blueprint

blueprint is a skill for Claude Code from big-emotion/agent-atelier. It costs 0 tokens per session (5,741 once invoked), scanned A, original, MIT.

A tool for turning an existing frontend codebase into a detailed set of specifications for rebuilding or migrating it. It can document views, types, behavior, and visual details, then check the result for gaps.

In plain words
What is it for?
Use it to scan a frontend, choose which screens and areas to document, extract specifications, review screenshots, and prepare a rebuild-readiness checklist.
Why use it?
It reduces the need to understand and document a frontend manually before recreating it. It also helps find missing details and compare screenshots with the written specifications.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the frontend-fidelity plugin — 3 skills shipped together

Good fit Use it to scan a frontend, choose which screens and areas to document, extract specifications, review screenshots, and prepare a rebuild-readiness checklist.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/big-emotion/agent-atelier/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 big-emotion/agent-atelier --skill blueprint
Clone the repo
git clone --depth 1 https://github.com/big-emotion/agent-atelier

Made for: Claude Code.

Or install frontend-fidelity, the plugin that ships this one along with the rest of its 3 skills.

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/big-emotion/agent-atelier/blueprint/github.svg)](https://agentmods.dev/skills/big-emotion/agent-atelier/blueprint)
Your own site
<a href="https://agentmods.dev/skills/big-emotion/agent-atelier/blueprint"><img src="https://agentmods.dev/badge/skills/big-emotion/agent-atelier/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/big-emotion/agent-atelier/blueprint"><img src="https://agentmods.dev/badge/skills/big-emotion/agent-atelier/blueprint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,741 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 $0.00000 $0.05741
Opus 5.5 $0.00000 $0.02296
Sonnet 5.5 $0.00000 $0.01148
Haiku 4.5 $0.00000 $0.00574

Measured 2mo ago against content hash 31a75893b4f1, 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 2mo 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/frontend-fidelity/skills/blueprint/SKILL.md · 702 lines

How it starts

The opening of the file, as written. The whole thing — 702 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blueprint — Frontend Spec Pipeline

Extract a complete specs/ directory from any frontend codebase. Covers all 12 axes needed to rebuild or migrate a frontend app. Produces ~80% quality on first pass, refined to ~95% through guided iteration.

Input: $ARGUMENTS = <command> [options]

Commands:

  • discover — Scan codebase, create specs/_pipeline.md
  • scope — Interactive: select views and axes to spec
  • extract [--view <name>] [--axis <name>] — Extract specs (all, or resume one)
  • incorporate [--dir <path>] — Analyze screenshots against visual specs
  • refine [--fix <RF-NN>] — Quality audit, generate checklist
  • finalize — Cross-references, known-gaps, rebuild-readiness
  • run — Auto-advance state machine through all phases

Examples:

  • /blueprint run — full pipeline from scratch (pauses at scope)
  • /blueprint discover — scan only, create _pipeline.md
  • /blueprint scope — select views interactively
  • /blueprint extract — extract all pending axes
  • /blueprint extract --view home — re-extract one view's functional spec
  • /blueprint extract --axis types — re-extract just the types axis
  • /blueprint incorporate — analyze screenshots in specs/baseline/
  • /blueprint refine — run quality audit
  • /blueprint refine --fix RF-03 — address one checklist item
  • /blueprint finalize — generate cross-refs + meta docs

Phase 0: Parse $ARGUMENTS

Read $ARGUMENTS. The first token is the command. Parse as follows:

If $ARGUMENTS is empty or missing:
  → Print usage help (command list + examples above) and stop.

Commands:
  discover    → Jump to Phase 1
  scope       → Jump to Phase 2
  extract     → Jump to Phase 3
    Flags: --view <name>  (extract only the named view's functional + visual specs)
           --axis <name>  (extract only the named axis)
  incorporate → Jump to Phase 4
    Flags: --dir <path>  (custom screenshot directory; default: specs/baseline/)
  refine      → Jump to Phase 5
    Flags: --fix <RF-NN>  (address a specific checklist item only)
  finalize    → Jump to Phase 6
  run         → Jump to Orchestrator

Unknown command:
  → Print "Unknown command: {token}. Valid commands: run, discover, scope, extract, incorporate, refine, finalize." and stop.

Read the full file on GitHub · 702 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 702 lines · 0 tokens per session scan A 31a75893b4f1

Subscribe to this mod's changes

blueprint is a skill published in the GitHub repository big-emotion/agent-atelier (3 stars, last pushed 24d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 5,741 tokens. 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.

Related

blueprint compared with skills from other repositories

blueprint next to 6 skills from other repositories
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