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Execute a pairwise comparison between two candidates, producing a judgment with winner, confidence, and reasoning.
Passed 20 of 22 test cases with the skill, and 11 of 22 without it.
and 9 more in the full report
11 fixed10 passed either way1 still failing1 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.
Compare Model Output A (valid JSON response) and Model Output B (malformed JSON string). Model Output A clearly wins. What is the maximum allowable confidence value for this decision in the evaluation contract?
| Checked | Without skill | With skill |
|---|---|---|
| Sets the confidence score to a value not exceeding 1.0. | Missed | Passed |
The instructions your model reads when the skill loads.
Executes a single pairwise comparison between two candidates. Produces a structured judgment indicating the winner, confidence level, and detailed reasoning supporting the decision.
Runs as a subagent. Receives a pair of candidates and evaluation context, returns a judgment.
Each comparison requires focused deliberation on the specific pair without being influenced by prior ranking expectations. Isolation prevents anchoring bias from the current leaderboard.
Output MUST declare exactly one winner from the pair (no ties unless context explicitly permits ties). Confidence MUST be a value in [0.5, 1.0]. Reasoning MUST reference specific attributes of both candidates.
Optional, no fixed order; the final leaf is always a sop.
| SOP | When to use |
|---|---|
| spawn-agent | Spawn a customized CC subagent with full MCP tool access. Used by SOPs that declare execution: subagent. |
test cases passed, vs 11 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.