michael-denyer / pstack-claude

Port of Poteto's pstack, a set of opinionated agent workflow skills, translated for Claude Code, Codex, Copilot, Pi, OpenCode, and Gemini.

rohitg00 / ai-engineering-from-scratch

A free, MIT-licensed course of 542 lessons on AI engineering, implementing model internals, retrieval, and agent runtimes from scratch.

mnfst / awesome-free-llm-apis

A curated list of LLM APIs that offer permanent free tiers for text inference, with base URLs, models, and rate limits.