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Backfill Feature

Agent skill
1 skill

Use when the user says "/backfill-feature", "backfill the ADR", "this feature has no ADR", "I need to document what's already there before I change it", or wants to capture an existing feature's architectural rationale and behaviour before modifying it. Reads the relevant code, drafts a reverse-engineered ADR (what is, why it probably looks like this) + Gherkin spec (current behaviour) + characterization tests that lock the current behaviour green. Hands off to /plan-change so the actual change can be layered on top of a documented, tested baseline.

Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI

Supported by the Atlas install prompt. Skill-specific requirements vary.

Skill stats

Skills1CategoryGeneralStars0

About this skill

Use when the user says "/backfill-feature", "backfill the ADR", "this feature has no ADR", "I need to document what's already there before I change it", or wants to capture an existing feature's architectural rationale and behaviour before modifying it. Reads the relevant code, drafts a reverse-engineered ADR (what is, why it probably looks like this) + Gherkin spec (current behaviour) + characterization tests that lock the current behaviour green. Hands off to /plan-change so the actual change can be layered on top of a documented, tested baseline.

Quick start

  1. Copy the install prompt. Use the green button above this README.
  2. Send it to your agent. Paste it into your coding agent’s chat and send.
  3. Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
Review the source before using this skill

This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.

Automated security scan: Partial

Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.

0 potential findings · Scanned 11/3/2026 · Scanner 0.2.1

Content SHA-256: 64878705a215f225a7c028be373b9e48c9515cd9ec35933e25b5d34d7adbc4fc

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About this listing

Category
General
Reported license
MIT
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Backfill Feature | Agent Skills Atlas