dev.workers.pathwren.www/ai-crawler-index
AI Crawler Index
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
alive probed 2026-10-05 · HTTP 200
9tools
3.3ktokens in Claude Opus 5.5
3.5ktokens in Claude Code
1.7 %of a 200k context window
2.0ko200k_base estimate
61 msto initialize
27 msto list tools
- Endpoint
- https://www.pathwren.workers.dev/c/mcp-registry-official/mcp (streamable-http)
- Host
- www.pathwren.workers.dev
- Protocol
- 2025-11-25
- Reports itself as
- ai-crawler-index 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- 4 462 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Website
- https://www.pathwren.workers.dev/c/mcp-registry-official/mcp.html
- Registry
- active, updated 2026-09-07 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| example | 334 | 17 % |
| whoami | 320 | 16 % |
| list_crawlers | 251 | 13 % |
| classify_user_agent | 209 | 11 % |
| is_verified_crawler_ip | 205 | 10 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 14:02 | alive | 61 ms | 9 | 3.3k | 2.0k |
| 2026-10-05 00:25 | alive | 43 ms | 9 | 2.0k | |
| 2026-10-04 10:00 | alive | 73 ms | 9 | 2.0k | |
| 2026-10-04 07:54 | alive | 25 ms | 9 | 2.0k | |
| 2026-10-03 20:33 | alive | 55 ms | 9 | 2.0k | |
| 2026-10-03 17:50 | alive | 99 ms | 9 | 2.0k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.workers.pathwren.www/ai-crawler-index)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.