nextjs-fastapi-implementor
Full-stack TDD implementation for Next.js 16 + FastAPI projects.
Skill by wtsi-hgi
Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
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About
Use cases: frontend, backend, testing, agent-building
Reviews
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Permissions
What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
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Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/nextjs-fastapi-implementor
What's inside
- Skill name
nextjs-fastapi-implementor- Description
- Full-stack TDD implementation for Next.js 16 + FastAPI projects. References implementation-principles, nextjs-fastapi-conventions, testing-principles, and agent-conduct. Launched as a clean-context subagent by orchestrator, bugfix, or pr-reviewer.
- License
- MIT
- Instructions
- 40 lines in SKILL.md · view on GitHub
Files (2)
- SKILL.md
- openai.yaml · agents/
SKILL.md (first lines)
# Next.js + FastAPI Implementor Skill Read and follow **agent-conduct**, **implementation-principles**, **testing-principles**, and **nextjs-fastapi-conventions** before starting. You are an implementation subagent with clean context. Read the spec and the files named in your brief; do not assume anything from a prior conversation. ## Stack-Specific TDD Steps ### Backend (Python) - Tests: pytest + httpx `AsyncClient` + `ASGITransport` in `backend/tests/`. - Targeted test: `cd backend && python -m pytest tests/ -v -k <test_name>` - Lint with: `cd backend && ruff check --fix . && ruff format .` ### Frontend (TypeScript) - Tests: Vitest in `frontend/tests/`. - For visual styling changes, write a failing Playwright/perceptual test when jsdom cannot prove the user-visible result. - Test command: `cd frontend && pnpm test` - Lint with: `cd frontend && pnpm lint && pnpm format` ### Contract Tests When adding/modifying an endpoint, follow the contract flow from nextjs-fastapi-conventions: Pydantic, then Zod, then contract test, then `backendJson()`. Ensure both schemas agree on field names, types, and constraints. ### Frontend Design For UI tasks, also read and follow the **frontend-design** skill. For Tailwind v4 theming and perceptual UI tests, follow the styling/testing rules in **nextjs-fastapi-conventions** before changing selectors or tokens.
From wtsi-hgi/agentskills, MIT.
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Orchestrates standalone or caller-batched bug fixes via implementor and reviewer subagents using TDD.
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implementation-principles
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Shared cross-language delivery workflow and guidance for implementing the simplest sufficient solution, maximizing reuse of existing code, fixing root causes…
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orchestrator
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Orchestrates implementation, review, and user-path verification of phase plans via subagents.
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final-response
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Remove filler, repetition, process narration, fake enthusiasm, and AI-sounding prose from every chat message, and end each one with a "Your next action" line.
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agent-conduct
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Mandatory safety rules for all agents.
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go-reviewer
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Review Go implementations against spec acceptance tests.
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go-conventions
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Shared conventions for Go projects.
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deliver
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Only when explicitly invoked, take the requested change and every resulting branch, including incidental fixes, through PR review and verified user merges.
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phase-creator
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Creates phase plan documents from a spec.md Implementation Order.
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go-test-strength
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Prove a Go package's tests catch defects, by injecting faults one at a time and requiring the suite to fail.
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frontend-design
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Create distinctive, production-grade frontend interfaces that avoid generic AI aesthetics.
SkillBFreshness: B★ 1Claude Code +9 - 0.547score
code-smells
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Named code smell baseline for reviewing changed code, from Fowler's Refactoring chapter 3.
SkillBFreshness: B★ 1Claude Code +9
Signals
- Stars
- 1
- Forks
- 0
- Open issues
- 0
- Last commit (this folder)
- Aug 20, 2026 (2 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/wtsi-hgi/agentskills
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from wtsi-hgi
- 0.592score
implementation-principles
wtsi-hgi
Shared cross-language delivery workflow and guidance for implementing the simplest sufficient solution, maximizing reuse of existing code, fixing root causes…
SkillAFreshness: A★ 1Claude Code +9 - 0.592score
bugfix
wtsi-hgi
Orchestrates standalone or caller-batched bug fixes via implementor and reviewer subagents using TDD.
SkillAFreshness: A★ 1Claude Code +9 - 0.587score
final-response
wtsi-hgi
Remove filler, repetition, process narration, fake enthusiasm, and AI-sounding prose from every chat message, and end each one with a "Your next action" line.
SkillAFreshness: A★ 1Claude Code +9 - 0.587score
orchestrator
wtsi-hgi
Orchestrates implementation, review, and user-path verification of phase plans via subagents.
SkillAFreshness: A★ 1Claude Code +9 - 0.586score
agent-conduct
wtsi-hgi
Mandatory safety rules for all agents.
SkillAFreshness: A★ 1Claude Code +9 - 0.584score
go-conventions
wtsi-hgi
Shared conventions for Go projects.
SkillAFreshness: A★ 1Claude Code +9
Cite this page
nextjs-fastapi-implementor skill. Agent Mart. https://agentmart.dev/skills/wtsi-hgi-nextjs-fastapi-implementor (last updated 2026-10-24)