io.github.richardofortune/cadloop-slicer
cadloop Slicer
Is the cadloop Slicer MCP server down? No. Installed with mcp<2, it started and listed its tools on 2026-10-31.
Find printer profiles, check bed fit, slice to .gcode.3mf and extract the G-code.
needs mcp<2 probed 2026-11-14 · unchanged since 2026-10-31
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 2026-10-31.
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' cadloop@0.1.0 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- openscad 1.30.0
- Capabilities
- experimental, prompts, resources, tools
- Repository
- https://github.com/richardofortune/cadloop
- Website
- https://github.com/richardofortune/cadloop
- Registry
- active, updated 2026-07-27 · 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 |
|---|---|---|
| preview | 369 | 30 % |
| render | 234 | 19 % |
| measure | 155 | 13 % |
| check | 142 | 12 % |
| echo | 128 | 10 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- Volante io.github.ribato22/volante · needs args
- io.github.ribhav-jain/docsonar · needs mcp<2
- AI2Human io.github.richard7463/ai2human-mcp · alive
- cadloop OpenSCAD io.github.richardofortune/cadloop-openscad · crashed on start
- Arquimedes io.github.richer-richard/arquimedes · alive
- io.github.ridhwaan-ai/pressready · alive
- io.github.rijul170/alertlogic-mcp · crashed on start
- io.github.rijul170/falcon-mcp · crashed on start
Servers that mention slicer.
- FabTally 3D-Print Slicer, Quote & DFM com.fabtally/slicer · alive
- DocSlicer io.github.DocSlicer/docslicer · needs args
- io.github.MaxEllis/orcaslicer-mcp · alive
- meek_3d_print_toolchain_mcp io.github.CSOAI-ORG/meek_3d_print_toolchain_mcp · crashed on start
- SlicerBridge io.github.UnicornGraveyard/slicerbridge · alive
- slicer Competitor Watch dev.slicer/competitor-watch · 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 |
|---|---|---|---|---|---|
| 2026-10-31 07:40 | needs mcp<2 | 1.5 s | 9 | 2.2k | 1.2k |
| 2026-10-17 06:19 | 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'