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 agentmods add skills/harebeats/cannonball/kit-cornpx skills add harebeats/cannonball --skill kit-corgit clone --depth 1 https://github.com/harebeats/cannonballWrote 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/harebeats/cannonball/kit-cor)<a href="https://agentmods.dev/skills/harebeats/cannonball/kit-cor"><img src="https://agentmods.dev/badge/skills/harebeats/cannonball/kit-cor.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00193 | $0.02977 |
| Opus 5 | $0.00097 | $0.01489 |
| Sonnet 5 | $0.00039 | $0.00595 |
| Haiku 4.5 | $0.00019 | $0.00298 |
Grade A, and why
kit-cor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 264 lines — stays where its author put it; the contents beside it link to each section on GitHub.
kit-cor — decidir a cor, em vez de herdar
Antes de qualquer comando: resolva o SKILL_DIR
Todo comando abaixo roda um script que viaja junto desta skill, em
SKILL_DIR/scripts/. Defina SKILL_DIR como o caminho absoluto da pasta que
contém ESTE SKILL.md que você acabou de ler — o seu harness informou esse caminho
no resultado da leitura. Funciona em qualquer hospedeiro, sem depender de variável
de ambiente de nenhum agente específico:
~/.claude/plugins/cache/cannonball/cannonball/<v>/skills/<nome>/SKILL.md
~/.codex/skills/<nome>/SKILL.md
~/.gemini/skills/<nome>/SKILL.md
~/.agents/skills/<nome>/SKILL.md
Em todos, SKILL_DIR é a pasta do SKILL.md, e SKILL_DIR/scripts/ está ao lado.
Um design system guarda as cores como lista plana: nenhuma diz qual é fundo, qual é tinta, qual é acento. Lista plana não se decide, só se copia — e copiar é exatamente a sensação de automático.
Pior: todo acervo de design system tem viés, e o viés é mensurável. Meça o seu antes de recomendar qualquer coisa:
python "${SKILL_DIR}/scripts/cor.py" --vies
Ele conta, dos design systems que você guardou, quantos têm acento neutro, azul, amarelo, quente, e quantos são tema claro. O padrão que aparece em quase todo acervo é o mesmo: cerca de metade cai em neutro ou azul, e a maioria é tema claro. Não porque o acervo é ruim — porque ele foi extraído de sites reais, e o mercado inteiro é assim.
A consequência prática: puxar design system por busca sem ter falado de cor devolve,
na média, exatamente o lugar-comum que o --vies acabou de medir.
Esta skill existe para que a cor seja escolhida antes do design system, e o design system sirva à cor — não o contrário.
0. A cor faz cinco trabalhos diferentes — decida qual
Antes de escolher matiz, decida para que a cor serve nesta peça. São cinco usos,
e eles pedem paletas diferentes (detalhe em
${SKILL_DIR}/references/fundamentos-visuais.md §5):
| Uso | O que a cor está fazendo |
|---|---|
| atenção | hierarquia, ritmo (acento repetido com matiz mudando), agrupamento por proximidade, ponto de entrada |
| percepção | profundidade (quente avança, frio recua), peso visual, valor |
| branding | conformidade ou fuga da categoria, e recall de memória |
| função | verde aprovado, amarelo atenção, vermelho descartar — lido antes do ícone |
| emoção | o que a pessoa sente antes de interpretar qualquer outra coisa |
What ships with it
51 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.
- references/fundamentos-visuais.md 19 KB
- references/getlayers.md 8.5 KB
- references/higgsfield.md 4.6 KB
- references/motionsites-genjutsu-designdna.md 7.0 KB
- references/stack-animacao.md 7.1 KB
- references/stack-webgl-react.md 13 KB
- scripts/armadilhas.py 4.8 KB runs code
- scripts/assets.py 4.8 KB runs code
- scripts/buscar.py 9.4 KB runs code
- scripts/caminhos.py 6.4 KB runs code
- scripts/cor.py 11 KB runs code
- scripts/curar.py 12 KB runs code
- scripts/fontes_licenca.json 19 KB
- scripts/indexar.py 9.9 KB runs code
- scripts/ingerir_design.py 6.7 KB runs code
- scripts/ingerir_mcp.py 7.6 KB runs code
- scripts/ingerir_projeto.py 10 KB runs code
- scripts/ingerir_registro.py 5.1 KB runs code
- scripts/ingerir.py 5.4 KB runs code
- scripts/lote.py 5.5 KB runs code
- scripts/normalizar.py 10.0 KB runs code
- scripts/painel.py 19 KB runs code
- scripts/perfil.py 10 KB runs code
- scripts/publicar.py 8.6 KB runs code
- scripts/receita.py 4.8 KB runs code
- scripts/relocalizar.py 6.0 KB runs code
- scripts/sinonimos.json 7.6 KB
- scripts/tags_funcao.py 5.8 KB runs code
- scripts/test_sinonimos.py 1.8 KB runs code
- scripts/tipo.py 22 KB runs code
- scripts/vincular.py 5.0 KB runs code
- seed/acervo/index.json 18 KB
- seed/acervo/ui/kit-agendamento/armadilhas.json 4.1 KB
- seed/acervo/ui/kit-agendamento/codigo/agendamento.css 8.0 KB
- seed/acervo/ui/kit-agendamento/codigo/Agendamento.tsx 13 KB
- seed/acervo/ui/kit-agendamento/codigo/regras.ts 4.8 KB runs code
- seed/acervo/ui/kit-agendamento/codigo/useAgendamento.ts 4.0 KB runs code
- seed/acervo/ui/kit-agendamento/item.json 1.7 KB
- seed/acervo/ui/kit-agendamento/README.md 6.2 KB
- seed/acervo/ui/kit-calendario/armadilhas.json 798 B
- seed/acervo/ui/kit-calendario/codigo/calendario.css 5.4 KB
- seed/acervo/ui/kit-calendario/codigo/Calendario.tsx 7.7 KB
- seed/acervo/ui/kit-calendario/codigo/useCalendario.ts 4.1 KB runs code
- seed/acervo/ui/kit-calendario/item.json 1.4 KB
- seed/acervo/ui/kit-calendario/README.md 3.9 KB
- seed/acervo/ui/kit-mapa/armadilhas.json 747 B
- seed/acervo/ui/kit-mapa/codigo/mapa.css 5.3 KB
- seed/acervo/ui/kit-mapa/codigo/Mapa.tsx 4.7 KB
- seed/acervo/ui/kit-mapa/item.json 1.6 KB
- seed/acervo/ui/kit-mapa/README.md 4.3 KB
- seed/LEIA.md 905 B
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.
- 4d ago First seen · 264 lines · 193 tokens per session scan A cf4da05b6567
kit-cor is a skill published in the GitHub repository harebeats/cannonball (2 stars, last pushed 7d ago), licensed MIT. It adds 193 tokens to every session and 2,977 once invoked, about $0.0010 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.
Other skills, from other repositories
port-sacred-terminal-ui-to-react-using-same-conventions
Take a CLI screen written for Simulacrum — the sacred CLI framework (scripts/cli/templates/.ts or scripts/python/templates/.py) — and produce a React component that lives inside components/examples/ (or components/) using only sacred's existing primitives — Window, Card, SimpleTable, ActionButton, RowSpaceBetween…
port-sacred-terminal-ui-to-typescript-cli
Take a React Window.tsx (or any sacred component) and produce a terminal CLI screen written in TypeScript that uses Simulacrum — the sacred CLI framework in scripts/cli/lib/.
designlang-tokens
Use when styling UI for cal.com — references the extracted design system tokens instead of inventing colors, spacing, or typography.
omd-apply
프로젝트 DESIGN.md를 UI/시각 작업의 brand context로 적용. 컴포넌트·색상·폰트·레이아웃 수정 같은 구체적 요청과 톤·분위기 표현 — KR '좀 더 따뜻하게', EN 'make it warmer/cooler', 日本語「もう少し暖かく」, 繁體中文「更溫暖一點」 — 모두에 트리거. DESIGN.md 부재 시 omd:init 우선. 화면 전체 신규 디자인은 omd:harness, 교정 기록은 omd:remember.
omd:autopilot
One-prompt autonomous product design and implementation. Use automatically for broad greenfield UI requests such as 'from scratch', '새 제품/화면을 알아서 만들어줘', or requests that delegate DESIGN.md creation. It decides whether to reuse, establish, refresh, or skip a project design system; asks at most one consequential…
omd:codex-image
이미지 placeholder를 동적으로 materialize. Codex 채널에서는 내장 image-generation primitive 호출, Claude Code 채널에서는 omd-asset-curator로 fall back, OpenCode에서는 spec dump. HTML/MD의 블록을 단일 source of truth로 사용. '이미지 생성해줘', '플레이스홀더 채워줘', '코덱스로 이미지 만들어' 류 트리거.