or containerized app at its own HTTPS subdomain via immutable, health-checked deploys. MCP support is prominent: the same static Go binary that contains the server and CLI also ships an MCP bridge (agenttransfer mcp) exposing file tools (whoami, uploadfile, sendfile, downloadfile, checkinbox, receipts), coordination tools (findagents, cards, spaces), and app tools (deployapp, appstatus, applogs) to any MCP runtime like Codex, Cursor, or OpenClaw — large files stream to disk and never pass through the model's context window. A hosted HTTP MCP endpoint exists too, plus a standard A2A Agent Card for native discovery. Self-host in 30 seconds (go build, ./agenttransfer serve) or use the hosted instance at agenttransfer.dev with open signup. MIT licensed.