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Canaryusers MCP Server

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Canaryusers is listed as active in the registry but did not answer our last check. It exposes 3 tools. Last commit 13 Jun 2026.

A flock of AI users tests your deployed app and reports where real people get stuck, with fixes.

Uptime history 91 days of history · worst day 0%
91 days agonow
0.0%
Uptime 24h
0 of 92 checks
3
Tools
read from the server
93 ms
Response time
average over 24h
0
Stars
last commit 13 Jun 2026

Canaryusers does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

run in your terminal
claude mcp add canaryusers --transport http https://www.canaryusers.ai/api/mcp
Settings → Connectors → Add custom connector, then paste this address
https://www.canaryusers.ai/api/mcp
~/.codex/config.toml
[mcp_servers.canaryusers]
url = "https://www.canaryusers.ai/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "canaryusers": {
      "url": "https://www.canaryusers.ai/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "canaryusers": {
      "type": "http",
      "url": "https://www.canaryusers.ai/api/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

canary
canary_scan
Run a CanaryUsers UX scan on a DEPLOYED URL (your live or preview app — not source code). A flock of AI personas evaluates the page and reports where real users would get stuck, with concrete fixes. Returns AI-ready findings you can act on immediately. Use depth='deep' for the thorough scan that renders the page, checks it VISUALLY on desktop + mobile (catches mobile breakage and layout issues), and clicks through key flows like signup/checkout (slower, ~60-90s, uses one credit); depth='quick' (default) is a fast static check that does NOT see mobile or visual issues — use 'deep' when the user mentions mobile, layout, or visual problems. IMPORTANT: if this returns status 'running' with a scanId, the findings are not ready yet — wait ~30s, then call get_report_markdown(scanId), repeating until it returns the report. Always fetch and present the findings before stopping, then offer to fix the top issues.
recent
list_recent_scans
List the most recent CanaryUsers UX scans for your account (id, URL, CanaryScore, grade, status, date). Use this to find a scan to dig into.
report
get_report_markdown
Get one scan's full report as AI-ready markdown: the findings ranked by severity, why each matters, and how to fix it. Pass a scanId from list_recent_scans.

Endpoints

URLTransportStateLatencyChecked
https://www.canaryusers.ai/api/mcp streamable-http answering 93 ms 0 min ago

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Canaryusers — questions

Answers built from our own checks of this server.

What can Canaryusers do?
It exposes 3 tools, read directly from the server on our last check. Among them: canary_scan, get_report_markdown, list_recent_scans. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Canaryusers working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 93 ms. The bar chart above shows every period we have measured.
The registry lists Canaryusers as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Canaryusers?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Canaryusers need an API key?
No. Canaryusers completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
Is Canaryusers open source?
The code is open source: it is published under the MIT licence, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at canaryusers.ai, which runs on its operator's own terms.