Add git_diff tool; truncate patch in changed_files to cut LLM cost#2552
Merged
hiroshinishio merged 1 commit intomainfrom Apr 18, 2026
Merged
Add git_diff tool; truncate patch in changed_files to cut LLM cost#2552hiroshinishio merged 1 commit intomainfrom
hiroshinishio merged 1 commit intomainfrom
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- New git_diff tool lets the agent fetch diffs on demand per file instead of embedding the full patch (101K+) in every LLM message - Truncate patch field in changed_files to 1000 chars in check_suite_handler before serializing to the first LLM message - Add tests for git_diff, patch truncation, and tool registration
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Summary
git_difftool so the agent can fetch diffs on demand per file instead of embedding the full patch in every LLM message (was 101K+ chars repeated across 30+ calls)patchfield inchanged_filesto 1,000 chars before serializing to the first LLM message in check_suite_handlerSocial Media Post (GitAuto)
New: git_diff tool for on-demand diffs
Social Media Post (Wes)
One PR cost us $56 yesterday. Traced it to a 101K-char diff copy-pasted into every single LLM call, 30 times. The fix: let the agent pull diffs on demand instead of front-loading everything. Obvious in hindsight.