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.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add LilMGenius/paperthin --skill re0-loopgit clone --depth 1 https://github.com/LilMGenius/paperthinWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/lilmgenius/paperthin/re0-loop)<a href="https://agentmods.dev/skills/lilmgenius/paperthin/re0-loop"><img src="https://agentmods.dev/badge/skills/lilmgenius/paperthin/re0-loop/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/lilmgenius/paperthin/re0-loop"><img src="https://agentmods.dev/badge/skills/lilmgenius/paperthin/re0-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.00507 |
| Opus 5.5 | $0.00024 | $0.00203 |
| Sonnet 5.5 | $0.00012 | $0.00101 |
| Haiku 4.5 | $0.00006 | $0.00051 |
Grade A, and why
re0-loop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- re0-loop — 100% identical
What it actually says
Run the cycle so learning compounds and code accumulation does not masquerade as progress.
Goal
re0-loop keeps a project moving through repeated turns:
FRAME -> BUILD -> DRIVE -> RE0-MEMO -> HATE -> RE0-WORK -> BUILD AGAIN
The unit of progress is not hours, files, panels, or features. It is the count of quality-cleared templates, reusable platform modules, and anti-patterns eliminated in later cycles.
Workflow
- Frame the thesis and quality gates.
- Build one complete vertical slice.
- Drive it through the real surface: browser for web apps, HTTP for API contracts, computer-use for desktop apps, and CLI only for data-shaped artifacts.
- Run
re0-memoto extract lessons, anti-patterns, and next-cycle gates. - Decide whether the next pass iterates in place or uses
re0-work; when that call or the next move is unclear,nbareads the cycle state and returns the single next action. - Kill the next plan before build: use the project's adversarial review skill or a human-invoked attack when that skill is user-only.
- Version only templates or modules that clear their gates.
Rules
- Tests are supporting evidence, not the gate; every turn needs a real-surface proof sized to the artifact.
- Do not widen before the core loop clears.
- Do not confuse generated variety with structural variety. If many outputs converge to the same shape, the cycle failed the variety gate.
- Preserve negative corpus so later cycles can prove the same anti-pattern is gone.
- Let code die. A restart that preserves the right lessons is progress.
- Stop a lap when no outside truth enters; add evidence before another internal pass.
Verification
Before finishing a lap:
- The real surface was driven and evidence was captured.
- The re0-memo names at least one lesson, anti-pattern, or gate that affects the next pass.
- The keep/iterate/re0-work decision is explicit.
- Any version label belongs only to a quality-cleared template or module.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 45 lines · 60 tokens per session scan A 31eeb611bf1e
re0-loop is a skill published in the GitHub repository LilMGenius/paperthin (1,351 stars, last pushed today), licensed MIT. It adds 60 tokens to every session and 507 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
mm-setup
A setup guide that personalizes a shared mm system for one user. It asks for details such as your name, work area, tools, language, and Obsidian vault location, then saves them in private configuration files.
mm-update
A guided updater for the mm system, which is installed by copying a Git repository rather than through a package manager. It downloads the latest version, registers its skills again, and tells you to restart Claude Code.
mm
A dispatcher that provides short /mm commands for project setup, session recovery, project overviews, and workflow checks. It maps these aliases to longer system commands.
mm-instructions
A generator for ready-to-paste instructions for a Claude.ai project. It reads project details and fills a template with the project's name, technology, planning information, and current work context.
mm-projects
A read-only overview of all registered projects stored in Obsidian notes. It shows each project's status, type, current GSD phase, recent activity, and number of open questions.
goal-loop
Drive a verifiable goal to done with factory-built agents, visible and held-out evidence, and a cross-provider judge.