Hi HN,

I've been using Claude Code (CLI) heavily, but I hit a major friction point: When Claude generates artifacts locally (like a specific SQLite dump, build logs, or a patch), it has no easy way to "hand" them to a coworker.

I didn't want to upload sensitive local files to a third-party cloud (S3/Drive) just to send a temporary file to a teammate sitting virtually next to me.

So, I built an MCP server (ffl-mcp) that gives Claude the capability to share files directly via P2P.

The Workflow:

1. I ask Claude: "Zip the logs and send them to Bob."

2. Claude uses the tool to generate a one-time P2P link.

3. My coworker clicks the link to download immediately (streaming transfer, E2EE).

Under the hood:

It wraps ffl [0], a CLI tool I built for NAT traversal (WebRTC, relay if failed). (I packaged the core tool as an "Actually Portable Executable" so it runs as a single binary across platforms without Python environment headaches).

It's open source and you can try it with uvx: https://github.com/nuwainfo/ffl-mcp

[0] The core ffl tool: https://github.com/nuwainfo/ffl

>> 1. I ask Claude: "Zip the logs and send them to Bob."

>> 2. Claude uses the tool to generate a one-time P2P link.

>> 3. My coworker clicks the link to download immediately

It is not clear how DOES the co-worker get the link?