Prices your Claude Code and Codex sessions from the transcripts on disk, shows what each agent cost over any period, and tells you in plain English what would have been cheaper. CLI, Browser UI and MC
Tallybook Prices every Claude Code and Codex session on your disk, shows what each agent cost over any period, and tells you in plain English what would have been cheaper.
No proxy, no API key, nothing leaves your machine. Run it as a CLI, open the same report in your browser with tallybook --serve, or add tallybook-mcp to Claude Code or Codex and ask the agent itself what it's spending and what would be cheaper.
Also available via go install github.com/magna-nz/tallybook/cmd/tallybook@latest, or as a release download. Works on macOS, Linux and Windows.
Add the MCP server so your agent can check its own spend mid-session — tallybook-mcp ships alongside tallybook, so no separate install:
For Codex, add it to ~/.codex/config.toml:
The command reference, the MCP server's tools, configuration, and the privacy model live on the documentation site.
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
[](https://mcp.liqiwa.com/s/magna-nz--tallybook.html)
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