The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Proofsource listing page.
Proofsource measures how AI assistants talk about your brand. It asks ChatGPT, Perplexity, Claude and Google AI Overviews the questions your buyers ask, and shows how often you are mentioned, which competitors are recommended instead, and which sources the answers cite.
This plugin connects Claude to your Proofsource workspace and adds two skills:
Then run /mcp, pick proofsource and sign in with your Proofsource account. Try: "Is my brand mentioned in ChatGPT answers?"
The connector URL is https://app.proofsource.co/v1/mcp (OAuth 2.1; you sign in with your Proofsource email and a one-time code).
Claude (web or Desktop): Settings → Connectors → Add custom connector → paste the URL → Connect.
ChatGPT: Settings → Apps & Connectors → Advanced → turn on Developer mode → Create → paste the URL, choose OAuth.
Claude Code: claude mcp add --scope user --transport http proofsource https://app.proofsource.co/v1/mcp, then /mcp to sign in.
Cursor, VS Code, Cline, Windsurf and other MCP clients: add a remote (Streamable HTTP) server with the URL above; see llms-install.md.
Also listed in the official MCP Registry as co.proofsource/proofsource (server.json).
Full guide: https://proofsource.co/docs/chatgpt-and-claude
Read: list_brands, list_topics, get_visibility, get_competitors, get_citations, get_changes, list_fix_opportunities, get_fix_verification, get_scan_status, get_report_link, see_example (works without signing in).
Write (your workspace only, by your plan and role): add_brand, create_prompt, mark_fix_shipped.
New accounts with a work email get two free scans. Personal email addresses get an account without scans.
Support: https://proofsource.co/contact · Privacy: https://proofsource.co/privacy · Terms: https://proofsource.co/terms