dev.usaref/reference-data
usaref
N American govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 10 countries; USA free.
alive probed 2026-10-13 · HTTP 200
22tools
13ktokens in Claude Opus 5.5
13ktokens in Claude Code
6.4 %of a 200k context window
7.9ko200k_base estimate
2.6 sto initialize
1.1 sto list tools
- Endpoint
- https://usaref.dev/mcp (streamable-http)
- Host
- usaref.dev
- Protocol
- 2025-11-25
- Reports itself as
- usaref 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- 1 151 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-13. Counted again when the tool definitions change. Method.
- Website
- https://usaref.dev
- Registry
- active, updated 2026-08-02 · registry entry
- Reachable
- 8 of the last 8 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| settlement_date | 669 | 8 % |
| compute_employment_cost | 570 | 7 % |
| compute_statutory_interest | 536 | 7 % |
| get_public_holidays_worldwide | 478 | 6 % |
| count_working_days | 450 | 6 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-13 11:11 | alive | 2.7 s | 22 | 13k | 7.9k |
| 2026-10-09 11:14 | alive | 4.0 s | 16 | 9.4k | 5.8k |
| 2026-10-05 14:00 | alive | 2.6 s | 16 | 9.4k | 5.8k |
| 2026-10-05 00:25 | alive | 1.3 s | 16 | 5.8k | |
| 2026-10-04 10:00 | alive | 1.7 s | 16 | 5.8k | |
| 2026-10-04 07:53 | alive | 2.7 s | 16 | 5.8k | |
| 2026-10-03 20:33 | alive | 2.9 s | 16 | 5.8k | |
| 2026-10-03 17:50 | alive | 1.4 s | 16 | 5.8k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.usaref/reference-data)
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.