new-skill

new-skill is a command for Claude Code from CrypticSwarm/Swarmforge. It costs 10 tokens per session (419 once invoked), scanned A, original, MIT.

A command for creating a new reusable skill package, either globally or inside the current project. It expects a scope, a kebab-case name, and a short description of the skill's job.

In plain words
What is it for?
Use it to add a new global or project-local skill and optionally create a command that invokes it.
Why use it?
It provides a defined process for placing the skill, writing its required metadata, and deciding whether to add a slash command. It also checks existing skill locations before creating files.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: agent in frontmatter; mentions OpenCode.

Good fit Use it to add a new global or project-local skill and optionally create a command that invokes it.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/crypticswarm/swarmforge/new-skill
Install

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.

Clone the repo
git clone --depth 1 https://github.com/CrypticSwarm/Swarmforge

Made for: Claude Code.

Wrote 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.

agentmods badge for new-skill

README.md
[![agentmods](https://agentmods.dev/badge/commands/crypticswarm/swarmforge/new-skill/github.svg)](https://agentmods.dev/commands/crypticswarm/swarmforge/new-skill)
Your own site
<a href="https://agentmods.dev/commands/crypticswarm/swarmforge/new-skill"><img src="https://agentmods.dev/badge/commands/crypticswarm/swarmforge/new-skill/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.

agentmods 80×15 button for new-skill

Your own site · 80×15
<a href="https://agentmods.dev/commands/crypticswarm/swarmforge/new-skill"><img src="https://agentmods.dev/badge/commands/crypticswarm/swarmforge/new-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 419 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00010 $0.00419
Opus 5.5 $0.00004 $0.00168
Sonnet 5.5 $0.00002 $0.00084
Haiku 4.5 $0.00001 $0.00042

Measured 1mo ago against content hash a0e79167706f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

new-skill 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.

commands/new-skill.md · 41 lines

What it actually says

Activate the skill-writer skill before taking any other action.

New skill request: $ARGUMENTS

Expected arguments:

  • Scope: global or local
  • Skill name (kebab-case directory name)
  • What the skill should do (1–3 sentences)

If any of these are missing or ambiguous, ask follow-up questions and stop.

Current working tree: !git status --short

Existing global skills (if present): !ls skills 2>/dev/null || ls ~/.config/opencode/skills 2>/dev/null || true

Existing local skills (if present): !test -d .opencode/skills && ls .opencode/skills || true

Create the skill in the appropriate location:

  • If scope is global, write to skills/<skill-name>/SKILL.md when the workspace has a top-level skills/ directory (the Swarmforge checkout), otherwise ~/.config/opencode/skills/<skill-name>/SKILL.md.
  • If scope is local, write to .opencode/skills/<skill-name>/SKILL.md.

Ensure SKILL.md frontmatter contains only name and description. Use description as an activation CTA ("MUST be activated when…").

After the skill content is drafted, determine whether a slash command should also be created for it.

  • If scope is global, commands live in commands/ when the workspace has that top-level directory (the Swarmforge checkout), otherwise ~/.config/opencode/command/.
  • If scope is local, commands live in .opencode/command/.

If creating a command, confirm the desired command name and argument shape, then create <command-name>.md that:

  1. activates the new skill first,
  2. validates $ARGUMENTS (ask and stop if missing), and
  3. injects only small, high-signal ! context blocks.
Changes

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.

  1. 1mo ago First seen · 41 lines · 10 tokens per session scan A a0e79167706f

Subscribe to this mod's changes

new-skill is a command published in the GitHub repository CrypticSwarm/Swarmforge (3 stars, last pushed 14d ago), licensed MIT. It adds 10 tokens to every session and 419 once invoked, about $0.0000 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.