constitution

constitution is a skill for Claude Code, Codex from akka/ai-marketplace. It costs 23 tokens per session (1,401 once invoked), scanned A, original, Apache-2.0.

A tool for creating or updating a project's constitution: a document of the project's guiding principles and rules. It also keeps related templates aligned with those principles.

In plain words
What is it for?
Filling constitution templates from user input, updating project principles, and synchronizing dependent project artifacts.
Why use it?
It prevents project guidance from remaining as empty placeholders or becoming inconsistent across dependent documents.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Filling constitution templates from user input, updating project principles, and synchronizing dependent project artifacts.

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Install with agentmods
npx agentmods add skills/akka/ai-marketplace/constitution
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 akka/ai-marketplace --skill constitution
Clone the repo
git clone --depth 1 https://github.com/akka/ai-marketplace

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 constitution

README.md
[![agentmods](https://agentmods.dev/badge/skills/akka/ai-marketplace/constitution/github.svg)](https://agentmods.dev/skills/akka/ai-marketplace/constitution)
Your own site
<a href="https://agentmods.dev/skills/akka/ai-marketplace/constitution"><img src="https://agentmods.dev/badge/skills/akka/ai-marketplace/constitution/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for constitution

Your own site · 80×15
<a href="https://agentmods.dev/skills/akka/ai-marketplace/constitution"><img src="https://agentmods.dev/badge/skills/akka/ai-marketplace/constitution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,401 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00023 $0.01401
Opus 5 $0.00012 $0.00700
Sonnet 5 $0.00005 $0.00280
Haiku 4.5 $0.00002 $0.00140

Measured 9d ago against content hash 072902544c81, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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.

skills/constitution/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

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

Outline

You are updating the project constitution (via the akka_sdd_constitution MCP tool). This file is a TEMPLATE containing placeholder tokens in square brackets (e.g. [PROJECT_NAME], [PRINCIPLE_1_NAME]). Your job is to (a) collect/derive concrete values, (b) fill the template precisely, and (c) propagate any amendments across dependent artifacts.

Note: If the project constitution does not exist yet, it should have been initialized from .akka/templates/constitution-template.md during project setup. If it's missing, copy the template first.

Follow this execution flow:

  1. Load the existing constitution at the project constitution (via akka_sdd_constitution).

    • Identify every placeholder token of the form [ALL_CAPS_IDENTIFIER]. IMPORTANT: The user might require less or more principles than the ones used in the template. If a number is specified, respect that - follow the general template. You will update the doc accordingly.
  2. Collect/derive values for placeholders:

    • If user input (conversation) supplies a value, use it.
    • Otherwise infer from existing repo context (README, docs, prior constitution versions if embedded).
    • For governance dates: RATIFICATION_DATE is the original adoption date (if unknown ask or mark TODO), LAST_AMENDED_DATE is today if changes are made, otherwise keep previous.
    • CONSTITUTION_VERSION must increment according to semantic versioning rules:
      • MAJOR: Backward incompatible governance/principle removals or redefinitions.
      • MINOR: New principle/section added or materially expanded guidance.
      • PATCH: Clarifications, wording, typo fixes, non-semantic refinements.
    • If version bump type ambiguous, propose reasoning before finalizing.
  3. Draft the updated constitution content:

    • Replace every placeholder with concrete text (no bracketed tokens left except intentionally retained template slots that the project has chosen not to define yet—explicitly justify any left).
    • Preserve heading hierarchy and comments can be removed once replaced unless they still add clarifying guidance.
    • Ensure each Principle section: succinct name line, paragraph (or bullet list) capturing non‑negotiable rules, explicit rationale if not obvious.
    • Ensure Governance section lists amendment procedure, versioning policy, and compliance review expectations.

Read the full file on GitHub · 90 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. 9d ago First seen · 90 lines · 23 tokens per session scan A 072902544c81

Subscribe to this mod's changes

constitution is a skill published in the GitHub repository akka/ai-marketplace (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 23 tokens to every session and 1,401 once invoked, about $0.0001 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.