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Format code on the current branch using Biome.
Passed 18 of 22 test cases with the skill, and 7 of 22 without it.
and 9 more in the full report
11 fixed7 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.8-flash on 10/18/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
From which folder location in the repository must the branch formatting script be executed?
| Checked | Without skill | With skill |
|---|---|---|
| States that execution must occur from the repository root. | Missed | Passed |
The instructions your model reads when the skill loads.
Format JS/TS/JSON files changed on the current branch using Biome.
.claude/skills/code-formatting/scripts/format-branch.sh
This formats all .js, .ts, .jsx, .tsx, .json, .jsonc files changed compared to main.
.claude/skills/code-formatting/scripts/format-branch.sh develop
npx @biomejs/biome check --write on those filesci-pull-request-checks.yml CI workflowBiome config is at biome.jsonc in repo root.
test cases passed, vs 7 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.