# Change Control

> Use whenever the user changes, upgrades, or corrects requirements after initial intake.

- Skill: `hashgraph-online-awesome-codex-plugins/change-control` (Agent Skill)
- Install (CLI): `npx skillmds@latest add hashgraph-online-awesome-codex-plugins/change-control`
- Raw SKILL.md: https://api.skillmd.com/api/skills/hashgraph-online-awesome-codex-plugins/change-control/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Productivity
- Author: hashgraph-online (https://skillmd.com/u/hashgraph-online-awesome-codex-plugins)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/hashgraph-online-awesome-codex-plugins/change-control

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# Change Control

This skill records requirement changes, calculates impacted artifacts, marks stale downstream contracts, invalidates approvals, and regresses to the earliest impacted stage.

## Input Artifacts

- User change request
- `00-stage.json`
- `00-artifact-registry.json`
- Existing approved artifacts

## Output Artifact

- `docs/full-stack-development/requirements/<feature-slug>/changes/<change-id>-change-request.md`

## Required MCP Tool

- `plan_change_impact`
- `mark_artifacts_stale`
- `plan_requirement_change`
- `review_stage_gate`

## Hard Stops

- Do not directly edit code after a requirement change.
- Do not keep old visual approval when IA, interaction, state, visual, frontend, API, or product contracts changed.
- Do not keep implementation approval when behavior or engineering contracts changed.

## Pressure Test Responsibility

- Role changes regress to product scope.
- Field/action/state changes regress to IA, interaction, and state.
- API/auth changes regress to backend/API/frontend contract.
- Acceptance command changes regress to verification.

## Next Gate

- Re-run `review_stage_gate` for the regressed stage before design or implementation continues.