io.github.pipeworx-io/chembl
Chembl
ChEMBL MCP — drug discovery database (EBI).
alive probed 2026-10-15 · HTTP 200
48tools
39ktokens in Claude Opus 5.5
39ktokens in Claude Code
19.5 %of a 200k context window
24ko200k_base estimate
113 msto initialize
100 msto list tools
- Endpoint
- https://gateway.pipeworx.io/chembl/mcp (streamable-http)
- Host
- gateway.pipeworx.io
- Protocol
- 2025-03-26
- Reports itself as
- pipeworx-gateway 0.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- 704 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/pipeworx-io/mcp-chembl
- Website
- https://pipeworx.io/packs/chembl
- Registry
- active, updated 2026-09-25 · registry entry
- Reachable
- 16 of the last 16 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| polymarket_kalshi_spread | 1 738 | 7 % |
| bet_research | 1 225 | 5 % |
| polymarket_edges | 1 175 | 5 % |
| subscribe | 1 134 | 5 % |
| company_facts | 1 093 | 5 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 11:04 | alive | 68 ms | 48 | 39k | 24k |
| 2026-10-14 19:18 | alive | 108 ms | 48 | 39k | 24k |
| 2026-10-14 09:33 | alive | 120 ms | 48 | 39k | 24k |
| 2026-10-13 11:24 | alive | 111 ms | 47 | 37k | 23k |
| 2026-10-12 11:53 | alive | 227 ms | 47 | 37k | 22k |
| 2026-10-11 10:33 | alive | 120 ms | 47 | 37k | 22k |
| 2026-10-10 10:28 | alive | 134 ms | 47 | 37k | 22k |
| 2026-10-09 11:27 | alive | 80 ms | 47 | 37k | 22k |
| 2026-10-08 11:22 | alive | 86 ms | 43 | 33k | 20k |
| 2026-10-07 11:19 | alive | 236 ms | 43 | 33k | 20k |
| 2026-10-05 15:32 | alive | 113 ms | 43 | 33k | 20k |
| 2026-10-05 00:45 | alive | 81 ms | 43 | 20k | |
| 2026-10-04 10:07 | alive | 98 ms | 43 | 20k | |
| 2026-10-04 08:00 | alive | 51 ms | 43 | 20k | |
| 2026-10-03 20:40 | alive | 100 ms | 43 | 20k | |
| 2026-10-03 17:56 | alive | 134 ms | 43 | 20k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.pipeworx-io/chembl)
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.