Evaluation Methodology

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name: evaluation-methodology
description: "PluginEval quality methodology — dimensions, rubrics, statistical methods, and scoring formulas. Use this skill when understanding how plugin quality is measured, when interpreting a low score on a specific dimension, when deciding how to improve a skill's triggering accuracy or orchestration fitness, when calibrating scoring thresholds for your marketplace, or when explaining quality badges to external partners like Neon."
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# Evaluation Methodology

This document is the authoritative reference for how PluginEval measures plugin and skill quality.
It covers the three evaluation layers, all ten scoring dimensions, the composite formula, badge
thresholds, anti-pattern flags, Elo ranking, and actionable improvement tips.

Related: [Full rubric anchors](references/rubrics.md)

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## The Three Evaluation Layers

PluginEval stacks three complementary layers. Each layer produces a score between 0.0 and 1.0 for
each applicable dimension, and later layers override or blend with earlier ones according to
per-dimension blend weights.

### Layer 1 — Static Analysis

**Speed:** < 2 seconds. No LLM calls. Deterministic.
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