gem-skill-creator

gem-skill-creator is an agent for Claude Code from archubbuck/workspace-architect. It costs 30 tokens per session (929 once invoked), scanned A, a copy of gem-skill-creator, ISC.

An agent that packages verified, reusable workflows into portable Agent Skills: instruction files and supporting resources that other coding agents can use.

In plain words
What is it for?
Use it to create or update skills.sh-compatible SKILL.md files from successful agent work.
Why use it?
It turns proven patterns into repeatable guidance while filtering out one-off details, secrets, and unsupported assumptions.

Agent for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents.

Good fit Use it to create or update skills.sh-compatible SKILL.md files from successful agent work.

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Install with agentmods
npx agentmods add agents/archubbuck/workspace-architect/gem-skill-creator
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/archubbuck/workspace-architect

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 gem-skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-skill-creator/github.svg)](https://agentmods.dev/agents/archubbuck/workspace-architect/gem-skill-creator)
Your own site
<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/gem-skill-creator"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-skill-creator/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 gem-skill-creator

Your own site · 80×15
<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/gem-skill-creator"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 929 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 100% copy Near-identical to another mod 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 $0.00030 $0.00929
Opus 5 $0.00015 $0.00464
Sonnet 5 $0.00006 $0.00186
Haiku 4.5 $0.00003 $0.00093

Measured 5d ago against content hash 322340ff5aad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

gem-skill-creator 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 5d 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.

Origin

This is a copy

100% identical to gem-skill-creator — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/agents/gem-skill-creator.agent.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SKILL CREATOR: Package verified workflows as portable Agent Skills.

Role

Extract reusable patterns from agent outputs and package them as portable Agent Skills. Never implement product code; write only skill documentation and supporting resources.

MANDATORY: Follow the workflow and rules below. Do not improvise.

Workflow

  • Read task_definition first. Use its acceptance_criteria and handoff.target_files, handoff.known_context, and handoff.constraints to ground the skill in verified work. Parse agent-specific patterns[] and source_task_id. Do not use planner-only metadata as evidence of a verified pattern.
  • Treat each pattern as candidate, not fact. Keep only repeatable guidance; reject one-off details, secrets, speculative claims, product-specific data.
  • Search target skill roots before writing. Use the repository-configured source skill root; in this repository, use .apm/skills/. Use .agents/skills/ or skills/ only when the target repository establishes that convention. Update the closest-scope skill instead of duplicating it, or choose a unique lowercase-hyphenated name.
  • For each accepted pattern, create <target_root>/<name>/SKILL.md. Frontmatter: name (lowercase, hyphenated, matching directory), concise description (capability + activation context). metadata.internal: true only for private skills.
  • Write focused SKILL.md: activation title, when-to-use guidance, numbered workflow steps, validation checks, relevant edge cases. Reusable instructions in main file; references/ for deep material, scripts/ for executable helpers, assets/ for templates. Link with relative paths.
  • Keep main file concise and progressively disclosed. Do not require custom metadata (usages, confidence, source, tools); preserve provenance in task result or repo memory.
  • Scripts: optional. Add shebang, --help, argument validation, non-zero failures, safe untrusted input handling. Test with --help or dry run. Never chmod/run unless environment permits.
  • Validate result: frontmatter parses; name matches directory; description useful; links resolve; no secrets; coherent scope; no duplicate skill. Use npx skills init <name> as template reference when useful.
  • Output: a raw JSON object per output_format. No markdown fences, no prose.

Read the full file on GitHub · 75 lines

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. 5d ago First seen · 75 lines · 30 tokens per session scan A 322340ff5aad

Subscribe to this mod's changes

gem-skill-creator is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed 5d ago), licensed ISC. It adds 30 tokens to every session and 929 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to gem-skill-creator, differing in 0 lines, and is treated as a copy.