blueprint

blueprint is a skill for Claude Code from rp1-run/rp1. It costs 19 tokens per session (2,954 once invoked), scanned A, original, Apache-2.0.

A guided interview that creates or updates a project charter and a PRD. A PRD, or product requirements document, describes what a product should do and why.

In plain words
What is it for?
It helps define a project, gather requirements, and produce a durable plan for building the product.
Why use it?
It turns project discussions into saved documents and can resume unfinished work from those documents instead of relying on conversation history.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the rp1-dev plugin — 23 skills, 36 agents shipped together

Good fit It helps define a project, gather requirements, and produce a durable plan for building the product.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rp1-run/rp1/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.

Any agent
npx skills add rp1-run/rp1 --skill blueprint
Clone the repo
git clone --depth 1 https://github.com/rp1-run/rp1

Made for: Claude Code.

Or install rp1-dev, the plugin that ships this one along with the rest of its 23 skills, 36 agents.

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/skills/rp1-run/rp1/blueprint/github.svg)](https://agentmods.dev/skills/rp1-run/rp1/blueprint)
Your own site
<a href="https://agentmods.dev/skills/rp1-run/rp1/blueprint"><img src="https://agentmods.dev/badge/skills/rp1-run/rp1/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/skills/rp1-run/rp1/blueprint"><img src="https://agentmods.dev/badge/skills/rp1-run/rp1/blueprint.svg" alt="Reviewed on agentmods" width="80" 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 2,954 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 $0.00019 $0.02954
Opus 5 $0.00010 $0.01477
Sonnet 5 $0.00004 $0.00591
Haiku 4.5 $0.00002 $0.00295

Measured 2d ago against content hash f47b4a1691df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 2d 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/dev/skills/blueprint/SKILL.md · 244 lines

How it starts

The opening of the file, as written. The whole thing — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Blueprint

The top-level skill owns every user-facing question. The two retained agents are optional, bounded, non-interactive finalizers that run only after the parent's accepted answers are durable.

{% include_shared "parent-owned-interview.md" %}

STATE-MACHINE

stateDiagram-v2
    [*] --> detect
    detect --> charter : charter_needs_work
    detect --> prd : charter_complete
    charter --> prd : charter_complete
    prd --> [*] : prd_complete

On each phase transition, report with rp1 agent-tools emit using workflow blueprint, the generated {RUN_ID}, and the current state as --step. Derive RUN_NAME as Blueprint: {EFFECTIVE_PRD_NAME}. The first emit includes --name "{RUN_NAME}". Enter a non-terminal state with {"status":"running"}; finish prd with {"status":"completed"} and --close-run. On a fatal phase error, emit {"status":"failed"} for the current state before stopping.

Context

Use the pre-resolved projectRoot, kbRoot, and workRoot values from Workflow Bootstrap. They are authoritative and may point to different storage locations.

  • Charter: {kbRoot}/charter.md
  • PRD: PRD_PATH, derived after name validation as {workRoot}/prds/{EFFECTIVE_PRD_NAME}.md
  • Charter template: plugins/base/skills/artifact-templates/templates/charter-interviewer/charter.md
  • PRD template: plugins/base/skills/artifact-templates/templates/blueprint-wizard/prd.md

Procedure

1. Validate The PRD Name Before Effects

Set EFFECTIVE_PRD_NAME = PRD_NAME || "main".

Validate EFFECTIVE_PRD_NAME against ^[A-Za-z0-9][A-Za-z0-9_-]*$. Use the value exactly as validated; do not trim, sanitize, or rewrite it. If it does not match, explain that the name must begin with an ASCII letter or number and contain only ASCII letters, numbers, _, or -, then stop. This validation MUST happen before any artifact read, artifact write, user question, or agent dispatch.

After successful validation:

  1. Set PRD_PATH = {workRoot}/prds/{EFFECTIVE_PRD_NAME}.md. This is the sole writable PRD artifact path.
  2. Emit detect running.
  3. Read {kbRoot}/charter.md to begin artifact-only detection.

Read the full file on GitHub · 244 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. 2d ago First seen · 244 lines · 19 tokens per session scan A f47b4a1691df

Subscribe to this mod's changes

blueprint is a skill published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 3d ago), licensed Apache-2.0. It adds 19 tokens to every session and 2,954 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 2026-09-07.

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