io.github.eternal-roman/ledger
ledger
Exact-decimal double-entry for agents. Call MCP tools; do not do money math in tokens.
alive probed 2026-10-14
20tools
9.7ktokens in Claude Opus 5.5
9.9ktokens in Claude Code
4.9 %of a 200k context window
5.2ko200k_base estimate
215 msto initialize
7 msto list tools
- Run it
- npx -y @eternal-roman/ledger-mcp@0.19.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- ledger 0.19.1
- Capabilities
- 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/eternal-roman/ledger
- Registry
- active, updated 2026-08-14 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| periods_guarded_post | 543 | 10 % |
| ledger_post | 504 | 10 % |
| trace_run | 454 | 9 % |
| artifact_make | 452 | 9 % |
| entry_validate | 446 | 9 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.eternal-roman/ledger)
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.