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Proofsource

Official registry Marketing and sales

AI visibility: which buyer questions name your brand in ChatGPT, Perplexity, Claude, AI Overviews.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http proofsource 'https://app.proofsource.co/v1/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "proofsource": {
            "type": "http",
            "url": "https://app.proofsource.co/v1/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Proofsource for Claude
  2. Install
  3. Connect without the plugin
  4. Tools

Proofsource for Claude

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:

  • ai-visibility-audit: a sourced summary of your AI visibility, competitors, cited sources and recent changes.
  • fix-plan: a prioritized plan from your open gaps, plus tracking new buyer questions and shipped fixes (always asks first).

Install

/plugin marketplace add lcbasu/proofsource-plugins
/plugin install proofsource@proofsource-plugins

Then run /mcp, pick proofsource and sign in with your Proofsource account. Try: "Is my brand mentioned in ChatGPT answers?"

Connect without the plugin

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

Tools

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

Frequently asked questions

What is Proofsource?

AI visibility: which buyer questions name your brand in ChatGPT, Perplexity, Claude, AI Overviews.

How do I install Proofsource?

It runs as a remote server. In Claude Code: claude mcp add --transport http proofsource 'https://app.proofsource.co/v1/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Proofsource need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Proofsource open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Proofsource?

It is published by lcbasu. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.