FastAPI
4 production projects and 2 rule sets built with FastAPI.
AGENTS.md Rules & Agent Skills
FastAPI + Python + PostgreSQL (Async SQLAlchemy & Pydantic v2)
Production guidelines for FastAPI, Pydantic v2 validation, Async SQLAlchemy 2.0 (asyncpg), Alembic migrations, and PostgreSQL/Redis.
LangGraph + Python + FastAPI (Agentic AI Workflows)
Production architecture for autonomous multi-agent systems, LangGraph cyclic state graphs, Pydantic v2 structured tool calling, and Chroma/Qdrant vector stores.
Production Projects
Open WebUI
Extensible OpenAI/Ollama interface; SvelteKit frontend delivers instant responsive streaming while Python FastAPI handles multi-modal RAG and tool calls.
Mem0
Universal memory layer for AI agents; extracts and persists structured personal facts and episodic memories across user chat sessions with low latency.
Baserow
Open source Airtable alternative; Django & FastAPI generate dynamic PostgreSQL table schemas per user workspace.
OpenBB
Dozens of data provider adapters: schema validation is a core product requirement.
Often Used With
Frequently Asked Questions
How many production projects use FastAPI?
4 verified production projects in the STACK IT FAST directory use FastAPI, each with a full architecture breakdown.
What is FastAPI most often used with?
Across projects in the directory, FastAPI is most commonly paired with Python, PostgreSQL, Redis.
Is there an AGENTS.md rule or Claude Code skill for FastAPI?
Yes — FastAPI + Python + PostgreSQL (Async SQLAlchemy & Pydantic v2), LangGraph + Python + FastAPI (Agentic AI Workflows) each include a full AGENTS.md, CLAUDE.md, Cursor .mdc rule set and an installable SKILL.md covering FastAPI.