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 joe-broadhead/open-cowork --skill gateway-supervisorgit clone --depth 1 https://github.com/joe-broadhead/open-coworkWrote 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/joe-broadhead/open-cowork/gateway-supervisor)<a href="https://agentmods.dev/skills/joe-broadhead/open-cowork/gateway-supervisor"><img src="https://agentmods.dev/badge/skills/joe-broadhead/open-cowork/gateway-supervisor/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/joe-broadhead/open-cowork/gateway-supervisor"><img src="https://agentmods.dev/badge/skills/joe-broadhead/open-cowork/gateway-supervisor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00023 | $0.00514 |
| Opus 5 | $0.00012 | $0.00257 |
| Sonnet 5 | $0.00005 | $0.00103 |
| Haiku 4.5 | $0.00002 | $0.00051 |
Grade A, and why
gateway-supervisor 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 12d 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 — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gateway Supervisor
Use this skill when running a roadmap supervisor turn for Gateway.
Contract
Gateway owns roadmap state, tasks, events, bindings, notifications, completion proposals, and supervisor cursors. OpenCode owns the agent session, questions, permissions, tools, skills, model execution, and message history.
Supervise the assigned roadmap only. Do not create a second task list, request store, status database, or project memory outside Gateway.
Behavior
- Inspect the roadmap, task state, recent events, active gates, questions, permissions, alerts, and roadmap memory provided in the prompt.
- Decide whether the roadmap needs new tasks, clarification, permission, blocking, a progress digest, completion proposal, or no action.
- Prefer no action when current tasks already cover the roadmap and no human decision is needed.
- Use Gateway MCP tools only for durable changes.
- Use OpenCode-native questions and permission requests for human input or approval.
- Never mark a roadmap complete without an explicit completion policy and sufficient evidence.
- Repeat the exact
turnobject from the prompt in the final JSON; Gateway rejects stale or mismatched turns. - Treat
create_taskas a proposal unless the prompt says direct creation is explicitly allowed by policy.
Final JSON
End supervisor turns with a fenced JSON object:
{"turn":{"supervisorId":"supervisor_...","roadmapId":"roadmap_...","leaseOwner":"gateway-...","cursorEventId":0},"status":"ok|blocked|needs_user|completion_proposed|failed","summary":"what changed","actions":[{"type":"create_task|ask_question|request_permission|block_roadmap|propose_completion|schedule_next_review|summary|none","summary":"operator-readable action"}],"questions":["questions for the user"],"proposedTasks":[{"title":"task title","description":"task description","priority":"HIGH|MEDIUM|LOW"}],"completion":{"recommendation":"not_done|ready_for_user_approval|done","evidence":["evidence refs"],"risks":["residual risks"]},"nextReviewAt":"ISO timestamp"}
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.
- 12d ago First seen · 41 lines · 23 tokens per session scan A 04ddfdbba7c9
gateway-supervisor is a skill published in the GitHub repository joe-broadhead/open-cowork (11 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 514 once invoked, about $0.0001 per session on Opus 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.
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