0.12.4New version of Boost released
New releasev0.12.4Aug 19, 2026

New version of Boost released— Smarter savings and cleaner output

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$ features

GitHub PR agent usage comments

See how much each agent harness and model spent on a pull request — tokens and estimated cost — without leaving GitHub.

See it on a pull request

Boost posts or updates a single GitHub PR comment with per-harness / per-model token usage and cost when the boost-pr-usage-comments feature flag is on.

How it works

On boost sync (the Stop hook), Boost aggregates agent session usage for the current branch, finds an open PR, and upserts one managed comment (<!-- boost-pr-usage -->). Rows break down input, output, cache, totals, and USD cost by harness and model.

Enabling

Gradual rollout via Unleash flag boost-pr-usage-comments (default off). Requires gh authenticated against the repo. Inspect local flag state with boost feature-flags; force a refresh with boost sync.