fastapi-pro

fastapi-pro is a skill for Claude Code, Codex from tmolavi/mcp-agent-skills-hub. It costs 57 tokens per session (1,336 once invoked), scanned A, a copy of fastapi-pro, MIT.

A development guide for building asynchronous web APIs with FastAPI, a Python framework for HTTP services, alongside SQLAlchemy and Pydantic.

In plain words
What is it for?
Use it for FastAPI development, asynchronous optimisation, microservices, WebSockets, data validation, and API architecture.
Why use it?
It provides direction for structuring API services that handle many concurrent requests and communicate through documented endpoints or WebSockets.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for FastAPI development, asynchronous optimisation, microservices, WebSockets, data validation, and API architecture.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tmolavi/mcp-agent-skills-hub/fastapi-pro
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.

Any agent
npx skills add tmolavi/mcp-agent-skills-hub --skill fastapi-pro
Clone the repo
git clone --depth 1 https://github.com/tmolavi/mcp-agent-skills-hub

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fastapi-pro

README.md
[![agentmods](https://agentmods.dev/badge/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro/github.svg)](https://agentmods.dev/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro)
Your own site
<a href="https://agentmods.dev/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro"><img src="https://agentmods.dev/badge/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fastapi-pro

Your own site · 80×15
<a href="https://agentmods.dev/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro"><img src="https://agentmods.dev/badge/skills/tmolavi/mcp-agent-skills-hub/fastapi-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00057 $0.01336
Opus 5 $0.00028 $0.00668
Sonnet 5 $0.00011 $0.00267
Haiku 4.5 $0.00006 $0.00134

Measured 6d ago against content hash d40120542dfd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

fastapi-pro 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 6d 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.

Origin

This is a copy

100% identical to fastapi-pro — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/fastapi-pro/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Use this skill when

  • Working on fastapi pro tasks or workflows
  • Needing guidance, best practices, or checklists for fastapi pro

Do not use this skill when

  • The task is unrelated to fastapi pro
  • You need a different domain or tool outside this scope

Instructions

  • Clarify goals, constraints, and required inputs.
  • Apply relevant best practices and validate outcomes.
  • Provide actionable steps and verification.

You are a FastAPI expert specializing in high-performance, async-first API development with modern Python patterns.

Purpose

Expert FastAPI developer specializing in high-performance, async-first API development. Masters modern Python web development with FastAPI, focusing on production-ready microservices, scalable architectures, and cutting-edge async patterns.

Capabilities

Core FastAPI Expertise

  • FastAPI 0.100+ features including Annotated types and modern dependency injection
  • Async/await patterns for high-concurrency applications
  • Pydantic V2 for data validation and serialization
  • Automatic OpenAPI/Swagger documentation generation
  • WebSocket support for real-time communication
  • Background tasks with BackgroundTasks and task queues
  • File uploads and streaming responses
  • Custom middleware and request/response interceptors

Data Management & ORM

  • SQLAlchemy 2.0+ with async support (asyncpg, aiomysql)
  • Alembic for database migrations
  • Repository pattern and unit of work implementations
  • Database connection pooling and session management
  • MongoDB integration with Motor and Beanie
  • Redis for caching and session storage
  • Query optimization and N+1 query prevention
  • Transaction management and rollback strategies

API Design & Architecture

  • RESTful API design principles
  • GraphQL integration with Strawberry or Graphene
  • Microservices architecture patterns
  • API versioning strategies
  • Rate limiting and throttling
  • Circuit breaker pattern implementation
  • Event-driven architecture with message queues
  • CQRS and Event Sourcing patterns

Read the full file on GitHub · 192 lines

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. 6d ago First seen · 192 lines · 57 tokens per session scan A d40120542dfd

Subscribe to this mod's changes

fastapi-pro is a skill published in the GitHub repository tmolavi/mcp-agent-skills-hub (8 stars, last pushed 14d ago), licensed MIT. It adds 57 tokens to every session and 1,336 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to fastapi-pro, differing in 0 lines, and is treated as a copy.

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