speckit-constitution

speckit-constitution is a skill for Claude Code, Codex from stefaniuk/loadout. It costs 19 tokens per session (2,249 once invoked), scanned A, a copy of speckit-constitution, MIT.

A workflow for creating or updating a project's constitution: a written set of governing principles for the project. It considers supplied principles while keeping unrelated implementation requests out of this step.

In plain words
What is it for?
Use it to establish or revise project principles within a Spec Kit workflow, including deciding which parts of a user's input belong in the constitution.
Why use it?
It prevents governance decisions from being mixed with feature coding or other source-file changes. The resulting principles can guide later project workflows.

Skill for Claude CodeCodex

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/stefaniuk/loadout/speckit-constitution
Any agent
npx skills add stefaniuk/loadout --skill speckit-constitution
Clone the repo
git clone --depth 1 https://github.com/stefaniuk/loadout

Made for: Claude Code, Codex.

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 speckit-constitution

README.md
[![agentmods](https://agentmods.dev/badge/skills/stefaniuk/loadout/speckit-constitution.svg)](https://agentmods.dev/skills/stefaniuk/loadout/speckit-constitution)
Your own site
<a href="https://agentmods.dev/skills/stefaniuk/loadout/speckit-constitution"><img src="https://agentmods.dev/badge/skills/stefaniuk/loadout/speckit-constitution.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,249 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 72% 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 $0.00019 $0.02249
Opus 5 $0.00010 $0.01125
Sonnet 5 $0.00004 $0.00450
Haiku 4.5 $0.00002 $0.00225

Measured 5d ago against content hash 276f0eac1819, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

speckit-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 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

72% identical to speckit-constitution — 81 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.

.github/skills/speckit-constitution/SKILL.md · 189 lines

How it starts

The opening of the file, as written. The whole thing — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Workflow Mode Guard

Use this skill only when the active local workflow mode is speckit.

Before proceeding:

  • Run ./scripts/hooks/workflow-mode.sh status.
  • If the active mode is superpowers, stop and tell the user to switch with make workflow-use mode=speckit or continue with the Superpowers workflow instead.
  • Do not mix speckit-* commands with Superpowers workflow skills in the same session or worktree.

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Scope Guard

This command's own work is limited to updating the project constitution itself. Dependent templates and commands read the constitution at runtime and are not modified here.

  • Classify every part of the user input as either constitution content or a separate, non-governance intent.
  • If the input includes feature implementation, code generation, refactoring, building, or deployment requests, you MUST NOT execute them. Extract them as deferred intents instead.
  • You MUST NOT create, modify, or delete application source files, feature routes, components, tests, deployment files, or other artifacts unrelated to the constitution workflow.
  • If it is unclear whether an instruction is constitution content, ask for clarification before making changes.
  • After completing the constitution update, include a Next Actions section for each deferred intent. List the original intent and suggest the appropriate follow-up Spec Kit command, such as /speckit-specify, without invoking it.
  • If there are no non-governance intents, omit the Next Actions section.

Pre-Execution Checks

Check for extension hooks (before constitution update):

  • Check if .specify/extensions.yml exists in the project root.
  • If it exists, read it and look for entries under the hooks.before_constitution key
  • If the YAML cannot be parsed or is invalid, skip hook checking silently and continue normally
  • Filter out hooks where enabled is explicitly false. Treat hooks without an enabled field as enabled by default.
  • For each remaining hook, do not attempt to interpret or evaluate hook condition expressions:
    • If the hook has no condition field, or it is null/empty, treat the hook as executable
    • If the hook defines a non-empty condition, skip the hook and leave condition evaluation to the HookExecutor implementation
  • When constructing command invocations from hook command names, replace dots (.) with hyphens (-). For example, speckit.git.commit/speckit-git-commit.
  • For each executable hook, output the following based on its optional flag:
    • Optional hook (optional: true):
      ## Extension Hooks
      
      **Optional Pre-Hook**: {extension}
      Command: `/{command}`
      Description: {description}
      
      Prompt: {prompt}
      To execute: `/{command}`
      
    • Mandatory hook (optional: false):
      ## Extension Hooks
      
      **Automatic Pre-Hook**: {extension}
      Executing: `/{command}`
      EXECUTE_COMMAND: {command}
      
      Wait for the result of the hook command before proceeding to the Outline.
      
      After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal {command} id shown above, e.g. a skills-mode agent runs it as /skill:speckit-... or $speckit-...). Emitting the block alone does not run the hook.
  • If no hooks are registered or .specify/extensions.yml does not exist, skip silently

Read the full file on GitHub · 189 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 · 189 lines · 19 tokens per session scan A 276f0eac1819

Subscribe to this mod's changes

speckit-constitution is a skill published in the GitHub repository stefaniuk/loadout (1 stars, last pushed 3d ago), licensed MIT. It adds 19 tokens to every session and 2,249 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 72% identical to speckit-constitution, differing in 81 lines, and is treated as a copy.

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