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eval-harness

Formal evaluation framework for Claude Code sessions implementing eval-driven development (EDD) principles

66

2.08x
Quality

17%

Does it follow best practices?

Impact

100%

2.08x

Average score across 6 eval scenarios

SecuritybySnyk

The risk profile of this skill

Fix and improve this skill with Tessl

tessl review fix ./docs/zh-TW/skills/eval-harness/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

27%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This skill reads more like a conceptual whitepaper on eval-driven development than an actionable skill for Claude Code. It is excessively verbose, explaining well-known concepts (regression testing, pass@k metrics, what graders are) while lacking concrete, executable tooling—the /eval commands referenced don't appear to be real. The content would benefit greatly from being condensed to its unique value-add and providing actual runnable scripts.

Suggestions

Cut the philosophy, metrics definitions, and grader type explanations (Claude knows these) and focus on the specific eval template formats and file conventions unique to this project.

Replace the fictional /eval slash commands with actual executable scripts or concrete bash/Python commands that Claude can run to perform eval operations.

Add an explicit feedback loop in the workflow for handling eval failures: what to check, how to iterate, and when to escalate to human review.

Split the monolithic content: keep a concise overview in SKILL.md and move grader types, the authentication example, and best practices into separate referenced files.

DimensionReasoningScore

Conciseness

Extremely verbose for what it conveys. Explains basic concepts Claude already knows (what pass@k means, what evals are, what regression testing is). The philosophy section, grader type explanations, and best practices are largely common knowledge. The document is ~180 lines but could convey its unique value in under 50 lines.

1 / 3

Actionability

Provides some concrete templates (eval definition format, report format, bash grader examples) but the integration commands (/eval define, /eval check, /eval report) appear to be fictional slash commands with no implementation. The workflow is more of a conceptual framework than executable guidance—there's no actual script or tool to run these evals.

2 / 3

Workflow Clarity

The 4-phase workflow (Define → Implement → Evaluate → Report) is clearly sequenced, but validation checkpoints are weak. There's no explicit feedback loop for what to do when evals fail (just 'fix and re-run' implied). The 'Implementation' phase is literally just '[write code]' with no guidance on iteration when evals don't pass.

2 / 3

Progressive Disclosure

Monolithic wall of text with no references to external files despite being long enough to warrant splitting. The eval types, grader types, metrics definitions, best practices, and full example could each be separate referenced documents. No bundle files exist to support progressive disclosure either.

1 / 3

Total

6

/

12

Passed

Description

7%Scale 1-3

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

This description is too abstract and jargon-heavy to be effective for skill selection. It fails to specify concrete actions the skill performs, lacks natural trigger terms users would use, and provides no guidance on when Claude should select this skill. The description reads more like a title than a functional description.

Suggestions

List specific concrete actions the skill performs, e.g., 'Creates evaluation test cases, defines scoring rubrics, runs eval suites against Claude Code outputs, and tracks performance metrics.'

Add an explicit 'Use when...' clause with natural trigger terms, e.g., 'Use when the user asks to evaluate code quality, set up evals, benchmark Claude Code outputs, or implement eval-driven development workflows.'

Replace jargon like 'EDD principles' with plain-language descriptions of what those principles entail, while keeping the acronym as a secondary trigger term.

DimensionReasoningScore

Specificity

The description uses abstract language like 'formal evaluation framework' and 'EDD principles' without listing any concrete actions. It doesn't specify what the skill actually does (e.g., create test cases, run benchmarks, score outputs, generate reports).

1 / 3

Completeness

The description weakly addresses 'what' (a framework for evaluation) but provides no 'when' guidance whatsoever. There is no 'Use when...' clause or equivalent explicit trigger guidance.

1 / 3

Trigger Term Quality

The terms used are highly technical jargon ('eval-driven development', 'EDD principles', 'formal evaluation framework') that users are unlikely to naturally say. Common trigger terms like 'evaluate', 'test', 'benchmark', 'score', or 'assess' are missing.

1 / 3

Distinctiveness Conflict Risk

The mention of 'Claude Code sessions' and 'eval-driven development (EDD)' provides some specificity to a niche, but the term 'evaluation framework' is broad enough to potentially overlap with testing, QA, or code review skills.

2 / 3

Total

5

/

12

Passed

Validation

90%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

10

/

11

Passed

Repository
ysyecust/everything-claude-code
Reviewed

Table of Contents

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