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 agentmods add skills/coroboros/agent-skills/forgenpx skills add coroboros/agent-skills --skill forgegit clone --depth 1 https://github.com/coroboros/agent-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/coroboros/agent-skills/forge)<a href="https://agentmods.dev/skills/coroboros/agent-skills/forge"><img src="https://agentmods.dev/badge/skills/coroboros/agent-skills/forge.svg" alt="Measured on agentmods" 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 | $0.00172 | $0.07781 |
| Opus 5 | $0.00086 | $0.03890 |
| Sonnet 5 | $0.00034 | $0.01556 |
| Haiku 4.5 | $0.00017 | $0.00778 |
Grade A, and why
forge 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 4d 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 — 349 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Forge
Critical — Adversarial verification
These rules govern how this skill trusts its own output — apply them whenever it verifies a claim, a defect, a source, or a decision before acting on it.
- Refute by default. Treat each non-trivial finding as unproven until a fresh-context check fails to refute it — the context that produced a claim cannot reliably clear it.
- No silent drop. Every finding flips the conclusion, is refuted in writing, or is filed as a risk or open question. A finding that vanishes without a verdict is a defect.
- Don't re-litigate settled facts. Spend adversarial effort on load-bearing or contested claims; let established facts pass. Over-refutation manufactures false doubt — it does not add rigor.
- Stay selective and cost-aware. Scale verification to the stakes; reversible, low-impact work gets a light touch, not a full adversarial sweep.
- Concede only to a strong rebuttal. A weak counter folds into the finding or gets filed; it does not overturn it.
Important — Writing rules
These rules govern every prose artifact this skill emits — READMEs, CHANGELOGs, commit messages, PR bodies, release notes, doc paragraphs, non-trivial comments. Apply them at draft time, verify before output.
- Match the surrounding style — punctuation, capitalization, backtick conventions, em-dash vs parens, bullet style.
- Every sentence changes the reader's understanding. Cut it otherwise.
- Front-load the verb — "Creates", not "This helps you create".
- Concrete over abstract. Lists for ≥3 enumerable items.
- Assert positively. Reserve negation for real constraints (
NEVER commit secrets). - No marketing words: powerful, robust, seamlessly, leverage, unlock, comprehensive, delightful.
- No AI tells: delve, tapestry, intricate, pivotal, testament, underscore, crucial, garner, showcase, additionally, moreover, furthermore, indeed.
- After drafting English prose, invoke
/humanize-enif installed.
What ships with it
11 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.
- evals/evals.json 16 KB
- references/adversarial-panel.md 8.5 KB
- references/clarify-playbook.md 3.8 KB
- references/issue-creation.md 3.5 KB
- references/research-discipline.md 4.1 KB
- references/spec-craft.md 5.4 KB
- references/subagent-prompts.md 6.4 KB
- references/thinking-tools.md 1.4 KB
- scripts/setup-labels.sh 885 B runs code
- scripts/validate_spec.py 5.4 KB runs code
- templates/forge-artifact.md 4.7 KB
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.
- 4d ago First seen · 349 lines · 172 tokens per session scan A 0f3e9fa75a08
forge is a skill published in the GitHub repository coroboros/agent-skills (4 stars, last pushed 3d ago), licensed MIT. It adds 172 tokens to every session and 7,781 once invoked, about $0.0009 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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