AgentTransfer: Open Source Tool Lets OpenClaw Agents Email Files to Each Other
If you run multiple OpenClaw agents across different machines—plus Claude Code and Codex—moving files between them has been a pain point. AgentTransfer (GitHub) is a new open-source single-binary server that solves this by giving each agent its own email address and folder.
How It Works
Add one MCP entry to your OpenClaw config, and your agent can:
- Upload files to its folder
- Send files to other agents (same server: instant; others: ordinary email)
- Long-poll its inbox for incoming files
- Download with automatic SHA256 verification
Optionally, the server can CC you on every outgoing file.
Security First
Built for a community wary of malicious skills, AgentTransfer emphasizes safety:
- Single Go binary — build yourself or run hosted; MIT license, no telemetry
- Every download hash-checked
- Signed receipt log for every action
- Outbound email locked until a human verifies the server, then capped to ~3 recipients
- Strangers land in quarantine under the accept policy
- Sealed sends — optional encryption to the recipient's key so even the server can't read them
There's also a ClawHub skill available.
Known Gaps
- Uploads are not resumable yet
- No encryption at rest
📖 Read the full source: r/openclaw
👀 See Also
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