agentmods.dev

constitution

A project-governance document that records the lasting principles guiding architecture, quality, and development decisions.

In plain words
What is it for?
Creating or updating project principles, checking whether plans align with them, and coordinating related project documents.
Why use it?
It gives later feature specifications and technical plans a shared set of rules to follow, instead of relying on inconsistent decisions.

Skill for Claude CodeCodex

Part of the cstk plugin — 21 skills, 7 commands, 7 agents shipped together

22 3d ago A scan 44 tokens original MIT
View the source file JotJunior/cstk
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 skills/jotjunior/cstk/constitution
Any agent
npx skills add JotJunior/cstk --skill constitution
Clone the repo
git clone --depth 1 https://github.com/JotJunior/cstk

Made for: Claude Code, Codex.

Or install cstk, the plugin that ships this one along with the rest of its 21 skills, 7 commands, 7 agents.

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,000 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 $0.00044 $0.03000
Opus 5 $0.00022 $0.01500
Sonnet 5 $0.00009 $0.00600
Haiku 4.5 $0.00004 $0.00300

Measured 3d ago against content hash 79dfc8e974c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

constitution 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 3d 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.

plugins/cstk/skills/constitution/SKILL.md · 306 lines

How it starts

The opening of the file, as written. The whole thing — 306 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Constituicao do Projeto

Crie ou atualize a constituicao do projeto — o documento de principios imutaveis que governa decisoes de arquitetura, qualidade e processo.

Pre-requisitos

Recomendado: /briefing executado antes. A constituicao deriva principios do contexto do projeto (visao, prioridades, restricoes) — sem briefing, os principios ficam genericos.

Opcional: docs/constitution.md existente (para atualizar em vez de criar do zero). A skill versiona via SemVer (MAJOR/MINOR/PATCH).

Proximos passos

  1. /specify — especificar features alinhadas aos principios
  2. /plan — planos tecnicos vao respeitar a constitution (Constitution Check como gate)
  3. /analyze — apos ter specs/plans/tasks, validar alinhamento contra a constitution

Argumentos

$ARGUMENTS

FLUXO DE EXECUCAO

1. CONTEXTO        Detectar projeto e constituicao existente
     |
2. COLETA          Coletar/derivar principios
     |
3. GERACAO         Preencher template com valores concretos
     |
4. PROPAGACAO      Verificar alinhamento com outros artefatos
     |
5. SALVAMENTO      Salvar e reportar

ETAPA 1: CONTEXTO

1.1 Detectar Projeto

Leia os seguintes arquivos (se existirem) para entender o contexto:

SEMPRE LER (se existirem):
-- README.md
-- CLAUDE.md
-- docs/constitution.md (constituicao existente)
-- docs/specs/*/spec.md (specs existentes)
-- package.json, go.mod, pyproject.toml (stack tecnica)

1.2 Verificar Constituicao Existente

Procure constituicao existente nesta ordem:

  1. docs/constitution.md
  2. constitution.md

Se encontrada:

  • Carregar conteudo atual
  • Identificar placeholders [ALL_CAPS_IDENTIFIER] nao preenchidos
  • Propor atualizacoes baseadas no input do usuario

Se nao encontrada:

  • Seguir para coleta de principios (Etapa 2)

ETAPA 2: COLETA DE PRINCIPIOS

2.1 Fontes de Principios

Analise o argumento fornecido ($ARGUMENTS). Ele pode ser:

  1. Descricao do projeto: Inferir principios a partir do contexto
  2. Lista de principios: Usar diretamente
  3. Numero de principios: Respeitar a quantidade solicitada
  4. Vazio: Inferir do contexto do projeto e perguntar ao usuario

Read the full file on GitHub · 306 lines

Files

What ships with it

2 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.

  1. 3d ago First seen · 306 lines · 44 tokens per session scan A 79dfc8e974c3

Subscribe to this mod's changes

constitution is a skill published in the GitHub repository JotJunior/cstk (22 stars, last pushed 3d ago), licensed MIT. It adds 44 tokens to every session and 3,000 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.

PlanningWriting and docs
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