Proofsource

npx add-mcp 'https://app.proofsource.co/v1/mcp'

Proofsource is now in ChatGPT and Claude.

Ask your AI assistant how AI answers see your brand, and get the answer with proof.

The answer comes back as a card.

Mention rate, each engine, the competitors named in the same answers, and a link to every answer behind the number.

• Before you sign in, ask for the example and see Tesla's card.
• After you sign in, ask about your own brands.

Tesla in AI answers Recorded 4 to 5 Oct 2026Example

48% of 232 buyer answers name Tesla

By engine

ChatGPT59%

Google AI Overviews59%

Claude41%

Perplexity34%

Competitors named in the same answers

Ford15%

Rivian11%

SunPower11%

Open in Proofsource

Ask it like you would ask a colleague.

• How visible is my brand in AI answers this week?
• Who does ChatGPT recommend instead of us?
• Which sources do AI answers cite for your topic?
• Did the fix we shipped last week work?
• Add a buyer question about your product
• Give me the share link to this month's report

Connect where you work.

ChatGPT and Claude sign you in with Proofsource. No key to copy.

1. In ChatGPT, go to Plugins, select +, then Add custom MCP server.
2. Name it Proofsource and paste the server URL https://app.proofsource.co/v1/mcp.
3. Set Authentication to OAuth, accept the warning, and select Create as a plugin.
4. Install it from your personal plugins, sign in to Proofsource and select Allow. If you belong to more than one workspace, pick one first.
5. In a chat, type @ and pick Proofsource, then ask.

https://app.proofsource.co/v1/mcp

Sign in with your work email and a 6-digit code, or with Google. Already signed in to Proofsource in this browser? You just select Allow.

What it can do

Reading needs read access. The three tools that change data need write access, which you grant when you connect.

Reads see_example

Shows the Tesla example card, with no sign-in.

Reads list_brands

Lists the brands your workspace tracks.

Reads list_topics

Lists your topics and the buyer questions under each.

Reads get_visibility

How often AI answers mention you, by engine or by question, as a card.

Reads get_competitors

Which competitors AI answers name, and how often against you.

Reads get_citations

The sources AI answers cite, and where your own pages rank.

Reads get_changes

What moved: your trend, answers that changed, new sources, competitor site changes.

Reads list_fix_opportunities

What keeps engines from naming you, and the fix for each.

Reads get_fix_verification

Each shipped fix's before and after, and whether it worked.

Reads get_scan_status

How far a running scan has got.

Changes data add_brand

Adds a brand from its website or link and starts its scans.

Changes data create_prompt

Tracks a new buyer question.

Changes data mark_fix_shipped

Dates a fix you shipped so Proofsource can check whether it worked.

New here

Sign in with your work email and Proofsource creates your account with 2 free scans. A personal address gets an account too; scans start once you add a work email.

Already a customer

Signed in on this browser? Connecting is one click. You see the brands in the workspace you pick, with the role you already have.

What is shared

When you connect, OpenAI (ChatGPT) or Anthropic (Claude) receives what each tool returns: brand names, visibility numbers, competitors, cited sources and answer excerpts. Never your sign-in code. Disconnect any time in Settings → AI agents.

The shortlist is being written right now.

See whether AI names your brand, who it names instead, and what to fix.

**200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free.**Google AI Overviews Google AI Mode