Prompt alignment audit

Skill itzTiru/claude-code-skills-fable5/prompt-alignment-audit

Use when reviewing, auditing, or optimizing any LLM prompt (system prompt, extraction prompt, template) against provider guidance — when a prompt underperforms, after a model upgrade or version switch, before shipping a new production prompt, or when asked whether a prompt follows current Anthropic/OpenAI/Gemini best practices. Also use when asked to "check my prompt", "improve this prompt", or fetch the latest prompting guidance (--refresh).From its SKILL.md

Install

npx -y skills add itzTiru/claude-code-skills-fable5 --skill prompt-alignment-audit

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SKILL.md

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Prompt Alignment Audit

Audit a prompt against the current, model-version-specific recommendations of its provider, then produce a citation-backed report and a fully justified rewrite. A rewrite is a hypothesis: prove it with the project's eval harness when one exists; otherwise state plainly that confidence is compliance-based.

Never edit a production prompt file without explicit user approval.

Cost policy (non-negotiable)

All heavy reading — doc research, prompt-file reading, per-dimension audits — is done by Sonnet subagents (model: "sonnet") returning compact structured findings. The orchestrator never reads raw provider docs and never pastes full documents into context.

Phase 1 — Discover

Bare invocation: scan the project for prompts and model IDs. Grep for model strings (claude-, gpt-, gemini-, o3, o4), prompt/controller files, template files. Audit everything found.
With an argument: audit only that file or pasted prompt (ask for the target model if not stated and not inferable).
Detect an eval harness: ground-truth files, accuracy runners, make accuracy/eval targets. Note it for Phase 5.
Capture the API configuration around each prompt (extended thinking, structured output/tools, caching, temperature) from the calling code — audit agents need it to judge config-dependent rules.
No prompts found → say so and ask for a path. Never guess.

Phase 2 — Rubric freshness

Rubrics live in rubrics/<provider>.md, sectioned by model family, every rule carrying source: and verified: fields.

For each detected provider+model: if its rubric section is missing or verified: is older than 7 days, refresh it before auditing.
--refresh (or the user asking for latest guidance) → refresh relevant sections regardless of dates.
Refresh = dispatch one Sonnet research agent per provider: Context7 first (official docs), Exa second (model-specific prompting guides, release notes, migration guides). The agent rewrites that rubric section in place — same entry format, new verified: date, real source URLs. Official docs outrank secondary sources; conflicts are kept and flagged, not silently resolved.
Research tools unreachable → proceed on the existing rubric and stamp the report with a staleness warning.
Unknown model ID → use the nearest family section, flag the substitution, attempt a live lookup for the new model.

Phase 3 — Audit fan-out

Dispatch parallel Sonnet subagents, one per dimension in references/audit-dimensions.md (structure/tagging, instruction placement, system-prompt usage, output-format alignment, examples, caching layout, model-specific features, anti-patterns). Each agent receives: the prompt text, the relevant rubric section, its single dimension brief — and returns findings in this exact shape, nothing else:

{rule, citation, severity: critical|major|minor, location, current_text, issue, suggested_fix}

Phase 4 — Synthesize + rewrite

Merge findings, dedupe overlaps, rank by severity. Write the rewritten prompt following references/rewrite-rules.md: every change maps to a named rubric rule; domain content (definitions, legal terms, schema field names, business rules) is preserved verbatim. Then dispatch one adversarial Sonnet agent to compare old vs new for meaning drift; fix anything it catches before showing the user.

Phase 5 — Verify + report

Eval harness exists → offer to run old-vs-new and include scores in the report.
No harness → the report states its confidence is compliance-based, in those words.
Deliver the report per references/report-template.md: severity-ranked findings table with citations, then the justified side-by-side diff.
Apply changes to source files only after the user approves.

Red flags — stop and correct

Thought	Reality
"The rubric is 9 days old, close enough"	7 days means 7. Refresh first.
"I'll just read the provider docs myself"	Sonnet agents read docs. You read findings.
"This rewrite is obviously better, apply it"	Nothing is applied without user approval.
"Compliance = better performance"	Only an eval run proves better. Say which one you have.
"I'll tidy the domain wording while I'm at it"	Domain content is verbatim. Structure changes only.
"Generic Claude advice covers sonnet-4-6"	Guidance is per model version. Use the right section.