Concordance is a Model Context Protocol (MCP) server: Deterministic claim verification with receipts across ~60 domains. No model in the loop. In practice that means any MCP-compatible AI assistant can call Concordance's tools directly — the model decides when to use them in a conversation or agent run.
It's a hosted (remote) server — point your client at https://narrowhighway.com/mcp and you're connected, with nothing to install locally. The current release is v2.0.0, published under the AGPL-3.0 license, with source at matharrismma/concordance-2 on GitHub.
Concordance is listed under AI & Agents on mcp.site and works with any MCP client — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and the rest of the ecosystem — using the install snippets below. If you maintain Concordance for narrowhighway.com, claim this listing to verify ownership, earn the Verified badge, and keep the details current.
