gem-skill-creator

gem-skill-creator is an agent for coding agents from mubaidr/gem-team. It costs 30 tokens per session (929 once invoked), scanned A, original, Apache-2.0.

A workflow for packaging a verified, repeatable development process as a portable Agent Skill. An Agent Skill is a set of instructions that teaches an agent how to handle a specific kind of task.

In plain words
What is it for?
Use it to create or update SKILL.md files, select a suitable skill location and name, and package proven patterns for skills.sh-compatible agent skills.
Why use it?
It separates reusable guidance from one-off details, so successful workflows can be documented and reused without copying product-specific or speculative information.

Agent

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.

agentmods
npx agentmods add agents/mubaidr/gem-team/gem-skill-creator
Clone the repo
git clone --depth 1 https://github.com/mubaidr/gem-team

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/mubaidr/gem-team/gem-skill-creator.svg)](https://agentmods.dev/agents/mubaidr/gem-team/gem-skill-creator)
Your own site
<a href="https://agentmods.dev/agents/mubaidr/gem-team/gem-skill-creator"><img src="https://agentmods.dev/badge/agents/mubaidr/gem-team/gem-skill-creator.svg" alt="Measured on agentmods" 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. Scan, not verified.
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 $0.00030 $0.00929
Opus 5 $0.00015 $0.00464
Sonnet 5 $0.00006 $0.00186
Haiku 4.5 $0.00003 $0.00093

Measured today against content hash 322340ff5aad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 today.

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.

.apm/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. today Changed 322340ff5aad
  2. 4d ago First seen · 75 lines · 30 tokens per session scan A 781bbb697e05

Subscribe to this mod's changes

gem-skill-creator is an agent published in the GitHub repository mubaidr/gem-team (215 stars, last pushed 4d ago), licensed Apache-2.0. 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.