5 factor evals
Reusable Factor Skills for Agent-native product optimization
npx -y skills add Just-Agent/just-product-factor --skill 5-factor-evalsAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
One thing to look at
- 1 stars1 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
SKILL.md
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5-factor-evals
Version: v0.7.0
Skill name
5-factor-evals
Purpose
Use 5-factor-evals to audit and improve evaluation, regression testing, benchmark, and release confidence systems for Agent-native products. It turns vague quality claims into repeatable checks that can be run before and after refactors.
When to use
Use this Skill when:
- A project uses LLMs, Agents, RAG, tools, prompts, generated UI, or automated workflows and needs measurable quality gates.
- A user asks whether changes made the product better or worse.
- A repository has examples, demos, or tests but no stable acceptance suite.
- Releases are risky because there is no baseline, no golden cases, no regression log, or no failure taxonomy.
- Multiple Factor Skills produce recommendations and the team needs a shared validation layer.
When not to use
Do not use this Skill as a replacement for domain review. Pair it with the relevant primary Skill such as 12-factor-agents, 9-factor-rag, 10-factor-html, 11-factor-cli, or 13-factor-product-readiness.
Expected inputs
- Target project files, README, examples, tests, scripts, and CI configuration.
- Existing benchmark cases, prompt examples, screenshots, logs, or evaluation notes.
- Product goals, user journeys, acceptance criteria, and known failure cases.
- Previous audit reports or refactor plans if available.
Workflow
- Identify the product behavior that must stay reliable.
- Extract or propose representative golden cases.
- Define pass/fail criteria before changing code or prompts.
- Review existing tests, smoke checks, fixtures, examples, CI gates, and logs.
- Score the project with
scoring-rubric.md. - Produce an audit report using
audit-report-template.md. - Produce a refactor plan using
refactor-plan-template.md. - Recommend the smallest useful evaluation harness that can run repeatedly.
- Record validation results and validation limits honestly.
Five factors
- Quality Contract — The project defines what good output means in user-facing terms.
- Golden Cases — The project keeps representative examples, fixtures, and expected outcomes.
- Regression Loop — The project can detect whether a change breaks important behavior.
- Failure Taxonomy — The project names common failure modes and maps them to fixes.
- Release Gates — The project connects evaluations to CI, release notes, and go/no-go decisions.
Output format
Return:
- Selected evaluation scope and why.
- Current eval maturity scorecard.
- Missing golden cases and critical validation gaps.
- Proposed minimum evaluation harness.
- Regression and failure taxonomy plan.
- Release gate recommendations.
- Validation results or validation limits.
Example calls
Use the 5-factor-evals skill to audit this Agent project for golden cases, regression tests, failure taxonomy, and release gates.
Use the 5-factor-evals skill to add a repeatable evaluation plan before we refactor this RAG pipeline.
Use the 5-factor-evals skill as a secondary review after 12-factor-agents and 9-factor-rag.
Version record
v0.7.0: Added as a first-class evaluation and regression confidence Skill.