speckit-constitution

speckit-constitution is a skill for Claude Code, Codex from ldilov/harness-forge. It costs 27 tokens per session (1,774 once invoked), scanned A, original, GPL-3.0.

A project-guidelines document created or updated from supplied principles. It also keeps related templates aligned with those guidelines.

In plain words
What is it for?
Defining or revising project rules, then synchronizing dependent templates.
Why use it?
It prevents the project's stated principles and its supporting templates from drifting apart.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit Defining or revising project rules, then synchronizing dependent templates.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ldilov/harness-forge/speckit-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 ldilov/harness-forge --skill speckit-constitution
Clone the repo
git clone --depth 1 https://github.com/ldilov/harness-forge

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/ldilov/harness-forge/speckit-constitution.svg)](https://agentmods.dev/skills/ldilov/harness-forge/speckit-constitution)
Your own site
<a href="https://agentmods.dev/skills/ldilov/harness-forge/speckit-constitution"><img src="https://agentmods.dev/badge/skills/ldilov/harness-forge/speckit-constitution.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,774 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 unknown 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 $0.00027 $0.01774
Opus 5 $0.00014 $0.00887
Sonnet 5 $0.00005 $0.00355
Haiku 4.5 $0.00003 $0.00177

Measured 7d ago against content hash 7310adee465e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 7d 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.

.agents/skills/speckit-constitution/SKILL.md · 153 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 7d ago First seen · 153 lines · 27 tokens per session scan A 7310adee465e

Subscribe to this mod's changes

speckit-constitution is a skill published in the GitHub repository ldilov/harness-forge (4 stars, last pushed 3mo ago), licensed GPL-3.0. It adds 27 tokens to every session and 1,774 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.

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