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agentsop-domain-eval-set

Build and govern a 50-200 example domain-specific held-out benchmark sampled from real traffic. Distinct from public benchmarks (MMLU/HumanEval/GSM8K via lm-evaluation-harness) which measure GENERAL capability. Only a held-out domain set predicts whether THIS system works on YOUR data. Collect real examples, label, hold out (never train/prompt on it), size 50-200, version it, refresh on drift.

skills/agentsop-domain-eval-set/SKILL.md

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# domain-eval-set — Your Held-Out Domain Benchmark

> "Compiled program beats baseline on a *held-out* test set (not the val set used in optimization)."
> — DSPy SOP exit criterion [dspy.ai/learn/optimization/overview/]

> "Build the eval loop **before** optimizing anything. Every subsequent change must be gated on these numbers."
> — LlamaIndex SOP Stage 2

This is an **ENHANCE overlay** skill. It produces one artifact — a versioned,
sealed, human-labeled set of 50–200 examples drawn from *your* domain — that
other skills consume: `[[agentsop-regression-gate]]` enforces it on every PR,
`[[agentsop-metric-design]]` defines the scoring function applied to each example, and
`[[lm-evaluation-harness]]` runs the *complementary* public-capability axis. The
core claim: **public benchmarks tell you the model is smart in general; only a