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auditing-warehouse-source-coverage

Audit already-implemented Data warehouse import sources for endpoints, schemas, and tables the vendor's API offers but we never wired up. Use when asked whether a source is missing endpoints, to find new endpoints a vendor has added since a source was built, to refresh COVERAGE_GAPS.md, to prioritize which source to deepen next, or to check coverage before an integration review. Covers dumping our real endpoint inventory credential-free, ranking sources by production adoption, diffing against vendor OpenAPI/GraphQL specs, and recording findings. Not for implementing a source (use implementing-warehouse-sources), adding a vendor API version (warehouse-source-new-version), or writing source docs (documenting-warehouse-sources).

72

Quality

91%

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The risk profile of this skill

SKILL.md
Quality
Evals
Security

Quality

Content

81%Weight 40%Scale 1-5

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

An unusually strong operational skill: the multi-step workflow is clearly sequenced with genuine validation feedback loops, and hard-won operational knowledge (costs, gotchas, measured prevalence) fills every section. The gaps are minor: a few editorial sentences could be trimmed, the Python extraction is a labeled sketch rather than complete code, and the workflow fan-out design notes are not backed by a bundled script or schema.

Suggestions

Trim the editorial aphorisms (e.g. "Ten spec-verified sources beat 200 guesses", "Small endpoint, large unlock") to pure instruction, and frame the dated spec-URL table as periodically refreshed rather than a fixed "worked on 2026-07-26" list.

Provide the long-tail workflow as a bundled script or a concrete output-schema skeleton in scripts/ or references/ instead of prose design notes, and complete the Python extraction sketch ("Sketch") into a runnable script that handles the one- and two-segment nesting cases it describes.

Ship the referenced scripts/dump_source_inventory.py (currently missing from the bundle, making the link dangling) and consider moving the theme-statistics list and vendor spec table into a one-level-deep reference file.

DimensionReasoningScore

Conciseness

Dense and competence-assuming throughout (no explanation of OpenAPI, GraphQL introspection, or basic tooling), but includes editorial aphorisms ("Ten spec-verified sources beat 200 guesses", "Small endpoint, large unlock", "A gap only matters in proportion to who hits it") and a dated spec table ("Specs that worked on 2026-07-26") that is time-sensitive without a refresh/deprecated framing. Minor trims possible; no padding.

4 / 5

Actionability

Mostly copy-paste-ready: the inventory dump command, the SQL adoption-ranking query, the curl bulk URL check, and the TODO grep are all executable, but the Python extraction is explicitly labeled a "Sketch" and the long-tail workflow — the core of the method — is conveyed as design notes rather than a runnable script or output schema.

4 / 5

Workflow Clarity

A clear six-step sequence (dump inventory → rank by adoption → diff against spec → judge gaps → find cross-source patterns → record) with explicit validation checkpoints and feedback loops throughout: strip stdout warnings, "Bulk-check the cited doc_urls", "Spot-check a handful of findings end to end", "Make 'could not verify' an explicit, blessed answer", and "Confirm column names against system.information_schema.columns first". The batch fan-out includes output validation, so the batch-operation cap does not apply.

5 / 5

Progressive Disclosure

Well-sectioned single file with clear headers and a Related-skills map, but the bundle contains no references/, scripts/, or assets/ directories, so the one cited bundle path (scripts/dump_source_inventory.py) is dangling, and long inline material (the 8-vendor spec table, the theme statistics) could live in reference files.

4 / 5

Total

17

/

20

Passed

Description

100%Weight 40%Scale 1-5

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

An exemplary description: it states a concrete capability set, provides five natural explicit triggers, and routes away from three named sibling skills. It is long but every clause is functional — no padding or over-claims.

DimensionReasoningScore

Specificity

Enumerates multiple concrete, comprehensive actions covering the entire audit pipeline ("Audit already-implemented Data warehouse import sources for endpoints, schemas, and tables", "dumping our real endpoint inventory credential-free, ranking sources by production adoption, diffing against vendor OpenAPI/GraphQL specs, and recording findings") with no gaps in action coverage.

5 / 5

Completeness

Explicitly answers both what ("Audit already-implemented Data warehouse import sources for endpoints, schemas, and tables the vendor's API offers but we never wired up") and when (five concrete "Use when..." triggers), going beyond the anchor with an explicit "Not for..." routing clause.

5 / 5

Trigger Term Quality

Covers the natural phrasings users would actually say — "whether a source is missing endpoints", "find new endpoints a vendor has added since a source was built", "to refresh COVERAGE_GAPS.md", "prioritize which source to deepen next", "check coverage before an integration review" — with synonym-level coverage (missing endpoints / new endpoints / coverage).

5 / 5

Distinctiveness Conflict Risk

A clear niche (auditing already-implemented sources for unwired endpoints) with minimal conflict risk, actively disambiguated from three named sibling skills via "Not for implementing a source (use implementing-warehouse-sources), adding a vendor API version (warehouse-source-new-version), or writing source docs (documenting-warehouse-sources)".

5 / 5

Total

20

/

20

Passed

Validation

87%

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

Validation — 14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

relative_links

Relative link issues: 1 missing, 1 suspicious

Warning

referenced_paths_exist

Referenced path issues: 2 missing

Warning

Total

14

/

16

Passed

Repository

PostHog/posthog

Path

.agents/skills/auditing-warehouse-source-coverage/SKILL.md

Reviewed

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