io.github.cyanheads/usgs-water-mcp-server
usgs-water-mcp-server
Query real-time and historical USGS water data from ~8,000 stream gages and groundwater wells.
alive probed 2026-10-05 · HTTP 200
7tools
6.1ktokens in Claude Opus 5.5
6.2ktokens in Claude Code
3.0 %of a 200k context window
3.7ko200k_base estimate
354 msto initialize
105 msto list tools
- Endpoint
- https://usgs-water.caseyjhand.com/mcp (streamable-http)
- Host
- usgs-water.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- usgs-water-mcp-server 0.3.0
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 1 369 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/usgs-water-mcp-server
- Registry
- active, updated 2026-10-04 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| water_find_sites | 1 082 | 29 % |
| water_get_series | 798 | 21 % |
| water_get_readings | 569 | 15 % |
| water_list_parameters | 389 | 10 % |
| water_get_conditions | 364 | 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 14:40 | alive | 354 ms | 7 | 6.1k | 3.7k |
| 2026-10-05 00:33 | alive | 170 ms | 7 | 3.7k | |
| 2026-10-04 10:04 | alive | 427 ms | 7 | 3.7k | |
| 2026-10-04 07:57 | alive | 5.7 s | 7 | 3.7k | |
| 2026-10-03 20:37 | alive | 1.2 s | 7 | 3.7k | |
| 2026-10-03 17:53 | alive | 445 ms | 7 | 3.7k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/usgs-water-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.