io.github.mrfentmen/mol2-mcp
mol2-mcp
Is the io.github.mrfentmen/mol2-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.
MOL2 MCP: parse molecules, validate atoms, coordinates, bonds and counts.
alive probed 2026-11-14 · unchanged since 2026-11-13
- Run it
- npx -y @mrfentmen/mol2-mcp@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- mol2-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 2.7k tokens in Claude Opus 5.5, exact, measured 2026-11-13. With the Claude Code prefix mcp__…__ on each tool name: 2.8k. The o200k_base estimate is 1.4k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/mrfentmen/awesome-servers
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.87×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| search | 269 | 144 | 10 % |
| diff | 244 | 131 | 9 % |
| get_record | 222 | 119 | 8 % |
| write_file | 218 | 117 | 8 % |
| list_records | 216 | 116 | 8 % |
Compare this server with others, or with the servers that share its tool set.
Same tool set as 2 other servers
These registry entries have the same tool names and the same schema sizes.
- io.github.mrfentmen/spef-mcp npmjs.com
- io.github.mrfentmen/ssis-mcp npmjs.com
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.mrfentmen/modula-2-mcp · alive
- io.github.mrfentmen/modula-3-mcp · alive
- io.github.mrfentmen/module-management-system-mcp · alive
- io.github.mrfentmen/mojo-mcp · alive
- io.github.mrfentmen/monkey-c-mcp · alive
- io.github.mrfentmen/monkey-mcp · alive
- io.github.mrfentmen/moocode-mcp · alive
- io.github.mrfentmen/moon-phase-mcp · alive
Servers that mention mol2 or coordinates or molecules.
- io.github.amol21p/interactive-terminal · alive
- DaedalMap Geography Tools (loc_id) com.daedalmap/geocoding · alive
- DaedalMap Reverse Geocoding (coordinates to loc_id) com.daedalmap/reverse-geocoding · alive
- Postal Codes com.invokera/postal-codes · alive
- Moonlora com.moonlora/moonlora · alive
- Mariner GPS Tools com.watchandnavy/mariner-gps-tools · alive
- In meiner Nähe – local businesses in Germany de.agentifizierung.naehe/in-meiner-naehe · alive
- io.github.HyosikPark/geocode · TLS error
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 server answers initialize and tools/list. Nothing to fix.