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 simota/agent-skills --skill forgegit clone --depth 1 https://github.com/simota/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/simota/agent-skills/forge)<a href="https://agentmods.dev/skills/simota/agent-skills/forge"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/forge/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/simota/agent-skills/forge"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/forge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Prompt Injection · line 6 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
- medium Excessive Agency · line 102 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00038 | $0.04901 |
| Opus 5.5 | $0.00015 | $0.01960 |
| Sonnet 5.5 | $0.00008 | $0.00980 |
| Haiku 4.5 | $0.00004 | $0.00490 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.
What ships with it
17 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.
- _common 10 B
- reference/_common 13 B
- reference/ai-assisted-prototyping.md 11 KB
- reference/api-mocking.md 5.8 KB
- reference/autorun-schema.md 1008 B
- reference/backend-poc.md 5.0 KB
- reference/builder-integration.md 5.0 KB
- reference/dashboard-prototyping.md 5.0 KB
- reference/forge 11 B
- reference/html-artifacts.md 9.4 KB
- reference/mobile-prototyping.md 4.5 KB
- reference/moodboard-workflow.md 5.5 KB
- reference/muse-integration.md 2.4 KB
- reference/prototype-to-production.md 5.2 KB
- reference/prototyping-anti-patterns.md 3.7 KB
- reference/rapid-iteration-methodology.md 3.0 KB
- reference/story-scaffolding.md 4.1 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.
- 10d ago Changed 8ab17665a2f2
- 11d ago Changed · +2 lines eb4058208dca
- 16d ago Changed cb645699cb2a
- 1mo ago Changed · -1 lines 33c677bfe2bb
- 1mo ago Changed · -1 lines 26d527ec63e3
- 1mo ago First seen · 225 lines · 38 tokens per session scan A 1e0bb0ab47a5
forge is a skill published in the GitHub repository simota/agent-skills (95 stars, last pushed 2d ago), licensed MIT. It adds 38 tokens to every session and 4,901 once invoked, about $0.0002 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 2026-09-03.
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