ExpertPack Eval

---

name: expertpack-eval

description: "Measure ExpertPack EK (Esoteric Knowledge) ratio and run automated quality evals. Use when: (1) Measuring what percentage of a pack's content frontier LLMs cannot produce on their own, (2) Running automated eval sets against a pack-powered agent with LLM-as-judge scoring. Requires OpenRouter API key (auto-resolved from OpenClaw auth or OPENROUTER_API_KEY env var). Companion to the main expertpack skill. Triggers on: 'EK ratio', 'measure EK', 'blind probe', 'eval expertpack', 'pack quality eval', 'run eval', 'esoteric knowledge ratio'."

metadata:

openclaw:

homepage: https://expertpack.ai

requires:

bins:

- python3

---

# ExpertPack Eval

Measure and evaluate ExpertPack quality. Companion to the core [expertpack](https://clawhub.ai/skills/expertpack) skill.

**Note:** This skill makes external API calls to OpenRouter for blind probing and LLM-as-judge scoring. Requires an API key.

1. Measure EK Ratio

Blind-probe frontier models to measure what percentage of a pack's propositions they cannot answer without the pack loaded:

python3 {skill_dir}/scripts/eval-ek.py <pack-path> [--models model1,model2] [--sample N] [--output FILE]

**Interpretation:**

| EK Ratio | Meaning |

|----------|---------|

| 0.80+ | Exceptional — almost entirely esoteric |

| 0.60–0.79 | Strong — majority esoteric |

| 0.40–0.59 | Mixed — significant GK padding |

| 0.20–0.39 | Weak — most content already in weights |

| < 0.20 | Minimal value-add |

Add measured ratio to `manifest.yaml`:

ek_ratio:
  value: 0.72
  measured: "2026-03-12"
  models: ["gpt-4.1-mini", "claude-sonnet-4-6", "gemini-2.0-flash"]
  propositions_tested: 142

2. Run Quality Eval

Automated eval against a pack-powered agent endpoint:

python3 {skill_dir}/scripts/run-eval.py \
  --questions <eval-set.yaml> \
  --endpoint <ws://host:port/path> \
  --output <results.yaml> \
  --label "baseline"

**Learn more:** [expertpack.ai](https://expertpack.ai) · [GitHub](https://github.com/brianhearn/ExpertPack)