blueprint

blueprint is a command for Claude Code from Zts0hg/codexspec. It costs 28 tokens per session (3,629 once invoked), scanned A, original, MIT.

A command for discussing and maintaining confirmed product requirements in one shared product blueprint.

In plain words
What is it for?
It is for discovering or updating a requirement, confirming it, and maintaining the project's shared blueprint.
Why use it?
It keeps agreed requirements in a central document and prevents the discussion step from being mixed with implementation work.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Good fit It is for discovering or updating a requirement, confirming it, and maintaining the project's shared blueprint.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/zts0hg/codexspec/blueprint
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.

Clone the repo
git clone --depth 1 https://github.com/Zts0hg/codexspec

Made for: Claude Code.

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 blueprint

README.md
[![agentmods](https://agentmods.dev/badge/commands/zts0hg/codexspec/blueprint/github.svg)](https://agentmods.dev/commands/zts0hg/codexspec/blueprint)
Your own site
<a href="https://agentmods.dev/commands/zts0hg/codexspec/blueprint"><img src="https://agentmods.dev/badge/commands/zts0hg/codexspec/blueprint/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 blueprint

Your own site · 80×15
<a href="https://agentmods.dev/commands/zts0hg/codexspec/blueprint"><img src="https://agentmods.dev/badge/commands/zts0hg/codexspec/blueprint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,629 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 $0.00028 $0.03629
Opus 5.5 $0.00011 $0.01452
Sonnet 5.5 $0.00006 $0.00726
Haiku 4.5 $0.00003 $0.00363

Measured 5d ago against content hash 7e61aab6a146, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

blueprint 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.

.claude/commands/codexspec/blueprint.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blueprint Requirements Discovery

Language Preference

Read .codexspec/config.yml. Two independent language controls apply (each falls back to language.output, then English):

  • Interaction language (language.interaction): language for all conversation with the user.
  • Document language (language.document): language for requirements Markdown sent to the helper.

Converse in the interaction language and author requirement content in the document language. Use clear, standard software-development terminology; do not invent abbreviations to summarize concepts.

Expression Standard

IMPORTANT: Everything this command produces — documents, reviews, reports, commit messages, diagnostics, and replies — is written for a reader who cannot see your working context. Apply the rules below to every artifact and message you output:

  • Write for the reader at hand-off. Every reference must resolve without access to this session: no session-only identifiers or section numbers, no narration of what changed during the conversation, no arguments with absent reviewers. State current reality and cite committed, reachable sources.
  • Preserve every proposition. Before summarizing or trimming, list the facts a passage carries: actors, conditions, ordering, modalities (must, never), negative guarantees, and consequences. Remove only reasoning transcripts, repetition, and decoration. Shorter is not clearer if any fact is lost.
  • State what the surface requires. Diagnostics name what failed, which rule was violated, and the correction. Problem reports carry the defect, its location, its impact, and the evidence. Decisions record the alternatives they beat. Rejections give the reason in one line. Shipped work is described in the present tense; plans and open questions are labeled as such.
  • Define terms before relying on them. Prefer the concrete rule, field, or behavior over a coined label; give a project-specific term a plain-language definition at first use, then use it consistently.
  • Be honest, not agreeable. Verify claims before accepting them; fix or rebut on technical grounds. One substantiated blocker is worth more than a list of nitpicks. When a decision is needed, present only viable options, recommend one, and state the real difference between them.
  • Declare what is binding. Say explicitly which instructions are hard requirements and where judgment is required. Keep one explanation in one place and link to it, but keep at the point of use the contract a reader needs there.

Read the full file on GitHub · 265 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 Changed · +17 tokens per session 7e61aab6a146
  2. 11d ago Changed · +16 lines 1e922f3c5a17
  3. 12d ago Changed · +37 lines 1638f8098fc4
  4. 19d ago Changed · +72 lines 65f8329c6f3f
  5. 1mo ago Changed · +11 lines 4d60c7c75709
  6. 1mo ago First seen · 129 lines · 11 tokens per session scan A a51c05fce7cb

Subscribe to this mod's changes

blueprint is a command published in the GitHub repository Zts0hg/codexspec (5 stars, last pushed 4d ago), licensed MIT. It adds 28 tokens to every session and 3,629 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-03.