Pydantic
3 production projects and 2 rule sets built with Pydantic.
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
LangChain
Industry standard for context-aware reasoning; modular chains and LangGraph cyclic graphs allow orchestrating stateful agents with deterministic fallbacks and tool execution.
FastAPI
Benchmark for modern Python APIs and AI services; pairs Starlette with Pydantic v2 Rust core for ultra-high throughput and automatic interactive documentation.
OpenBB
Dozens of data provider adapters: schema validation is a core product requirement.
Often Used With
Frequently Asked Questions
How many production projects use Pydantic?
3 verified production projects in the STACK IT FAST directory use Pydantic, each with a full architecture breakdown.
What is Pydantic most often used with?
Across projects in the directory, Pydantic is most commonly paired with Python, TypeScript, LangGraph.
Is there an AGENTS.md rule or Claude Code skill for Pydantic?
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 Pydantic.