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 int2t05/engineering-skills --skill implementgit clone --depth 1 https://github.com/int2t05/engineering-skillsWrote 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/int2t05/engineering-skills/implement)<a href="https://agentmods.dev/skills/int2t05/engineering-skills/implement"><img src="https://agentmods.dev/badge/skills/int2t05/engineering-skills/implement/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/int2t05/engineering-skills/implement"><img src="https://agentmods.dev/badge/skills/int2t05/engineering-skills/implement.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 | $0.00020 | $0.00338 |
| Opus 5.5 | $0.00008 | $0.00135 |
| Sonnet 5.5 | $0.00004 | $0.00068 |
| Haiku 4.5 | $0.00002 | $0.00034 |
Grade A, and why
implement 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 8d 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
Implement
When to use
- Implement an agreed change in verifiable steps.
Not for: spec for unresolved behavior; architecture for consequential design.
Steps
-
Inspect relevant contracts, code, user changes and actual commands; small unambiguous changes use an inline scope and checks.
-
Choose complete behavior slices or incremental mechanical steps. Use test-first at meaningful boundaries; configuration and generated artifacts use relevant validators.
-
Make the smallest correct change, verify unfamiliar APIs against current official docs and run affected checks after changed behavior.
-
Review the diff and failure paths; use independent review only when authorized and justified, otherwise self-review.
-
Complete relevant final checks, correct regressions and synchronize affected approved documents; report evidence and leave commits to explicit requests.
Verify
- Acceptance behavior and relevant checks pass; diff is scoped, user work preserved and no commit or push inferred.
References
- engineering-principles.md — shared decision boundaries, scope and verification.
- clean-code.md — code-quality bar for the implementation.
- references/source-verification.md — source hierarchy, citation rules, retrieval safety.
- references/doubt-cycle.md — the five-step doubt cycle and cross-model escalation.
- references/lightweight-changes.md — small edits, renames, scaffolding that don't need a spec
What ships with it
4 files 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.
- 8d ago Changed · -49 lines · -106 tokens per session 6c47c1f03315
- 1mo ago First seen · 86 lines · 126 tokens per session scan A dcaf5464ee68
implement is a skill published in the GitHub repository int2t05/engineering-skills (3 stars, last pushed 9d ago), licensed MIT. It adds 20 tokens to every session and 338 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 2026-08-31.
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