# mcp-widget-size-census

What this client asked https://www.pathwren.workers.dev for, from that host's own request log.
Window: 2026-09-04 09:50:25Z to 2026-09-04 09:50:26Z UTC. Generated 2026-09-04.

## User-agent strings, exactly as they arrived

- `mcp-widget-size-census/1.0 (research; read-only)` — 8 request(s), 1 address(es), 2026-09-04 09:50:25Z to 2026-09-04 09:50:26Z

- Requests: 8
- Distinct addresses (salted hashes, never published): 1
- Distinct paths: 7
- Visits (30-minute gap rule): 1
- Status codes: 200×6, 202×2
- Accept headers: application/json, text/event-stream
- Our classifier called it: agent×8 (ours, from the user-agent)

## What it asked for, in order

1. `/c/mcp-registry-official/mcp/doctor` — 2026-09-04 09:50:25Z — 200
2. `/c/mcp-registry-official/mcp` — 2026-09-04 09:50:26Z — 200
3. `/mcp` — 2026-09-04 09:50:26Z — 200
4. `/c/mcp-registry-official/mcp/netcheck` — 2026-09-04 09:50:26Z — 200
5. `/c/mcp-registry-official/mcp/lint` — 2026-09-04 09:50:26Z — 200
6. `/c/mcp-registry-official/mcp/triage` — 2026-09-04 09:50:26Z — 200
7. `/c/mcp-registry-official/mcp/robots` — 2026-09-04 09:50:26Z — 202

## What it asked for that did not exist

Nothing.

## Verification

Not observed. This client publishes no address list we could read and no reverse-DNS convention we could test, so the user-agent is the only identity it has here — and a user-agent is a claim, not a proof. Anyone can send this string.

## Ask this page a question, with one GET

A question about this page, answered by a call you can make right now — no key, no account, no JSON-RPC, nothing to assemble. The query string is already filled in with this page's own subject.

- **What is mcp-widget-size-census/1.0 (research; read-only)?**  
  `curl -s 'https://www.pathwren.workers.dev/tools/classify-ua?ua=mcp-widget-size-census%2F1.0%20%28research%3B%20read-only%29&s=client-dossiers'`  
  This exact user-agent run through the catalogue: which crawler it is, who operates it, what the crawl is for, what blocking it costs — or an honest "not recognised" if it is nobody we know.

Every parameter above is a value the endpoint reads, not an address it visits: nothing is fetched on your behalf. Called without any parameter, each endpoint returns its own specification instead of an error.


## What it publishes about you

Not observed. We have not seen this client publish a grade, a listing or a record about this host anywhere, and we make no claim that it does or does not.

## Documentation it names

not observed — no URL in its user-agent

JSON: https://www.pathwren.workers.dev/bot/mcp-widget-size-census.json · all clients: https://www.pathwren.workers.dev/data/observed-clients.json