io.github.jaimenbell/rails-mcp
rails-mcp
Default-deny action registry, append-only spend ledger, and human sign-off audit trail (MCP tools).
alive probed 2026-10-14
6tools
1.0ktokens in Claude Opus 5.5
1.1ktokens in Claude Code
0.5 %of a 200k context window
560o200k_base estimate
8.2 sto initialize
10 msto list tools
- Run it
- uvx rails-mcp==0.1.0 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- rails-mcp 3.4.2
- Capabilities
- experimental, extensions, logging, prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/jaimenbell/rails-mcp
- Registry
- active, updated 2026-07-24 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| record_spend_intent | 111 | 20 % |
| classify_action | 110 | 20 % |
| get_signoff_state | 92 | 16 % |
| evaluate_budget | 90 | 16 % |
| get_rails_hash | 80 | 14 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.jaimenbell/rails-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.