bf-ui

bf-ui is a skill for Claude Code from chan4lk/specclaw. It costs 233 tokens per session (3,520 once invoked), scanned A, original, MIT.

A UI-analysis workstream for rebuilding an existing application. It records each screen's structure, visual theme, design tokens, and a human screenshot-capture checklist.

In plain words
What is it for?
It helps document screens, navigation, layout regions, visual styles, and reusable design values before rebuilding a legacy app.
Why use it?
It gives a rebuild team a written reference for deciding how closely the new interface should follow the old one, without treating screenshots as automated proof of identical pixels.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the specclaw plugin — 32 skills, 21 agents shipped together

Good fit It helps document screens, navigation, layout regions, visual styles, and reusable design values before rebuilding a legacy app.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chan4lk/specclaw/bf-ui
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 chan4lk/specclaw --skill bf-ui
Clone the repo
git clone --depth 1 https://github.com/chan4lk/specclaw

Made for: Claude Code.

Or install specclaw, the plugin that ships this one along with the rest of its 32 skills, 21 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 bf-ui

README.md
[![agentmods](https://agentmods.dev/badge/skills/chan4lk/specclaw/bf-ui.svg)](https://agentmods.dev/skills/chan4lk/specclaw/bf-ui)
Your own site
<a href="https://agentmods.dev/skills/chan4lk/specclaw/bf-ui"><img src="https://agentmods.dev/badge/skills/chan4lk/specclaw/bf-ui.svg" alt="Measured on agentmods" height="20"></a>
Per session 233 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,520 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00233 $0.03520
Opus 5 $0.00117 $0.01760
Sonnet 5 $0.00047 $0.00704
Haiku 4.5 $0.00023 $0.00352

Measured 2d ago against content hash 99e140c0be33, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

bf-ui 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/specclaw/skills/bf-ui/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

specclaw bf-ui

First, run specclaw-ensure-init .specclaw — idempotently creates .specclaw/ if it doesn't exist (silent if already initialized; auto-inits using the current directory's basename as the project name).

Extract, capture, and review the UI-fidelity dimension of a rebuild. Read-only side-command — no specclaw-validate-change call, no <change> gate, matching the analyze/architecture/domain/clarify/baseline/rebuild-plan pattern.

This command is optional and never required. The whole brownfield pipeline works without it. /specclaw:bf-clarify asks the UI fidelity policy question (SQ-013) whether or not this command was ever run, and /specclaw:bf-rebuild-plan only requires UI grounding when that policy is decided FAITHFUL or THEME-ONLY. A project on REINTERPRET answers one question and is done.

UI is never a golden-master seam. templates/seams.md's ## Excluded: UI Automation class stands unchanged, and /specclaw:bf-replay is untouched by this command except for one informational footer line. Nothing this command produces is replayable, diffable, or a proof of pixel-identity — visual fidelity is established by a human reviewing recorded evidence (Mode C's ui-review.md), and this command must never be described as doing more than that.

Determine the mode from the user's message:

If the message contains Mode
--record Mode B — record the human's captures
--checklist <change-name> Mode C — generate the review table (run in the NEW repo)
neither Mode A — design/extract (default)

Mode A — design / extract (default: no flag)

Run this in the legacy repo, after /specclaw:bf-domain (its domain-model.md and functional-spec.md are what the widget cross-reference keys against) and before /specclaw:bf-clarify (so any pending question this run raises is ingested in the same clarify sweep).

  1. Collect:
    specclaw-bf-ui collect .specclaw [path]
    
    [path] defaults to the repository root when omitted. This parses the prior ui-inventory.md/design-tokens.json for their permanent SCR-###/TK-### assignments before archiving all three prior Mode A outputs into .specclaw/ui/archive/, then emits one JSON object: resolved paths, those prior id assignments, the next free ids, which analysis documents are present, the legacy repo's HEAD sha, and a stack-agnostic extension histogram of every file in scope. If it exits non-zero, surface its stderr message to the user verbatim and stop — don't retry, don't guess a different path.

Read the full file on GitHub · 120 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 · 120 lines · 0 tokens per session scan A 99e140c0be33

Subscribe to this mod's changes

bf-ui is a skill published in the GitHub repository chan4lk/specclaw (12 stars, last pushed 3d ago), licensed MIT. It adds 233 tokens to every session and 3,520 once invoked, about $0.0012 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 2026-09-05.

Related

Other skills, from other repositories

from-intake

A workflow for reviewing material brought from another workspace and carrying relevant brand evidence into the project's assets. It checks inventories, brand guides, logos, and image sources before anything is used.

TOKTOKHAN-DEV/agent-company · 3 tokens

build-screen

A workflow for implementing one specified app screen with Toss Design System components and adding it to the app's route list. It also requires empty, loading, and failure states, with a way to retry after failure.

TOKTOKHAN-DEV/agent-company · 2 tokens

ui-designer

Aura - Senior UI/UX Design Architect with 12+ years creating premium digital experiences. Use when designing landing pages, dashboards, mobile apps, design systems, component libraries, or brand-aligned UI. Specializes in React/Tailwind/Framer Motion prototypes, responsive design, micro-interactions, and…

olehsvyrydov/AI-development-team · 83 tokens

ux-researcher

UX Researcher (/ux) — the research side of UX: user interviews, surveys, usability testing, personas, journey maps, information architecture, card sorting, jobs-to-be-done, and turning findings into prioritized design requirements. Use when you need to understand users, validate a concept, define IA/navigation, plan…

olehsvyrydov/AI-development-team · 124 tokens

options

Present multiple design options as a vertical stack of anchored turns.

asgeirtj/system_prompts_leaks · 13 tokens

qa-test-planner

Generate comprehensive test plans, manual test cases, regression test suites, and bug reports for QA engineers. Includes Figma MCP integration for design validation.

davila7/claude-code-templates · 34 tokens