Low-level agentic design patterns. Turning old engineering wisdom into reflexes your agent reaches for on its own—on any agent.
Paperthin is a collection of low-level design patterns that coding agents can apply as repeatable checks and actions during software work. It is for people using agents such as Claude Code, Codex, Cursor, or other supported tools, and its catalogue entries package the patterns as skills, an instruction, and a plugin.
Latest release v0.17.7 — Paperthin 0.17.7 · 30 Sept 2026
2 files for Claude Code, Codex and OpenCode: paperthin CLAUDE.md, paperthin AGENTS.md — 3,409 tokens loaded in every session.
CLAUDE.md A 4 tok AGENTS.md A 3,405 tok These files are LilMGenius/paperthin's own configuration — they tell Claude Code, Codex and OpenCode 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.