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 skills add Q00/ouroboros --skill pmgit 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/skills/q00/ouroboros/pm)<a href="https://agentmods.dev/skills/q00/ouroboros/pm"><img src="https://agentmods.dev/badge/skills/q00/ouroboros/pm/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/q00/ouroboros/pm"><img src="https://agentmods.dev/badge/skills/q00/ouroboros/pm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Agent Snooping · line 67 Skill accesses MCP server configuration files (mcp.json). MCP configs contain server URLs, authentication tokens, and tool definitions — reading them allows the skill to discover and potentially abuse other tool integrations.Fix: Remove all code or instructions that read MCP configuration files (mcp.json). MCP server details should be managed by the agent runtime, not read by individual skills.
- medium Data Exfiltration · line 18 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Excessive Agency · line 287 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00058 | $0.02942 |
| Opus 5.5 | $0.00023 | $0.01177 |
| Sonnet 5.5 | $0.00012 | $0.00588 |
| Haiku 4.5 | $0.00006 | $0.00294 |
Grade A, and why
pm 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/ouroboros:pm
PM-focused Socratic interview that produces a Product Requirements Document (PRD).
Required Skill Capabilities
ask_user: ask the user through the active runtime'sask_usercapability.call_mcp:ouroboros_pm_interviewholds the interview state and writes the PRD.orchestrate_subagents: run the evidence lanes each question carries.refine_answer: confirm the structured answer before it is sent (Refine gate).run_shell: copy the finished PRD to the clipboard, when available.
Instructions
Updates are checked in the background; if your context carries an Ouroboros update notice, mention ooo update once after the first question.
Step 1: Loading MCP tools (deferred-schema guard)
Ouroboros tools may be deferred, and a schema loaded on one turn can unload by the next. Immediately before each ouroboros_* call, load it with the active runtime's tool-discovery capability: "+ouroboros pm_interview" for ouroboros_pm_interview. A call whose schema is not loaded fails with "Invalid tool parameters". If the tool is already callable, discovery is a no-op and an empty result is expected. Use the fallback only when the tool is genuinely absent.
Fallback: fail closed. Do not inspect or edit ~/.claude/mcp.json and do not add a direct Python fallback. Tell the user this, then stop:
The PM interview MCP tool is unavailable in this runtime.
Configure a supported CLI-backed host with:
ouroboros setup --runtime <codex|opencode|kiro|copilot|hermes>
Then restart that host and retry ooo pm. Claude SDK profiles ([claude] and
[claude-sdk]) stay on MCP 1.x; the separate [mcp] server uses [claude-cli]. Do
not combine both MCP majors or add a direct Python fallback.
Step 2: Start Interview
Tool: ouroboros_pm_interview
Arguments:
initial_context: <user's topic or idea>
cwd: <current working directory>
The response carries the first question, so Step 3 applies to it, evidence lanes included.
Step 3: Loop
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.
- 3d ago Changed · -280 lines · +16 tokens per session 45b06fac7cfe
- 1mo ago First seen · 464 lines · 42 tokens per session scan A b11cf575acb0
pm is a skill published in the GitHub repository Q00/ouroboros (6,250 stars, last pushed today), licensed MIT. It adds 58 tokens to every session and 2,942 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
client-onboarding
Use when a deal closed or a user signed up and the first 30 days need an activation plan: sales→delivery handoff, one verifiable activation event, kickoff, and a 30/60/90 or day-0→14 plan with owners, dates and a measurable exit. NOT reactive ticket triage (that is customer-support), NOT renewals/churn past the…
grants
Use when pursuing non-dilutive public or foundation funding — money you neither repay nor give equity for: finding a fit call, go/no-go, registration (UEI/PIC/BDNS), or writing the rubric-scored application, logic model, budget justification, or LOI. NOT an equity round (that is fundraising), NOT a paying-customer SOW…
procurement
Use when a small operator must choose what to buy and from whom: pick a supplier, write an RFI/RFQ/RFP that returns comparable bids, score quotes on total cost of ownership, negotiate price and payment terms, or judge single-source risk. NOT redlining the purchase agreement (that is contracts), NOT the price you…
proposals
Use when writing the document a buyer reads to say yes — a commercial proposal or Statement of Work, turning discovery notes into a scoped and priced document, adding tiers so the middle one wins, or diagnosing a proposal that will not close. NOT the binding legal agreement with its liability and IP clauses (that is…
project-ops
Use when an operator wants to run a small or mid-sized project from a flat file instead of standing up Jira or Asana — dated milestones each with one named owner and a binary done-test, rule-driven RAG status, a RAID log, slippage detection, and a two-minute weekly status report. NOT sequencing the engineering work…
ftd
Use for ordinary authorised change — the default lane once the decisor has ruled out a question and not selected the chain. Keeps one feature document per feature in 02-DOCS holding intent, scope, checklist, evidence and next step, checks tasks off only against observed proof, and asks whether to branch before the…