bifrost: Skill for Claude Code

.agents/skills/design-md/SKILL.md

design-md is a skill for Claude Code, Codex from bifrost-proxy/bifrost. It costs 58 tokens per session (477 once invoked), scanned A, original, MIT.

A guide for changing the Bifrost WebUI, desktop interface, public website, or documentation design. It uses DESIGN.md as the project's written design contract for colors, typography, spacing, layouts, and interactions.

In plain words
What is it for?
Use it when changing UI layouts, navigation, dashboards, tables, modals, panels, website or documentation styling, or user-facing interaction copy.
Why use it?
It helps keep visual and interaction changes consistent across the product and between light and dark modes, while preserving the intended density of operational screens.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is bifrost-proxy/bifrost's own configuration. It tells Claude Code and Codex how to work on bifrost itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything bifrost configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bifrost-proxy/bifrost. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bifrost-proxy/bifrost/main/.agents/skills/design-md/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/bifrost-proxy/bifrost

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 design-md

README.md
[![agentmods](https://agentmods.dev/badge/skills/bifrost-proxy/bifrost/design-md/github.svg)](https://agentmods.dev/skills/bifrost-proxy/bifrost/design-md)
Your own site
<a href="https://agentmods.dev/skills/bifrost-proxy/bifrost/design-md"><img src="https://agentmods.dev/badge/skills/bifrost-proxy/bifrost/design-md/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 design-md

Your own site · 80×15
<a href="https://agentmods.dev/skills/bifrost-proxy/bifrost/design-md"><img src="https://agentmods.dev/badge/skills/bifrost-proxy/bifrost/design-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 477 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 $0.00058 $0.00477
Opus 5.5 $0.00023 $0.00191
Sonnet 5.5 $0.00012 $0.00095
Haiku 4.5 $0.00006 $0.00048

Measured 1mo ago against content hash 09978f833049, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

design-md 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 1mo 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/design-md/SKILL.md · 45 lines

What it actually says

Bifrost DESIGN.md

This skill keeps Bifrost product interaction work consistent across agents and sessions.

When to Use

Use this skill before modifying:

  • web/ UI, layout, theme, navigation, dashboards, tables, modals, panels, or interaction copy
  • desktop/ shell UI and desktop-specific chrome
  • site/, docs/, or docs-en/ visual style, homepage, navigation, screenshots, or docs theme
  • any user-facing feature where color, density, component choice, spacing, typography, or visual hierarchy could drift

Required Reading

  1. Read DESIGN.md from the repository root.
  2. For process and verification details, read design/design-md-system.md.
  3. If the change touches site deployment, also follow the root AGENTS.md site deployment boundary.

Working Rules

  • Treat DESIGN.md YAML front matter as the normative design-token source.
  • Treat the Markdown sections as rationale for how to apply those tokens.
  • Prefer existing Ant Design tokens in web/ and the existing CSS variables in site/home/styles.css.
  • Keep operational UI dense, stable, and scan-friendly. Do not turn WebUI screens into marketing layouts.
  • Preserve light/dark parity. If a new color is needed in WebUI, route it through Ant Design token usage, CSS variables, or a documented DESIGN.md token.
  • Use icons for tool actions when an established icon exists; use text buttons only for clear commands.
  • Keep card usage restrained: repeated items, modals, and genuinely framed tools.
  • When editing DESIGN.md, run pnpm design:lint.

Verification

For design-token or design-rule changes:

pnpm design:lint

For UI implementation changes, add the normal module tests plus human_tests coverage required by the repository. At minimum, verify light and dark theme behavior for WebUI changes and record the result in the relevant human_tests/ document.

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. 1mo ago First seen · 45 lines · 58 tokens per session scan A 09978f833049

Subscribe to this mod's changes

design-md is a skill published in the GitHub repository bifrost-proxy/bifrost (165 stars, last pushed 2d ago), licensed MIT. It adds 58 tokens to every session and 477 once invoked, about $0.0002 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 2026-08-30.