Q00/ouroboros is an Agent OS for running coding agents through interviews, staged evaluation, and repeated improvement cycles. It helps developers turn vague requests into tested code across multiple agent runtimes. Its catalogue add-ons provide workflows, agents, hooks, instructions, and integrations for operating those processes.
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 agentmods add instructions/q00/ouroboros/claude-mdgit clone --depth 1 https://github.com/Q00/ouroborosWrote 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/instructions/q00/ouroboros/claude-md)<a href="https://agentmods.dev/instructions/q00/ouroboros/claude-md"><img src="https://agentmods.dev/badge/instructions/q00/ouroboros/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.02007 | $0.02007 |
| Opus 5 | $0.01004 | $0.01004 |
| Sonnet 5 | $0.00401 | $0.00401 |
| Haiku 4.5 | $0.00201 | $0.00201 |
Grade A, and why
ouroboros CLAUDE.md 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 5d 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.
This is a copy
91% identical to ouroboros AGENTS.md — 46 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ouroboros - Development Environment
This CLAUDE.md is for local development only. End users install via:
claude plugin marketplace add Q00/ouroboros claude plugin install ouroboros@ouroborosOnce installed as a plugin, skills/hooks/agents work natively without this file.
ooo Commands (Dev Mode)
When the user types any of these commands, read the corresponding SKILL.md file and follow its instructions exactly:
| Input | Action |
|---|---|
ooo (bare, no subcommand) |
Read skills/welcome/SKILL.md and follow it |
ooo auto ... |
Read skills/auto/SKILL.md and follow it |
ooo interview ... |
Read skills/interview/SKILL.md and follow it |
ooo seed |
Read skills/seed/SKILL.md and follow it |
ooo run |
Read skills/run/SKILL.md and follow it |
ooo evaluate or ooo eval |
Read skills/evaluate/SKILL.md and follow it |
ooo evolve ... |
Read skills/evolve/SKILL.md and follow it |
ooo unstuck or ooo stuck or ooo lateral |
Read skills/unstuck/SKILL.md and follow it |
ooo status or ooo drift |
Read skills/status/SKILL.md and follow it |
ooo ralph |
Read skills/ralph/SKILL.md and follow it |
ooo tutorial |
Read skills/tutorial/SKILL.md and follow it |
ooo setup |
Read skills/setup/SKILL.md and follow it |
ooo welcome |
Read skills/welcome/SKILL.md and follow it |
ooo cancel |
Read skills/cancel/SKILL.md and follow it |
ooo config |
Read skills/config/SKILL.md and follow it |
ooo qa or ooo qa ... |
Read skills/qa/SKILL.md and follow it |
ooo help |
Read skills/help/SKILL.md and follow it |
ooo update |
Read skills/update/SKILL.md and follow it |
ooo pm or ooo pm ... |
Read skills/pm/SKILL.md and follow it |
ooo brownfield or ooo brownfield ... |
Read skills/brownfield/SKILL.md and follow it |
ooo publish or ooo publish ... |
Read skills/publish/SKILL.md and follow it |
ooo resume-session |
Read skills/resume-session/SKILL.md and follow it |
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.
- 5d ago First seen · 157 lines · 2,007 tokens per session scan A 20474efae0a3
ouroboros CLAUDE.md is an instructions file published in the GitHub repository Q00/ouroboros (5,769 stars, last pushed today), licensed MIT. It adds 2,007 tokens to every session, about $0.0100 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to ouroboros AGENTS.md, differing in 46 lines, and is treated as a copy.
Other instructions, from other repositories
intelligent-terminal rust.instructions.md
Concise Rust coding conventions for this repository.
Browser4 CLAUDE.md
Claude Code instructions for platonai/Browser4, covering browser4 — project context for claude, architecture, key dispatch chain (cli → browser), batch commands and e2e test structure.
apex-accelerator vendor-prompting.instructions.md
Vendor prompting best-practice rules for Anthropic Claude and OpenAI GPT-5.6-Terra agents and prompts. Each rule cites a rule ID in the vendor-prompting skill rules.json registry. Validator: npm run lint:vendor-prompting.
autopus-adk GEMINI.md
Gemini CLI instructions for Insajin/autopus-adk, covering autopus-adk harness, 스킬 디렉터리, core guidelines, subagent delegation and file size limit.
clawock AGENTS.md
AGENTS.md instructions for KCNyu/clawock, covering agents.md - your workspace, every session, kcn 偏好, git hook (one-time setup per clone) and git auto-commit rules.
usage-guard AGENTS.md
Instructions for shirley-xue-2025/usage-guard, covering agent notes — usage-guard repo, before changing code, common setup failure, layout and public vs private.