Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.
Latest release vercel-ai-sdk-v0.5.0 · 20 Aug 2026
2 files for Codex, OpenCode and Claude Code: ratel AGENTS.md, ratel CLAUDE.md — 1,079 tokens loaded in every session.
AGENTS.md A 1,074 tok CLAUDE.md A 5 tok These files are ratel-ai/ratel's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.