# Fullstack Slice

> Use for features/bugs that require coordinated changes in BOTH the .NET backend repo and React frontend repo. Keep changes minimal, run tests in both repos, and document contracts.

- Skill: `askaret/fullstack-slice` (Agent Skill)
- Install (CLI): `npx skillmds@latest add askaret/fullstack-slice`
- Raw SKILL.md: https://api.skillmd.com/api/skills/askaret/fullstack-slice/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: askaret (https://skillmd.com/u/askaret)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/askaret/fullstack-slice

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Rules:
- Start by locating the API contract boundary (DTOs, endpoints, OpenAPI/Swagger, client code).
- Make backend change first, keeping backward compatibility if feasible.
- Update frontend to match contract changes.
- If contract changed: update documentation and any generated clients/types.

Verification:
- Backend: run repo standard test command (default: dotnet test).
- Frontend: run repo standard commands (default: npm test and npm run build or equivalent).
- Provide a short manual verification checklist.

Finish with:
- Summary of changes
- Commands run + results
- Any risks / follow-ups