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.
git clone --depth 1 https://github.com/StChiotis/Library-First-EngineeringWrote 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/commands/stchiotis/library-first-engineering/lfe-mutation-verify)<a href="https://agentmods.dev/commands/stchiotis/library-first-engineering/lfe-mutation-verify"><img src="https://agentmods.dev/badge/commands/stchiotis/library-first-engineering/lfe-mutation-verify/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/commands/stchiotis/library-first-engineering/lfe-mutation-verify"><img src="https://agentmods.dev/badge/commands/stchiotis/library-first-engineering/lfe-mutation-verify.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 | $0.00066 | $0.00223 |
| Opus 5.5 | $0.00026 | $0.00089 |
| Sonnet 5.5 | $0.00013 | $0.00045 |
| Haiku 4.5 | $0.00007 | $0.00022 |
Grade A, and why
lfe-mutation-verify 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 1mo 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
84% identical to lfe-boot — 8 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.
What it actually says
Generated pointer — not the protocol. This command exists so
/lfe-mutation-verifydispatches natively in Claude Code. The canonical skill lives at.agents/skills/lfe-mutation-verify/SKILL.md(LFE-SOURCE).
Read .agents/skills/lfe-mutation-verify/SKILL.md now and execute its protocol exactly as written — including its position-in-pipeline preconditions and its coordination-file contract. Honor the Skill Invocation Authority rules (LLM_AGENT_GUIDE §8.8): if this skill is agent-dispatched only and was typed out of sequence, refuse and route through the assembly line. Any change to skill behavior belongs in the canonical file, never in this pointer.
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.
- 1mo ago First seen · 9 lines · 66 tokens per session scan A 17f1619aacfd
lfe-mutation-verify is a command published in the GitHub repository StChiotis/Library-First-Engineering (46 stars, last pushed 3mo ago), licensed MIT. It adds 66 tokens to every session and 223 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 84% identical to lfe-boot, differing in 8 lines, and is treated as a copy.
Other commands, from other repositories
AGENTS
Commander.js-based CLI commands registered in src/main.ts.
t00-playwright-test
A command for testing a locally running web app in a real browser with Playwright, a browser automation and testing tool. It checks normal user flows and selected edge cases, then reports results with screenshots.
agileteam
Orchestrate an autonomous, defense-in-depth TDD multi-agent team (requirements → spec-sanity gate → planner → coder/reviewer loop → verification/security/validation/judgment gates → human acceptance → retrospective) to build a feature end-to-end against fully verified, independently validated requirements.
bench-oracle
Empirically measure an agent/prompt/process change instead of asserting it works — build a task corpus, run a deterministic mutation oracle (sabotage the code, see which tests catch it), and write an honest report including negative results. Use to compare two agent variants (e.g. baseline vs. a DNA/prompt change) or…
openrouter-live-smoke
Run an honest, credit-careful, key-safe LIVE real-boundary smoke against OpenRouter (a single model via councilinference, a council via deepseekreview preset, or the GUI proxy). Probe reachability first, gate the live call, leak-check the key, capture honest attrition, and record real-boundary-smoke in the reality…
expect
Diff-aware AI browser testing — reads the git diff, maps changes to affected pages via the route map, generates a targeted test plan, and executes it via agent-browser (Rust daemon + CDP, ARIA-tree-first) with pass/fail reporting. Use when testing UI changes, verifying PRs before merge, or running regression checks on…