io.github.lihtness/gnomon-mcp
gnomon
Is the gnomon MCP server down? No. Installed with mcp<2, it started and listed its tools on 2026-11-01.
Deterministic batch tools so LLM agents stop guessing dates and math.
needs mcp<2 probed 2026-11-14 · unchanged since 2026-11-01
A plain install of the package stops at the import below. These tool definitions are from a second install with mcp<2, started in a container with the network off, on 2026-11-01.
MCP error -32000: Connection closed ModuleNotFoundError: No module named 'mcp.server.fastmcp'. This is mcp 2.x, where FastMCP was renamed to MCPServer (from mcp
- Run it
- uvx --with 'mcp<2' gnomon-mcp@0.1.2 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- gnomon 1.30.0
- Capabilities
- experimental, prompts, resources, tools
- Repository
- https://github.com/lihtness/gnomon-mcp
- Registry
- active, updated 2026-05-25 · registry entry
- Changes
- 2 recorded, reachable in 0 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| calendar | 176 | 40 % |
| calc_convert | 100 | 23 % |
| now | 80 | 18 % |
| calc | 79 | 18 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- io.github.lightnet19/pddikti-mcp-server · install failed
- io.github.lightnet19/sinta-mcp-server · install failed
- io.github.lightnet19/stb-mcp-server · install failed
- LightNow MCP Proxy io.github.lightnow-ai/lightnow-proxy · needs args
- fittok io.github.likhithreddy/fittok · alive
- cal-scheduler io.github.limey/cal-scheduler-mcp · alive
- Boson Video io.github.linboxin/boson-video · alive
- io.github.lineai-intelligence/lineai-mcp-server · alive
Servers that mention deterministic or guessing.
- ai.boundaryai/boundaryai · needs auth
- ColdState — Deterministic Knowledge Infrastructure ai.coldstate/knowledge · alive
- DJZS Trust MCP ai.djzs/trust-mcp · alive
- ai.geodesiclabs/governance-platform · alive
- MLP Tax Computation Engine ai.lucasandersen/mlp-tax · alive
- MakerPortal compute ai.makerportal/compute · alive
- Siren ai.mysiren/siren · alive
- Snipget ai.snipget/snipget · needs auth
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-11-01 08:13 | needs mcp<2 | 2.1 s | 4 | 790 | 435 |
| 2026-10-18 06:41 | crashed on start |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The package imports FastMCP from mcp.server.fastmcp. mcp 2.0, the Python SDK of 28 July 2026, renamed FastMCP to MCPServer, and the package asks for mcp with no upper bound, so a plain install (uvx, pip) gets mcp 2.x and the server stops at the import. Installed with mcp<2, it starts and lists its tools. The fix for the publisher: pin mcp<2 in the dependencies, for example mcp>=1.2,<2, and publish a new version, or move to MCPServer as the SDK's migration guide says. Until then, run it with uvx --with 'mcp<2'.
The cause and the fix, with the code before and after: ModuleNotFoundError: No module named 'mcp.server.fastmcp'