io.github.cyanheads/cern-opendata-mcp-server
cern-opendata-mcp-server
io.github.cyanheads/cern-opendata-mcp-server costs 3 919 tokens of context per session. It has 7 tool definitions. That is 2.0 % of a 200k window. Measured 2026-10-03.
Search CERN Open Data, fetch records, files, analysis environments, CMS good-run lists, HLT paths.
alive probed 2026-10-03 · HTTP 200
7tools
3.9ktokens for the tool definitions
2.0 %of a 200k context window
1.3 sto initialize
419 msto list tools
- Endpoint
- https://cern-opendata.caseyjhand.com/mcp (streamable-http)
- Host
- cern-opendata.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- cern-opendata-mcp-server 0.2.0
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 1 538 characters
- Repository
- https://github.com/cyanheads/cern-opendata-mcp-server
- Registry
- active, updated 2026-10-02 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens | Share of this server |
|---|---|---|
| cern_opendata_search_records | 1 567 | 40 % |
| cern_opendata_search_trigger_paths | 592 | 15 % |
| cern_opendata_get_validated_runs | 508 | 13 % |
| cern_opendata_get_records | 467 | 12 % |
| cern_opendata_list_files | 344 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Tokens |
|---|---|---|---|---|
| 2026-10-03 20:37 | alive | 1.3 s | 7 | 3.9k |
| 2026-10-03 17:53 | alive | 572 ms | 7 | 3.9k |
Badge
[](https://mcp-pulse.ulehla.dev/s/io.github.cyanheads/cern-opendata-mcp-server)