# Bun

What this client asked https://www.pathwren.workers.dev for, from that host's own request log.
Window: 2026-09-03 18:40:14Z to 2026-09-12 17:43:13Z UTC. Generated 2026-09-14.

## User-agent strings, exactly as they arrived

- `Bun/1.3.14` — 49 request(s), 2 address(es), 2026-09-03 18:40:14Z to 2026-09-04 18:39:56Z
- `Bun/1.3.10` — 29 request(s), 9 address(es), 2026-09-12 16:00:45Z to 2026-09-12 17:43:13Z

- Requests: 78
- Distinct addresses (salted hashes, never published): 11
- Distinct paths: 34
- Visits (30-minute gap rule): 6
- Status codes: 200×49, 404×28, 202×1
- Accept headers: application/json, text/event-stream, */*
- Our classifier called it: agent×78 (ours, from the user-agent)

## What it asked for, in order

1. `/c/mcp-registry-official/mcp/robots` — 2026-09-03 18:40:14Z — 200
2. `/c/mcp-registry-official/mcp/lint` — 2026-09-03 18:40:14Z — 200
3. `/c/mcp-registry-official/mcp/triage` — 2026-09-03 18:40:14Z — 200
4. `/c/mcp-registry-official/mcp/netcheck` — 2026-09-03 18:40:14Z — 200
5. `/c/mcp-registry-official/mcp/doctor` — 2026-09-03 18:40:14Z — 200
6. `/c/mcp-registry-official/mcp` — 2026-09-03 18:40:14Z — 200
7. `/.well-known/oauth-protected-resource` — 2026-09-04 18:39:55Z — 404
8. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/doctor` — 2026-09-04 18:39:55Z — 404
9. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/lint` — 2026-09-04 18:39:55Z — 404
10. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/netcheck` — 2026-09-04 18:39:55Z — 404
11. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/triage` — 2026-09-04 18:39:55Z — 404
12. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/robots` — 2026-09-04 18:39:55Z — 404
13. `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp` — 2026-09-04 18:39:55Z — 404
14. `/.well-known/oauth-authorization-server` — 2026-09-04 18:39:56Z — 404
15. `/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
16. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/netcheck` — 2026-09-04 18:39:56Z — 404
17. `/c/mcp-registry-official/mcp/doctor/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
18. `/.well-known/openid-configuration/c/mcp-registry-official/mcp/triage` — 2026-09-04 18:39:56Z — 404
19. `/.well-known/openid-configuration/c/mcp-registry-official/mcp/doctor` — 2026-09-04 18:39:56Z — 404
20. `/c/mcp-registry-official/mcp/lint/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
21. `/.well-known/openid-configuration/c/mcp-registry-official/mcp/netcheck` — 2026-09-04 18:39:56Z — 404
22. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/robots` — 2026-09-04 18:39:56Z — 404
23. `/c/mcp-registry-official/mcp/triage/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
24. `/.well-known/openid-configuration/c/mcp-registry-official/mcp/robots` — 2026-09-04 18:39:56Z — 404
25. `/.well-known/openid-configuration/c/mcp-registry-official/mcp/lint` — 2026-09-04 18:39:56Z — 404
26. `/c/mcp-registry-official/mcp/netcheck/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
27. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/lint` — 2026-09-04 18:39:56Z — 404
28. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/doctor` — 2026-09-04 18:39:56Z — 404
29. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/triage` — 2026-09-04 18:39:56Z — 404
30. `/c/mcp-registry-official/mcp/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
31. `/.well-known/openid-configuration/c/mcp-registry-official/mcp` — 2026-09-04 18:39:56Z — 404
32. `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp` — 2026-09-04 18:39:56Z — 404
33. `/c/mcp-registry-official/mcp/robots/.well-known/openid-configuration` — 2026-09-04 18:39:56Z — 404
34. `/c/mcp-registry-official/mcp/markdown` — 2026-09-12 16:00:45Z — 200

## What it asked for that did not exist

- `/.well-known/oauth-protected-resource` — 404×2 — first asked 2026-09-04 18:39:55Z; still absent, on purpose — No (https://www.pathwren.workers.dev/security.html)
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/doctor` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/lint` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/netcheck` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/triage` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp/robots` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-protected-resource/c/mcp-registry-official/mcp` — 404×1 — first asked 2026-09-04 18:39:55Z; still absent
- `/.well-known/oauth-authorization-server` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent, on purpose — No (https://www.pathwren.workers.dev/security.html)
- `/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent, on purpose — No (https://www.pathwren.workers.dev/security.html)
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/netcheck` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/doctor/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp/triage` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp/doctor` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/lint/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp/netcheck` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/robots` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/triage/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp/robots` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp/lint` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/netcheck/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/lint` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/doctor` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp/triage` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/openid-configuration/c/mcp-registry-official/mcp` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/.well-known/oauth-authorization-server/c/mcp-registry-official/mcp` — 404×1 — first asked 2026-09-04 18:39:56Z; still absent
- `/c/mcp-registry-official/mcp/robots/.well-known/openid-configuration` — 404×1 — first asked 2026-09-04 18:39:56Z; 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 Bun/1.3.14?**  
  `curl -s 'https://www.pathwren.workers.dev/tools/classify-ua?ua=Bun%2F1.3.14&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/bun.json · all clients: https://www.pathwren.workers.dev/data/observed-clients.json