fastapi SKILL.md skillA

fastapi from ericrisco/rsc-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ericrisco/rsc-harness/fastapi@git:20260729.3ecb845

Pins git:20260729.3ecb845 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ericrisco/rsc-harness
Path
skills/fastapi/SKILL.md
Versions recorded
5
Latest version
git:20260729.3ecb845, committed Jul 29, 2026
First version recorded
Jun 1, 2026
Size
20,056 bytes
Repository stars
236
License
MIT

Use when building, reviewing, testing, securing or shipping a FastAPI / async Python service — routers, Pydantic v2 schemas, dependency injection, async SQLAlchemy 2.0, OAuth2/JWT, ASGITransport tests, production wiring. NOT language-level Python or packaging (that is `python`), NOT engine-level SQL (that is `postgresdb`), NOT framework-agnostic REST contracts (that is `api-design`).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# FastAPI & modern Python services

The single authoritative skill for building, reviewing, testing, securing and shipping an
async FastAPI service on Python 3.12+. The mental model: **the app is a thin async HTTP
layer over typed dependencies, a service/repository core, and explicit DB sessions. Routes
validate and delegate; they never own business logic, raw SQL, or secrets.**

Pinned stack: Python 3.12+, FastAPI 0.136+, Starlette 1.0+ (FastAPI 0.136 requires it;
avoid <1.0.1, GHSA-86qp-5c8j-p5mr), Pydantic v2 (2.7+) + pydantic-settings 2.x,
SQLAlchemy 2.0 async, Alembic 1.13+, asyncpg 0.30 / psycopg 3, httpx 0.28+,
pytest 8 + pytest-asyncio 1.0+ (`asyncio_mode=auto`), ruff 0.7+, mypy 1.13+ strict,
uv 0.5+, uvicorn 0.32+ / gunicorn 23+ + uvicorn-worker 0.3+, PyJWT 2.10+, argon2-cffi 23+,
pip-audit 2.7+, PostgreSQL 16. (All lower bounds; install the latest in each line.)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ericrisco/rsc-harness/fastapi@sha256:38b5cc80928d686e

The line at the top of this page pins the label git:20260729.3ecb845, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hs3rq6raormvuowl.svg)](https://markdownregistry.com/a/art_hs3rq6raormvuowl)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jun 1, 2026 and Jul 29, 2026, about one every 14 days.

versioncommittedcommitsizeaudit
git:20260729.3ecb845 latest2026-07-29 3ecb845 20,056 BA view · diff
git:20260615.5ea6bc32026-06-15 5ea6bc3 22,172 BA view · diff
git:20260610.c7292cf2026-06-10 c7292cf 22,078 BA view · diff
git:20260602.d5545f42026-06-02 d5545f4 21,586 BA view · diff
git:20260601.89765982026-06-01 8976598 21,492 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (20056 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ericrisco/rsc-harness · 236 stars · license MIT · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hs3rq6raormvuowl
GET https://markdownregistry.com/api/v1/resolve?ref=ericrisco/rsc-harness/fastapi
GET https://markdownregistry.com/api/v1/blob/38b5cc80928d686e6fd658387bf0a4cd361a38d52c41647e0fb51decfd1f644d

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in ericrisco/rsc-harness

Other files named fastapi

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martineserios/thebrana · system/skills/acquired/fastapi/SKILL.md · FastAPI best practices + Pydantic. Use when building or reviewing FastAPI APIs.
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