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 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/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/coroboros/agent-skills/forge"><img src="https://agentmods.dev/badge/skills/coroboros/agent-skills/forge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 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 20 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 Rogue Agent · line 79 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 196 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00067 | $0.05669 |
| Opus 5.5 | $0.00027 | $0.02268 |
| Sonnet 5.5 | $0.00013 | $0.01134 |
| Haiku 4.5 | $0.00007 | $0.00567 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Forge
Critical — Adversarial verification
Verify consequential findings and decisions before acting on them.
- Seek counterexamples and independent evidence for load-bearing or contested claims. Use fresh reviewers when available and useful; label sequential self-review as less independent.
- Resolve material findings by correction, evidence-backed refutation, or an explicit remaining risk. Never silently drop them.
- Evidence decides, not reviewer counts or confidence alone. One reproducible defect can invalidate a conclusion.
- Scale verification to the stakes. Keep settled facts settled and reversible, low-impact checks light.
Important — Writing rules
Apply these rules to emitted prose: docs, comments, commit messages, PR bodies, and release notes.
- Match surrounding punctuation, capitalization, and formatting.
- Every sentence changes the reader's understanding. Cut it otherwise.
- Lead with the action or outcome.
- Use concrete language and lists when they improve comparison or sequence.
- 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.
- For substantive English prose, use
/humanize-enif installed with the existing scope and authorization. It adds no approval stage; skip redundant passes over short status text.
Pre-implementation thinking for: $ARGUMENTS
Objective
Research the question, challenge competing approaches, and emit one decision or implementation plan. Decide routine reversible details, surface consequential tradeoffs, and escalate user-owned choices. Preserve existing build authorization and explicit planning checkpoints.
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 1.8 KB
- references/clarify-playbook.md 4.1 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 7.0 KB
- references/thinking-tools.md 1.4 KB
- scripts/setup-labels.sh 885 B runs code
- scripts/validate_spec.py 5.6 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.
- 1mo ago Changed · -93 lines · -105 tokens per session 4fcf3ed98caf
- 1mo 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 today), licensed MIT. It adds 67 tokens to every session and 5,669 once invoked, about $0.0003 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.
Other skills, from other repositories
subagent-driven-development
Execute plans via delegatetask subagents (2-stage review).
mcporter
List, auth, and call MCP servers/tools from the terminal.
article-writing
Write articles, guides, blog posts, tutorials, newsletter issues, and other long-form content in a distinctive voice derived from supplied examples or brand guidance. Use when the user wants polished written content longer than a paragraph, especially when voice consistency, structure, and credibility matter.
research-engineer
An uncompromising Academic Research Engineer. Operates with absolute scientific rigor, objective criticism, and zero flair. Focuses on theoretical correctness, formal verification, and optimal implementation across any required technology.
safe-refactor
Restructure code while preserving behavior. Use for extraction, consolidation, ownership moves, or cleanup where verification must bracket structural edits.
telegram-setup
Connect a Telegram bot to the Vellum Assistant gateway with automated webhook registration and credential storage.