# Vouch-Census

What this client asked https://www.pathwren.workers.dev for, from that host's own request log.
Window: 2026-09-10 18:23:15Z to 2026-09-10 18:24:12Z UTC. Generated 2026-09-11.

## User-agent strings, exactly as they arrived

- `Vouch-Census/0.1 (+mailto:probing@vouch.tools; read-only census probe; see https://vouch.tools/probing-standard)` — 43 request(s), 1 address(es), 2026-09-10 18:23:15Z to 2026-09-10 18:24:12Z

- Requests: 43
- Distinct addresses (salted hashes, never published): 1
- Distinct paths: 9
- Visits (30-minute gap rule): 1
- Status codes: 200×29, 404×7, 202×7
- Accept headers: application/json, text/event-stream, */*, text/event-stream
- Our classifier called it: agent×36, crawler×7 (ours, from the user-agent)

## What it asked for, in order

1. `/.well-known/mcp-probing.json` — 2026-09-10 18:23:15Z — 404
2. `/robots.txt` — 2026-09-10 18:23:15Z — 200
3. `/c/mcp-registry-official/mcp/doctor` — 2026-09-10 18:23:15Z — 200
4. `/c/mcp-registry-official/mcp` — 2026-09-10 18:23:23Z — 200
5. `/c/mcp-registry-official/mcp/netcheck` — 2026-09-10 18:23:25Z — 200
6. `/c/mcp-registry-official/mcp/triage` — 2026-09-10 18:23:27Z — 200
7. `/c/mcp-registry-official/mcp/markdown` — 2026-09-10 18:23:29Z — 200
8. `/c/mcp-registry-official/mcp/lint` — 2026-09-10 18:23:57Z — 200
9. `/c/mcp-registry-official/mcp/robots` — 2026-09-10 18:23:59Z — 200

## What it asked for that did not exist

- `/.well-known/mcp-probing.json` — 404×7 — first asked 2026-09-10 18:23:15Z; still absent

## 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 Vouch-Census/0.1 (+mailto:probing@vouch.tools…?**  
  `curl -s 'https://www.pathwren.workers.dev/tools/classify-ua?ua=Vouch-Census%2F0.1%20%28%2Bmailto%3Aprobing%40vouch.tools%3B%20read-only%20census%20probe%3B%20see%20https%3A%2F%2Fvouch.tools%2Fprobing-standard%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

https://vouch.tools/probing-standard

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