# Layer QC

> Run quality checks on vector or raster layers before downstream workflows.

- Skill: `georetina/layer-qc` (Agent Skill)
- Install (CLI): `npx skillmds@latest add georetina/layer-qc`
- Raw SKILL.md: https://api.skillmd.com/api/skills/georetina/layer-qc/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: georetina (https://skillmd.com/u/georetina)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/georetina/layer-qc

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# Layer QC

## When To Use

- Use after ingestion and before modeling or map publication.
- Use when layers are assembled from multiple teams or ETL jobs.
- Use when analysis quality is sensitive to geometry and attribute integrity.

## Workflow

1. Verify geometry validity and detect null or empty features.
2. Check required fields, types, and missing-value rates.
3. Validate extents, resolution, and expected feature counts.
4. Detect duplicates, outliers, and inconsistent category values.
5. Emit a pass/fail summary with remediation actions.

## Guardrails

- Do not continue silently with invalid geometry on critical paths.
- Flag data drift when schema or counts differ from expected baselines.
- Keep QC outputs machine-readable for replay and automation.