io.github.cyanheads/reference-data-mcp-server
reference-data-mcp-server
Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.
alive probed 2026-10-09 · HTTP 200
10tools
4.4ktokens in Claude Opus 5.5
4.5ktokens in Claude Code
2.2 %of a 200k context window
2.6ko200k_base estimate
330 msto initialize
82 msto list tools
- Endpoint
- https://reference-data.caseyjhand.com/mcp (streamable-http)
- Host
- reference-data.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- reference-data-mcp-server 0.1.17
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 410 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/reference-data-mcp-server.git
- Registry
- active, updated 2026-10-09 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| ref_unit_convert | 371 | 14 % |
| ref_element_search | 351 | 14 % |
| ref_timezone_convert | 311 | 12 % |
| ref_geo_search | 278 | 11 % |
| ref_timezone_lookup | 278 | 11 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:18 | alive | 477 ms | 10 | 4.4k | 2.6k |
| 2026-10-05 14:39 | alive | 330 ms | 10 | 4.4k | 2.6k |
| 2026-10-05 00:33 | alive | 201 ms | 10 | 2.6k | |
| 2026-10-04 10:04 | alive | 362 ms | 10 | 2.6k | |
| 2026-10-04 07:57 | alive | 326 ms | 10 | 2.6k | |
| 2026-10-03 20:37 | alive | 842 ms | 10 | 2.6k | |
| 2026-10-03 17:53 | alive | 620 ms | 10 | 2.6k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/reference-data-mcp-server)
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.