A toolkit for creating and maintaining Agent skills that work across different platforms. It can scaffold skills, check their structure, score their quality, improve them, and manage later revisions.

Adding new skills, validating skill files, evaluating quality, refining instructions, and applying tracked improvements with rollback support.

It provides a repeatable way to build skills and catch structural or quality problems before others use them.

cc-skills — Skill for Claude Code and Codex by gobing-ai

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.

Any agent

npx skills add gobing-ai/superskill --skill cc-skills

Clone the repo

git clone --depth 1 https://github.com/gobing-ai/superskill

Made for: Claude Code, Codex.

Or install cc, the plugin that ships this one along with the rest of its 6 skills, 17 commands, 5 agents, 1 hook.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gobing-ai/superskill/cc-skills.svg)](https://agentmods.dev/skills/gobing-ai/superskill/cc-skills)

Your own site

<a href="https://agentmods.dev/skills/gobing-ai/superskill/cc-skills"><img src="https://agentmods.dev/badge/skills/gobing-ai/superskill/cc-skills.svg" alt="Measured on agentmods" height="20"></a>

Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,883 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.

Model	Per session	Once invoked
Fable 5.1	$0.00049	$0.01883
Opus 5	$0.00024	$0.00941
Sonnet 5	$0.00010	$0.00377
Haiku 4.5	$0.00005	$0.00188

Measured yesterday against content hash 86228ebcc5d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

cc-skills 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 yesterday.

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.

plugins/cc/skills/cc-skills/SKILL.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Lifecycle

Improve a target skill's usefulness for its intended tasks and hosts. Keep its core workflow in the skill; commands and subagents route requests to it. A higher static score is supporting evidence, not proof of better task results, safe execution, or universal compatibility.

Route the request

Intent	Operation	Deterministic entry
Create a skill	`scaffold` (`add` in lifecycle terminology)	`superskill skill scaffold <name>`
Check structure	`validate`	`superskill skill validate <nameOrPath>`
Review quality without editing the target	`evaluate`	`superskill skill evaluate <nameOrPath>`
Fix an existing skill	`refine`	`superskill skill refine <nameOrPath>`
Analyze history or manage proposals	`evolve`	`superskill skill evolve <name>`

The actual CLI command superskill skill add <source> installs an existing skill; it does not scaffold one. Packaging, migration, and installation are separate operations in workflows.md. Preserve explicit arguments and operation boundaries: evaluation leaves the target unchanged, and a requested dry run does not apply semantic edits.

Start with the target and evidence

Resolve the source of truth, applicable instruction hierarchy, requested outcome, and intended hosts/models. Read the skill, relevant references/assets/scripts, existing callers, and known failures before editing. Inspect the installed artifact when the problem occurs after install.
Identify what the skill contributes: missing capability, project knowledge, operator preferences, or an ordered process. Record observable acceptance criteria and constraints from the request and existing project policy. Reuse available context; ask only for material missing information.
Follow the requested operation in workflows.md. Use leaf --help for exact CLI options and live target guidance before selecting a target. Use the host's available tools; do not invent native invocation APIs or assume a shell named Bash.
Verify proportionately using evaluation-framework.md. Distinguish structural checks, semantic review, native host checks, and measured behavior. Report what ran, what changed, failures, and untested claims.

Read the full file on GitHub · 135 lines

Files

What ships with it

19 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.

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.

yesterday Changed · -228 lines · -6 tokens per session scan C → A 86228ebcc5d0
8d ago First seen · 363 lines · 55 tokens per session scan C 8992214bb630

Subscribe to this mod's changes

cc-skills is a skill published in the GitHub repository gobing-ai/superskill (5 stars, last pushed 2d ago), licensed Apache-2.0. It adds 49 tokens to every session and 1,883 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 2026-08-31.

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