Proof is a Model Context Protocol (MCP) server: Stamp content with permanent, verifiable provenance. Hash locally, verify free forever. As an MCP server it plugs straight into AI assistants, exposing its functionality as tools the model can invoke on your behalf.
It's a hosted (remote) server — point your client at https://proof.tatastu.dev/mcp and you're connected, with nothing to install locally. The current release is v1.0.0, published under the MIT license, with source at Tatastu-Labs/proof on GitHub.
You'll find Proof in the Development category here on mcp.site; it connects to Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and any other MCP client — see the install snippets below. If you maintain Proof for tatastu.dev, claim this listing to verify ownership, earn the Verified badge, and keep the details current.