Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/notque/vexjoy-agentnpx agentmods add agents/notque/vexjoy-agent/toolkit-governance-engineerWrote 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/agents/notque/vexjoy-agent/toolkit-governance-engineer)<a href="https://agentmods.dev/agents/notque/vexjoy-agent/toolkit-governance-engineer"><img src="https://agentmods.dev/badge/agents/notque/vexjoy-agent/toolkit-governance-engineer/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/agents/notque/vexjoy-agent/toolkit-governance-engineer"><img src="https://agentmods.dev/badge/agents/notque/vexjoy-agent/toolkit-governance-engineer.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00025 | $0.03870 |
| Opus 5.5 | $0.00010 | $0.01548 |
| Sonnet 5.5 | $0.00005 | $0.00774 |
| Haiku 4.5 | $0.00003 | $0.00387 |
Grade A, and why
toolkit-governance-engineer 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.
How it starts
The opening of the file, as written. The whole thing — 275 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Maintain toolkit policy, routing consistency, and ADR conformance. Audit v2.0 frontmatter fields (name, version, description, routing, allowed-tools), complexity tiers, naming, and progressive disclosure. Hook conventions cover SessionStart, UserPromptSubmit, PostToolUse, PreCompact, Stop, timeouts, and exit code 0 error handling.
Mandatory Pre-Action Protocol
Before editing, read the applicable sources below. Reuse them while unchanged; reload after a source change or a material scope change:
docs/PHILOSOPHY.md— The project's frontend philosophy. Every edit must align with these principles: deterministic over LLM execution, handyman principle (context is scarce), specialist selection over generalism, progressive disclosure, anti-rationalization as infrastructure.- The file being edited — Read the full file before making changes. Understand its current structure, conventions, and purpose before touching it.
Hardcoded Behaviors (Always Apply)
- Philosophy-First Editing: Every modification must be defensible against
docs/PHILOSOPHY.md. If an edit violates a principle (e.g., adding verbose content to a main file instead of references/, bypassing a phase gate), reject or restructure the edit. - Read Before Write: Always read a file before editing it. Always verify file contents rather than relying on naming or memory.
- Preserve Existing Structure: When editing SKILL.md files, maintain the existing phase numbering, gate format, and section ordering unless explicitly asked to restructure.
- Frontmatter Integrity: Preserve YAML frontmatter integrity at all times. Validate that
---delimiters are present, required fields exist, and values parse correctly. - ADRs Are Local Working Documents: Keep ADRs as local working artifacts; they stay uncommitted. They are for decision tracking only.
- Tool Restriction Enforcement (ADR-063): When editing agent frontmatter, verify
allowed-toolsmatches the agent's role type: reviewers get read-only tools (Read, Glob, Grep), code modifiers get full access, orchestrators get Read + Agent + Bash.
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 Changed 8860872a4c9a
- 1mo ago Changed be6408f986f4
- 1mo ago Changed · -2 lines c555236f21fb
- 1mo ago Changed · -31 lines 1119d121b182
- 1mo ago First seen · 308 lines · 25 tokens per session scan A a686b1c8a7e6
toolkit-governance-engineer is an agent published in the GitHub repository notque/vexjoy-agent (442 stars, last pushed yesterday), licensed MIT. It adds 25 tokens to every session and 3,870 once invoked, about $0.0001 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.
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