Skill Auditor

Skill Auditor

In one line: it finds where our skills are missing evals or guidance that the platform actually supports, and proposes the fix — it never changes anything on its own.

How it works, plainly: scripts list every skill and its evals, compare them against a per-product checklist (taxonomies/.yaml) and the SDK's own API-availability data, and print what's missing. A human decides what to fix.

What you touch when (the maintenance answer):

| You do this | You update | |---|---| | Add a new platform to an existing product (e.g. sparkscan-vue) | Nothing — platforms are auto-discovered by directory name | | Add an eval for a feature already covered | Nothing — tagged evals are picked up automatically | | Add an eval for a brand-new capability | One line in that product's taxonomies/*.yaml (or let audit taxonomy regenerate it) | | Add a whole new product family | One taxonomies/.yaml + one line in manifest.json |

You do not re-edit the taxonomy every time you touch evals. The taxonomy is the "what should exist" checklist; evals are "what does exist." They only meet when you introduce a genuinely new capability.

---

It audits along three layers, per - skill:

1. Platform truth — what the platform actually supports. The expected surface is the

native API minus the documented exclusions in the SDK repo's docs/api_availability/ data, enriched with public-docs sections and sample-app usage. Platforms genuinely diverge; a capability absent on a platform is not a defect — an undocumented or untested capability that the platform supports is.

1. Eval coverage — does every supported edge case have an eval? Measured by

scripts/coverage_matrix.py against the product taxonomy.

1. Skill quality — is each skill the best version of itself for its customers?

Missing gotcha warnings, guidance buried in references that belongs frontloaded, claims contradicting the platform API, and improvement patterns worth transferring from a sibling skill (transfer the pattern, not the content).

Sibling-parity differences are hints feeding layer 3 as questions, never failures. Never recommend "make platform X match platform Y" without first checking platform X's actual API surface.

Maintenance model

The taxonomy is regenerated, not hand-edited. taxonomies/.yaml is the list of capabilities checked across a product's platforms — but treat it like a lockfile, not a hand-kept document. audit taxonomy derives it from the sources of truth (products.json / features.json, doc sections, samples, api_availability exclusions) and proposes a delta; a human blesses the delta. Steady state when the SDK or docs change: re-run audit taxonomy, review the proposed diff, commit. The human owns blessing the delta, not keeping the list current by hand. (The seed taxonomies in this repo are hand-written pilots until the mining step is built — see the caveat in audit taxonomy.)

Discrepancies are detected, truth-verified, then confirmed — never auto-applied. The flow is always propose-and-confirm:

1. Cheap signal: sibling diff / coverage matrix surfaces "platform X has Y, platform Z

doesn't."

1. Verify against platform truth (layer 1) BEFORE asking: does Z actually support Y? If

yes → real gap, worth aligning. If no → legitimate divergence, record it as an excluded_platforms entry so it stops surfacing. Parity is never the goal in itself — coverage of each platform's real capability is.

1. Ask the human which verified gaps to fill; draft the fix for review; never commit

silently.

1. Never commit unverified platform code. A drafted fixture or reference snippet is

only committable after it compiles against the resolved real Scandit SDK (the fix-verification gate in audit evals / references/eval-conventions.md). Where that build is too heavy to run (Kotlin, Swift), the auditor proposes the code as UNVERIFIED and hands it to skill-creator to build in a local sample app — it does not write the fixture itself. Finding gaps is the auditor's job; vouching for a fix requires a build.

So "put platforms on par" is the outcome of a confirmed, truth-checked decision, not an automatic rule.

Sources

All external locations come from sources.yaml (committed registry) overlaid with sources.local.yaml (machine-local checkout paths, gitignored — see sources.local.yaml.example). Never invent or guess a URL or path; if a needed source is not in the registry, report "source missing from manifest" instead.

Resolution per repo: local path: if configured (READ-ONLY — record HEAD SHA + branch into provenance, warn if dirty or not on the default branch, never fetch/checkout/mutate) → cached shallow clone for public repos (~/.cache/scandit-skill-auditor/) → for private sources with no path, ask the user once and write sources.local.yaml; in CI, skip the mode and say so visibly.

When entering a source repo, read its own navigation aids first (CLAUDE.md, AGENTS.md, commands.md, bundled skills) instead of raw-searching it.

Samples: prefer checkouts of the public datacapture-*-samples repos — they reflect released behavior, which is what evals target. The copies inside the SDK monorepo track develop; use them only for what's-coming / API-surface questions.

Modes

Dispatch on what the user asks for. Run scripts from the repo root with python3.

audit routing

Run scripts/lint_structure.py and report only the routing: findings: skills missing from the data-capture-sdk handoff table, and table rows pointing at skills that don't exist. These are always real defects — the router silently falls back to "no skill exists" for unrouted skills. Offer to fix the table directly (follow the existing row format, grouped by product).

The script only checks the backticked table. Afterwards, read the router's prose for product+platform claims the script can't see — especially the Step 3 fallback examples ("no skill exists for X on Y"): each cited combo must still be absent from skills/. Prose examples go stale exactly when a new skill lands (happened with barcode-capture-ios in PR #48).

audit structure [product-prefix]

Run scripts/lint_structure.py [--prefix ]. Frontmatter and routing findings are defects. Sibling-parity findings are review candidates: for each, check layer 1 before judging — if the platform supports the feature (per api_availability exclusions and features.json), the missing file/eval is a real gap; if not, it's expected divergence and should be recorded as an excluded_platforms entry in the product taxonomy so it stops surfacing. Product prefixes and parity exemptions live in manifest.json.

audit evals

1. Run scripts/coverage_matrix.py taxonomies/.yaml. If no taxonomy exists yet,

run audit taxonomy first.

1. For each gap, triage: real gap (platform supports it) / platform exclusion (record it

in the taxonomy) / not worth testing (justify — an eval per API setter is noise).

1. Rank real gaps by evidence: a feature backed by docs ∧ sample ∧ support signals

outranks one backed by a single source.

1. For top gaps, draft evals. Often the fastest path is porting a sibling platform's eval

for the same feature — re-target the prompt and APIs, don't copy assertions verbatim. Follow the conventions in references/eval-conventions.md. Match the per-product eval file layout the siblings use; put new evals in the matching evals/*.json file.

1. Fix-verification gate (HARD RULE). Any fixture or reference code snippet you write

must be compiled against the resolved real Scandit SDK before commit — string/semantic evals do not catch hallucinated APIs or wrong-language code (Java-style Kotlin shipped once exactly this way). Per references/eval-conventions.md: where a cheap deps-resolved gate exists (Flutter analyze, TS tsc against the installed @scandit/* pkg, .NET dotnet build, Cordova node --check + export check) run it and require a pass; where the toolchain is heavy (Kotlin+gradle+Android SDK, Swift+xcodebuild) DO NOT bare-compile and DO NOT commit — stay audit-only for that platform and hand the proposed code to skill-creator to build in a local sample app. The gate is anti-hallucination only; runtime behaviour is QA, not the auditor.

1. Once evals carry explicit tags, tags are the source of truth and the taxonomy

match patterns only catch new untagged evals.

audit consistency

Judgment pass over sibling skills (validated mode — high signal). Fan out subagents in parallel, one per platform pair or per platform against a shared checklist, comparing SKILL.md + references. Report only semantic divergence, never legitimate platform differences (different APIs, naming conventions, lifecycle models are fine). Look for:

• Product-level claims that disagree (capabilities, limits, migration scope, version

guidance) — e.g. one platform calling a migration "light" while a sibling documents breaking changes. Verify against platform truth before recommending a fix.

• Gotchas/warnings present on one platform whose analogue exists but is undocumented

on another (init-order footguns, anti-pattern warnings, permission timing).

• Setup-checklist completeness drift.
• Guidance placement: critical content buried in references on one platform but

frontloaded on another.

For each finding: severity (high = could mislead a user), the evidence on both sides, and the concrete fix. Verify claims against layer-1 sources before proposing edits.

audit taxonomy

Seed or refresh taxonomies/.yaml. Mine sources in evidence order, fanning out parallel subagents (one per source class) that return structured feature candidates:

1. public_docs feeds (products.json, features.json) and per-mode doc sections —

every doc section is a candidate edge case.

1. Samples — each sample demonstrates a blessed workflow.
2. api_availability exclusions — populate excluded_platforms, and surface expired

exclusions (capability just became coverable → new candidate).

1. internal_docs RST corpus — real-world edge cases.

Propose the taxonomy delta to the user for blessing before writing; record provenance (source + SHA) in the file header. Prioritize: this is a curated edge-case list, not an API dump. Use taxonomies/sparkscan.yaml as the format reference.

audit all

Run routing + structure + evals + consistency for every product with a taxonomy, then delegate to the audit-common-skill-rules skill for the universal trust-rule check. Summarize per product, leading with required-feature gaps and high-severity consistency findings. State explicitly which products/modes were skipped and why (no taxonomy, source not configured) — silent truncation reads as full coverage.

Reporting

Lead with what's actionable: required gaps and high-severity divergences first, counts after, raw listings last (or in a file under the workspace if long). Every recommendation must cite its evidence (file, eval id, doc section, exclusion rule). The goal of every audit is a concrete next action — an eval to port, a warning to add, a table row to fix — not a score.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: Scandit
• Source: Scandit/skills
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.