fastapi
- Repo stars 0
- Author updated Live
- Author repo skills-registry
- Domain
- AI
- Compatible agents
-
- Claude Code
- Cursor
- Cline
- Codex
- Windsurf
- Gemini CLI
- +20
- Trust score
- 88 / 100 · community maintained
- Author / version / license
- @tomevault-io · no license declared
- Token usage
- Lean
- Setup complexity
- Plug-and-play
- External API key
- Not required
- Operating systems
- Unspecified (assume cross-platform)
- Runtime requirements
- Python
- Permissions
-
- Read-only
- Write / modify
- Network behavior
- Local-only
- Install commands
- 26 variants
Profile is derived at build time from SKILL.md and install vectors. Subject to drift from author intent.
Heads up: 未限定 allowed-tools，默认拥有全部工具权限。
---
name: fastapi
description: > Use when this capability is needed. Validate input, call a service, return output. No business…
category: ai
runtime: Python
---
# fastapi output preview
## PART A: Task fit
- Use case: > Use when this capability is needed. Validate input, call a service, return output. No business logic. router = APIRouter(prefix="/sessions", tags=["sessions"]) @router.post("", statuscode=201, responsemodel=SessionResponse) runs entirely locally; runs on Python. Works with Claude Code, Cursor, Cline and 23 more..
- Inputs: target material, constraints, expected output, and acceptance criteria.
- Evidence boundary: follow “Route Handlers Are Thin / Dependency Injection / Lifespan for Startup and Shutdown” and do not present inference as author intent.
## PART B: Execution result
- **01** The card summarizes the use case; runtime output centers on “> Use when this capability is needed. Validate input, call a service, return output. No business logic. router = APIRouter(prefix="/sessions", tags=["sessions"]) @router.post("", statuscode=201, responsemodel=SessionResponse) runs entirely locally; runs on Python. Works with Claude Code, Cursor, Cline and 23 more.”.
- **02** When the source has headings, the agent prioritizes “Route Handlers Are Thin / Dependency Injection / Lifespan for Startup and Shutdown” so the result follows the author’s structure.
- **03** Typical output includes task judgment, concrete steps, required commands or file edits, validation, and follow-up options.
- **04** Risk context follows the fingerprint: read files, write/modify files; mostly runs locally; usually needs no extra API key.
## Running Rules
- read files, write/modify files; mostly runs locally; usually needs no extra API key.
- Validate with a small sample before expanding scope.
- Return the result, validation criteria, and next iteration options. Choose the trigger
The source does not require a stable slash command. After installation, invoke the skill by name and describe the task.
Provide inputs and boundaries
Name target files or source material, expected output, forbidden changes, and whether network or shell access is allowed. Permission fingerprint: read files, write/modify files.
Validate with a small run
Start with a small task and check whether the result follows “Route Handlers Are Thin / Dependency Injection / Lifespan for Startup and Shutdown”. Inspect diffs, logs, previews, or tests before expanding scope.
Review before delivery
Confirm the final output includes a concrete result, evidence, and next action. If it stays generic, tighten inputs, boundaries, and acceptance criteria.
---
name: fastapi
description: > Use when this capability is needed. Validate input, call a service, return output. No business…
category: ai
source: tomevault-io/skills-registry
---
# fastapi
## When to use
- > Use when this capability is needed. Validate input, call a service, return output. No business logic. router = APIRo…
- Use it when the task has clear inputs, repeatable steps, and validation criteria.
## What to provide
- Target material, scope, expected result, and forbidden changes.
- Whether network, commands, file writes, or external services are allowed.
## Execution rules
- Organize steps around “Route Handlers Are Thin / Dependency Injection / Lifespan for Startup and Shutdown” and keep inference separate from source facts.
- read files, write/modify files; mostly runs locally; usually needs no extra API key.
- Validate with a small sample before expanding the task.
## Output requirements
- Return the deliverable, key evidence, validation method, and next action.
- Mark missing information as unknown; do not invent commands, platforms, or dependencies. Evidence boundary and execution chain
The author source anchors workflow facts; repository files anchor sources and commands; Fluxly only adds fit, limitations, and quality judgment.
skill "fastapi" {
input -> user goal + target files + boundaries + acceptance criteria
context -> Route Handlers Are Thin / Dependency Injection / Lifespan for Startup and Shutdown
rules -> SKILL.md triggers / order / output contract
runtime -> Python | read files, write/modify files | mostly runs locally
guardrails -> usually needs no extra API key + small-sample validation + diff/log review
output -> copyable result + checklist + next iteration
}FastAPI Conventions
Route Handlers Are Thin
Validate input, call a service, return output. No business logic.
router = APIRouter(prefix="/sessions", tags=["sessions"])
@router.post("", status_code=201, response_model=SessionResponse)
async def create_session(
body: CreateSessionRequest,
service: SessionService = Depends(get_session_service),
) -> SessionResponse:
return await service.create(body.topic)Dependency Injection
All dependencies in app/core/dependencies.py. Never instantiate services inside route handlers.
@lru_cache
def get_settings() -> Settings:
return Settings()
async def get_session_service(
pool: asyncpg.Pool = Depends(get_db_pool),
settings: Settings = Depends(get_settings),
) -> SessionService:
return SessionService(pool=pool, settings=settings)Lifespan for Startup and Shutdown
@asynccontextmanager
async def lifespan(app: FastAPI):
app.state.db_pool = await asyncpg.create_pool(settings.database_url)
yield
await app.state.db_pool.close()
app = FastAPI(lifespan=lifespan)Do not use the deprecated @app.on_event("startup").
Response Model
Always declare response_model=SomePydanticModel. Never return raw dicts.
Middleware Order
Register in this order (FastAPI processes in reverse registration order):
- Correlation ID middleware (outermost)
- CORS middleware
- Rate limiting middleware
- Request logging middleware (innermost)
Global Exception Handlers
Register domain-to-HTTP mappings once in app/core/middleware.py:
@app.exception_handler(SessionNotFoundError)
async def handler(request: Request, exc: SessionNotFoundError):
return JSONResponse(status_code=404, content={"code": "session_not_found", "message": str(exc)})Exception Hierarchy
Define in app/core/exceptions.py:
class AppError(Exception):
"""Base exception for all application errors."""
class SessionNotFoundError(AppError): ...
class ReasoningValidationError(AppError):
def __init__(self, reason: str) -> None:
self.reason = reason
super().__init__(reason)
class InvalidEventTypeError(ReasoningValidationError): ...- Services raise domain exceptions; global handlers map them to HTTP — never per-route
- Never raise
HTTPExceptioninside a service layer - Never swallow exceptions silently with bare
except:
Source: cheneeheng/agent-skills — distributed by TomeVault.
Decide Fit First
Design Intent
How To Use It
Boundaries And Review