Source Claim Proof is a Model Context Protocol (MCP) server: Verify whether a supplied public source currently supports one atomic factual claim. Because it speaks the Model Context Protocol, AI assistants can use Source Claim Proof as a set of callable tools instead of you copy-pasting between apps.
It's a hosted (remote) server — point your client at https://source-claim-proof.mattskowronis.workers.dev/mcp and you're connected, with nothing to install locally. The current release is v1.0.0.
On mcp.site, Source Claim Proof sits in the Development category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain Source Claim Proof for source-claim-proof.mattskowronis, claim this listing to verify ownership, earn the Verified badge, and keep the details current.