collimer-mcp
Let any AI agent run a free AI-search visibility scan on any website — how visible a brand is in ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews.
Trackers tell you you're invisible. Collimer tells you why, and what to fix.
It exposes one tool, collimer_scan, which returns a depth-gated teaser: an AI-visibility score (0–100), a confidence interval, the single biggest gap, and a branded report URL. The full report — share of voice across every engine + every recommendation — unlocks with a free account at collimer.com.
Install
Add Collimer to any MCP client. It runs on-demand via npx — no install step.
Claude Desktop / Claude Code — add to your MCP config (claude_desktop_config.json, or .mcp.json in your project):
{
"mcpServers": {
"collimer": {
"command": "npx",
"args": ["-y", "collimer-mcp"]
}
}
}
Cursor / Windsurf / VS Code — same block, in the editor's MCP settings (~/.cursor/mcp.json, Windsurf MCP settings, or .vscode/mcp.json).
Then ask your assistant:
"How visible is stripe.com in AI search?" "Run a Collimer scan on example.com and tell me the biggest AI-visibility gap." "Does ChatGPT cite acme.com when asked about its category?"
Your assistant will call collimer_scan and return the teaser.
The tool
collimer_scan(domain, email?)
| Arg | ||
|---|---|---|
domain | required | The website to scan — example.com or https://example.com. |
email | optional | Emails the report and speeds claiming the account later. |
Returns the teaser — score, confidence interval, top gap, report URL, and an unlock link. It never returns the full report; that's gated behind a free account.
Configuration (env)
| Var | Default | Purpose |
|---|---|---|
COLLIMER_API_BASE | https://app.collimer.com | API base URL |
COLLIMER_SCAN_SOURCE | mcp | Funnel-attribution channel (set per distribution) |
COLLIMER_MAX_POLLS | 60 | Max poll attempts |
COLLIMER_POLL_INTERVAL_MS | 5000 | Poll interval |
COLLIMER_REQUEST_TIMEOUT_MS | 30000 | Per-request timeout |
What is Collimer?
Collimer measures and improves how often AI answer engines cite your brand — generative engine optimization (GEO), the AI-search successor to SEO. This MCP server is the free front door: scan any site from inside your assistant, see the score and the biggest gap, then open the full report and start tracking at collimer.com. API docs: app.collimer.com/docs.
Privacy
The server calls Collimer's public scan API for the domain you pass and returns the result. It doesn't read your files or your conversation. Scans carry a source tag (default mcp) so we can see which channels are useful — no personal data beyond the optional email you provide.
Develop
npm install
npm run build # → dist/
npm run smoke # real scan against prod, prints the teaser
npm run test:protocol # spawns the server + calls the tool over MCP/stdio
License
MIT © Sandcastle Labs