fastapi-router-py
by microsoftfastapi-router-py is a FastAPI routing scaffold for CRUD endpoints, auth dependencies, response models, and HTTP status codes. It helps Backend Development teams create consistent routers from a template instead of hand-writing each endpoint. Use it when you need predictable structure, reusable patterns, and less guesswork for new REST resources.
This skill scores 78/100, which means it is a solid listing candidate for directory users. It gives agents a clear trigger, a reusable FastAPI router template, and enough operational guidance to reduce guesswork versus a generic prompt, though it is still somewhat template-driven rather than a complete end-to-end workflow.
- Explicit use cases and trigger language for FastAPI router creation, CRUD endpoints, and authenticated routes.
- Concrete template plus placeholder mapping in assets/template.py and SKILL.md makes the install actionable for agents.
- Shows implementation patterns for auth dependencies, response models, HTTP status codes, and integration steps.
- No install command and no supporting reference files, so adoption requires users to apply the template manually.
- Evidence is concentrated in a single template-centric workflow, so it may be less helpful for unusual project structures or advanced routing patterns.
Overview of fastapi-router-py skill
fastapi-router-py is a FastAPI routing scaffold for creating consistent API routers with CRUD endpoints, auth dependencies, response models, and status codes. It is best for Backend Development teams that want a reusable router pattern instead of hand-writing each endpoint from scratch.
The main job-to-be-done is to turn a resource name and a few app-specific choices into a working router file with the right FastAPI conventions already in place. The fastapi-router-py skill is most useful when you need predictable endpoint structure, not a generic prompt that may invent patterns your codebase does not use.
What fastapi-router-py is best for
Use it for new REST resources, admin APIs, and refactors where many routers should look the same. It fits cases where you already have service classes, Pydantic models, and an auth layer, and you want the router layer to stay thin.
What makes it different
The repository is opinionated about router shape: it uses a template file, explicit placeholders, optional vs required auth, response models, and status codes. That makes fastapi-router-py more practical than a vague “generate FastAPI CRUD” prompt because it pushes you toward a repeatable file layout and explicit dependency injection.
When it is a good install decision
Install fastapi-router-py if your team values consistent endpoint generation, quick onboarding for new resources, and fewer style mismatches between routers. Skip it if your FastAPI app is tiny, highly custom, or does not follow a service/model separation.
How to Use fastapi-router-py skill
Install fastapi-router-py
Use the standard skills manager command:
npx skills add microsoft/skills --skill fastapi-router-py
After install, read SKILL.md first, then open assets/template.py. Those two files show the real router pattern faster than searching the whole repository.
Turn your goal into a usable prompt
The fastapi-router-py usage works best when you provide concrete inputs, not just “make a CRUD router.” Include:
- resource name in PascalCase and snake_case
- plural route name
- whether auth is optional or required
- list, create, update, delete operations needed
- any route prefix, tags, or naming rules from your project
Example prompt shape:
“Use fastapi-router-py to create a Project router. Match our app style, use required auth for write endpoints, optional auth for reads, expose GET /projects, POST /projects, PATCH /projects/{id}, and DELETE /projects/{id}, and keep response models aligned with our existing Project, ProjectCreate, and ProjectUpdate schemas.”
Read these files first
Start with assets/template.py because it shows placeholder usage, dependency injection, and the expected router skeleton. Then inspect any path references in SKILL.md that point to where routers, models, and services should live in your app. If your repo differs, map the template onto your actual package paths before generating code.
Practical workflow for better output
- Decide the resource contract first: fields, verbs, and auth rules.
- Confirm your service layer already exists or will be generated separately.
- Use the template to align names and imports before asking for code.
- Check the generated router against your project’s route prefix, tags, and status code conventions.
fastapi-router-py skill FAQ
Is fastapi-router-py only for new FastAPI projects?
No. It is useful for existing apps too, especially when you need a new router that matches an established pattern. The value is highest when your app already uses services, models, and dependency injection.
Do I need the skill if I can write a FastAPI prompt myself?
If your prompts already produce correct routers every time, maybe not. The fastapi-router-py skill adds more value when you want fewer misses on auth wiring, response models, status codes, and folder placement.
Is fastapi-router-py beginner-friendly?
Yes, if you understand basic FastAPI concepts like APIRouter, dependencies, and Pydantic models. It is less helpful if you are still learning FastAPI fundamentals, because the skill assumes you can tell whether the generated router fits your architecture.
When should I not use fastapi-router-py?
Do not use it for highly custom endpoints, unusual data-access patterns, or apps without a clear router/service split. In those cases, a general FastAPI design prompt may be a better fit than the fastapi-router-py skill.
How to Improve fastapi-router-py skill
Give the skill a complete resource brief
The biggest quality gain comes from specifying the resource shape up front. Tell it the entity name, fields, required permissions, and whether reads and writes should use different auth rules. That reduces placeholder drift and keeps the router aligned with your real API.
Match your project conventions explicitly
If your codebase uses a specific prefix, tags format, or module path, say so. fastapi-router-py can follow a template well, but it cannot infer whether your app expects /api, src/backend/app/routers/, or a different dependency pattern unless you provide that context.
Watch for the common failure modes
The most common issues are mismatched imports, incorrect pluralization, and generated endpoints that assume models or services exist without confirming them. Review the output for:
- model names and field aliases
- auth dependency choice: optional vs required
- response_model declarations
- status codes for create and delete operations
Iterate from router to integration
After the first output, improve the prompt by adding one concrete constraint at a time: pagination rules, error handling style, or service method names. For fastapi-router-py usage, small corrections usually work better than asking for a full rewrite, because the skill is strongest when refining an existing router pattern rather than inventing one.