Proofsource MCP server

• add_brandFree

  Start measuring a brand: does ChatGPT, Perplexity, Claude or Google AI mention it, and who does AI recommend instead? Give the brand's website (or its app store, Google Maps, YouTube or Instagram link). Proofsource reads the site, picks the buyer questions, and starts the first scan across the AI engines. Reading the site takes 1-2 minutes; if it is still running, call again with the same link and it picks up the same run, never a second one. Returns the brand_id; then use get_scan_status.

• create_promptwrite actionFree

  Adds a buyer question to a topic so Proofsource asks it on every engine in the plan from the next run. Counts toward the plan's question limit. Calling again with the same text returns the existing question, never a duplicate.

• get_changesFree

  What moved over the window: the daily mention-rate trend, how much the engines' answers changed, notable changes on competitors' websites, and new pages about the category.

• get_citationsFree

  The websites AI answers cite for the brand's buyer questions, ranked by share of citations and by how many answers cite them, and where the brand's own site ranks.

• get_competitorsFree

  The competitors AI answers name for the brand's buyer questions, per engine, with each one's share of voice against the brand and how it changed over the window.

• get_fix_verificationFree

  Each fix marked shipped for the brand with its mention rate before and after and a verdict: moved (beyond normal answer churn), within_noise, or awaiting_samples. Fixes marked "Not a fix" are left out; auto-detected page changes carry source auto_detected.

• get_report_linkFree

  A link to the brand's AI visibility report to share with a team or client: how often AI answers mention the brand, which competitors they name instead, and which sources they cite. Returns the newest finished report's own unlisted link. Reports are built automatically after a brand's first scan.

• get_scan_statusFree

  Progress of a brand's first scan after add_brand: the stage, how many AI answers are in out of how many expected, per engine, and when it should finish. Once complete, use get_visibility for the results.

• get_visibilityFree

  How often ChatGPT, Perplexity, Claude and Google AI mention the brand when buyers ask about its category. by=engine (default): mention rate, share of voice, average position, citation share and sentiment per engine, with the change from the previous period. by=question: each buyer question's mention rate and rank.

• list_brandsFree

  The brands this Proofsource workspace tracks in AI answers, with ids and websites. Call first; every other tool takes a brand_id.

• list_fix_opportunitiesFree

  The gaps that keep AI engines from citing or recommending the brand, each with its evidence and the suggested fix. Gives the gap_id mark_fix_shipped needs.

• list_topicsFree

  The topics and buyer questions Proofsource asks ChatGPT, Perplexity, Claude and Google AI for a brand. Gives the topic_id create_prompt needs.

• mark_fix_shippedFree

  Records that a fix shipped, against a gap_id from list_fix_opportunities or a published content_draft_id, so get_fix_verification can measure whether it moved the brand's mention rate. Calling again with the same fix and description returns the existing record.

• see_exampleFree

  Shows what Proofsource measures, without signing in: a real visibility card for one example brand (Tesla), from answers Proofsource collected from ChatGPT, Perplexity, Claude and Google AI Overviews. It shows how often AI answers mention the brand, per engine, which competitors they name instead, and sample answers. Use it when someone asks whether their brand shows up in AI answers and has not signed in. It always shows the example brand; to check their own brand they sign in.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 379ms20/20
• Tool poisoning14 tool descriptions checked15/15
• Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
• Maintenancelast push 1 days ago15/15
• Maintainer identityendpoint served from the registry-verified namespace domain8/10

Safety score

81/100

higher than 67% of 3,472 Web search servers

Tools

14

the typical Web search server has 5

Tools that change things

7%

typical: 0%. Fewer write tools means less an agent can break

Uptime

100%

of our recent checks; the typical remote Web search server answers 100%

Response time

94 ms

faster than 88% of 2,237 Web search servers

Proofsource: common questions

Is Proofsource MCP server safe?

Mostly: it is graded B (81/100). Read the Proofsource safety report

How do I install Proofsource?

It runs remotely at app.proofsource.co. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Proofsource need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is Proofsource maintained?

The last commit was 20 days ago (2026-10-13). The latest release is v1.0.0.

Is Proofsource up?

100% of our last 28 checks got an answer. We check remote servers about four times a day.

What can I use instead of Proofsource?

Servers from other publishers that do the same job: Perplexity API Platform (moved to ai.perplexity/mcp-server), Perplexity API Platform MCP server and Keyline Icons MCP server.

How does Proofsource compare with other Web search MCP servers?

safety score 81/100 (higher than 67% of 3,472 Web search servers); tools 14 (the typical Web search server has 5); tools that change things 7% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.