io.github.chrischall/signupgenius-mcp
signupgenius
SignUpGenius for Claude — sign-ups, slots, groups, and RSVPs. Free accounts or Pro API key.
alive probed 2026-10-15
20tools
6.8ktokens in Claude Opus 5.5
7.1ktokens in Claude Code
3.4 %of a 200k context window
3.9ko200k_base estimate
350 msto initialize
59 msto list tools
- Run it
- npx -y signupgenius-mcp@2.1.10 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- signupgenius 2.1.10
- Capabilities
- 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/chrischall/signupgenius-mcp
- Registry
- active, updated 2026-10-10 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| signupgenius_rsvp | 688 | 17 % |
| signupgenius_claim_slot | 668 | 17 % |
| signupgenius_release_slot | 421 | 11 % |
| signupgenius_add_group_member | 370 | 9 % |
| signupgenius_list_slots | 272 | 7 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.chrischall/signupgenius-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.