Server data from the Official MCP Registry
Free AI-search visibility scan for any website — score, top findings, ranked-fix-plan upgrade.
About
Free AI-search visibility scan for any website — score, top findings, ranked-fix-plan upgrade.
Security Report
Valid MCP server (3 strong, 3 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
6 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-sandcastlelabs-collimer-mcp": {
"args": [
"-y",
"collimer-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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 ranked fix plan and verification re-scan unlock 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. The full ranked fix plan and verification re-scan are never returned; they unlock with 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 get your ranked fix plan 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
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