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 caoyuan-fire/engi-foundry-skill --skill engifoundrygit clone --depth 1 https://github.com/caoyuan-fire/engi-foundry-skillWrote 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/caoyuan-fire/engi-foundry-skill/engifoundry)<a href="https://agentmods.dev/skills/caoyuan-fire/engi-foundry-skill/engifoundry"><img src="https://agentmods.dev/badge/skills/caoyuan-fire/engi-foundry-skill/engifoundry/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/caoyuan-fire/engi-foundry-skill/engifoundry"><img src="https://agentmods.dev/badge/skills/caoyuan-fire/engi-foundry-skill/engifoundry.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 | $0.00065 | $0.00493 |
| Opus 5 | $0.00032 | $0.00246 |
| Sonnet 5 | $0.00013 | $0.00099 |
| Haiku 4.5 | $0.00006 | $0.00049 |
Grade A, and why
engifoundry 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 10d 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.
What it actually says
EngiFoundry Entry
Inject this entry once at the start of every session. Apply its rules to every user turn.
- At session start, check exactly
<project-root>/engifoundry.config.jsononce. Do not search for it. - If it exists, read
engifoundry-router/SKILL.mdin full before responding to the user. - If it does not exist, remain uninitialized and inspect only whether the request explicitly contains
$engifoundry,engifoundry,engi, orfoundryas a case-insensitive identifier. - For an explicit request to initialize, scaffold, onboard, connect, migrate, or upgrade a project for EngiFoundry, load
engifoundry-init/SKILL.md. - For an explicit request to use EngiFoundry for actionable engineering work without initialization intent, load
engifoundry-router/SKILL.mdin unconfigured fallback mode. Initialization may be suggested as an optional way to enable project preferences and heavyweight contracts, but it is never a prerequisite for this work. - Otherwise bypass EngiFoundry silently and handle the request normally. Merely discussing or asking about EngiFoundry is not actionable engineering work.
- After Init completes, check exactly
<project-root>/engifoundry.config.jsononce again. If it now exists, immediately readengifoundry-router/SKILL.mdin full. Do not require a new session.
Reading only Router metadata or a summary is forbidden. The Router governs every user turn after it is loaded.
Initialization and actionable-work matching are semantic, not fixed commands. Initialization language without an explicit EngiFoundry identifier must never activate EngiFoundry.
Never scan for configuration. Never recognize any other filename, location, or project signal. Do not validate configuration content or project records; Init and Node skills own those rules.
Do nothing else. Never route, infer, govern, plan, execute, verify, deliver, or load Node skills from this entry.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 25 lines · 65 tokens per session scan A 4589457d4fa0
engifoundry is a skill published in the GitHub repository caoyuan-fire/engi-foundry-skill (2 stars, last pushed 16d ago), licensed Apache-2.0. It adds 65 tokens to every session and 493 once invoked, about $0.0003 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 2026-08-31.
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