io.github.oceanmodeling/rtofs-mcp
NOAA RTOFS MCP Server
NOAA RTOFS global ocean forecast — SST, salinity, currents, depth profiles via HYCOM THREDDS
alive probed 2026-10-15
8tools
3.8ktokens in Claude Opus 5.5
3.9ktokens in Claude Code
1.9 %of a 200k context window
2.2ko200k_base estimate
3.1 sto initialize
11 msto list tools
- Run it
- uvx rtofs-mcp==0.1.3 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- rtofs_mcp 1.30.0
- Capabilities
- experimental, prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/oceanmodeling/ocean-mcp
- Registry
- active, updated 2026-10-14 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| rtofs_get_surface_forecast | 470 | 21 % |
| rtofs_get_area_forecast | 390 | 17 % |
| rtofs_get_transect | 365 | 16 % |
| rtofs_get_profile_forecast | 289 | 13 % |
| rtofs_compare_with_observations | 263 | 12 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.oceanmodeling/rtofs-mcp)
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.