fastapi-plugin

A FastAPI project add-on that supplies backend coding guidance, database migration support, and framework conventions. FastAPI is a Python framework for building web APIs, while the included tools cover SQLAlchemy and Alembic database work.

In plain words
What is it for?
Use it when a project depends on FastAPI to get endpoint and backend implementation help, API conventions, SQLAlchemy patterns, and Alembic migration assistance.
Why use it?
It provides the framework-specific agents and rules needed for a FastAPI backend, instead of treating the project as generic Python code. It also adds a database phase for reviewing and applying schema changes.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add AratKruglik/claude-sdlc
agentmods
npx agentmods add plugins/aratkruglik/claude-sdlc/fastapi-plugin
Clone the repo
git clone --depth 1 https://github.com/AratKruglik/claude-sdlc

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

fastapi-plugin scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/fastapi-plugin/.claude-plugin/plugin.json · 27 lines

What it actually says

{
  "name": "fastapi-plugin",
  "version": "1.3.0",
  "description": "FastAPI backend + database stack provider (priority=150). Detects fastapi in pyproject.toml/requirements.txt. Provides fastapi-architect (Sonnet/medium — APIRouter, Pydantic v2 schemas, Depends injection, async endpoints, OAuth2/JWT, OpenAPI, SQLAlchemy model stubs, API contract for SPA frontends) and alembic-specialist (Sonnet/low — SQLAlchemy 2.0 mapped classes, alembic revision --autogenerate, migration review, alembic upgrade head, verification) agents plus fastapi-conventions and sqlalchemy-patterns skills. Reuses python-foundation skills. Extra database phase after development.",
  "author": {
    "name": "Oleksii Kruhlyk",
    "url": "https://github.com/AratKruglik"
  },
  "license": "MIT",
  "homepage": "https://github.com/AratKruglik/claude-sdlc",
  "keywords": [
    "python",
    "fastapi",
    "pydantic",
    "sqlalchemy",
    "alembic",
    "backend",
    "database",
    "sdlc",
    "stack-provider"
  ],
  "dependencies": [
    "sdlc",
    "python-foundation"
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 27 lines scan A 8e84eec3d8a0

Subscribe to this mod's changes

fastapi-plugin is a plugin published in the GitHub repository AratKruglik/claude-sdlc (31 stars, last pushed 28d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.