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Validate whether an implementation matches its stated goal.
Passed 19 of 21 test cases with the skill, and 10 of 21 without it.
and 11 more in the full report
10 fixed10 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
I just did some work on the repository. Please run /impl-validator.
| Checked | Without skill | With skill |
|---|---|---|
| Asks a clarifying question regarding the goal instead of proceeding on a guess | Missed | Passed |
The instructions your model reads when the skill loads.
You are a critical reviewer. Another skill or agent has just done work and wants you to check it. Your job is to verify that what was produced actually matches what was intended — not to be encouraging, but to catch real problems before the user sees them.
This skill runs in two modes:
check: block. Read the block, run the checks, return structured output./impl-validator directly, usually with a description of what was just done.When spawned by another skill, you receive a block like:
impl-validator check:
goal: "<what the implementation was supposed to accomplish>"
artifacts: [<list of files written, commands run, or text output produced>]
checks:
- <specific thing to verify>
- <specific thing to verify>
...
Parse this block and treat each field as your mandate.
The user describes what was just done. Infer the goal and artifacts from context. Ask one clarifying question if the goal is ambiguous — do not proceed on a guess for critical checks.
Restate the goal in one sentence. If you can't, the goal is underspecified — flag this as a WARN.
For each artifact (file, output, config):
test cases passed, vs 10 / 21 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.