pi-exit-summary

Pi extension that prints a provider-neutral token usage summary when Pi exits

Package details

extension

Install pi-exit-summary from npm and Pi will load the resources declared by the package manifest.

$ pi install npm:pi-exit-summary

Pi manifest JSON

{
  "extensions": [
    "./src/extension.ts"
  ]
}

Pi packages can execute code and influence agent behavior. Review the source before installing third-party packages.

A Pi extension that prints a Codex-style token usage summary when you exit Pi:

Token usage: total=23,253 input=22,544 (+104,960 cached) output=709 (reasoning 57) cost=$0.42
To resume this session: pi --session 3fb0c1e2-...

(The second line is printed by Pi itself; this extension adds the first.)

pi install npm:pi-exit-summary

Try it once without installing:

pi -e npm:pi-exit-summary

Hooks the session_shutdown event and prints one line after the terminal has been restored, right before Pi's own "To resume this session" hint.
Usage totals are computed from session entries: assistant messages, tool-result nested usage, standalone usage entries (e.g. cache warming), compaction summaries, and branch summaries — the same sources Pi uses for its session totals.
Provider-neutral by design: Pi normalizes usage for every provider (Anthropic, OpenAI, Google, custom providers) into one Usage shape before it reaches session entries, so this works with any API. Providers that do not report cache or reasoning tokens simply omit those segments.

Interactive TUI mode only; print/JSON/RPC output stays clean.
Silent when the session recorded no model usage.
reasoning is displayed as a subset of output, matching provider semantics (never double-counted).
cost uses the per-model rates Pi already computes; zero-cost setups (e.g. subscriptions) omit the segment.

MIT