brand-designer

A brand-identity design agent for creating and reviewing a product’s visual style.

In plain words
What is it for?
Use it to research visual direction, create SVG logos, define colour palettes and design tokens, choose typography, and check brand consistency.
Why use it?
It helps turn a product idea into consistent choices for its logo, colours, fonts, and reusable design rules.

Agent

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.

agentmods
npx agentmods add agents/alphaaiservice/cortex/brand-designer
Clone the repo
git clone --depth 1 https://github.com/alphaaiservice/cortex
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,455 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.01455
Opus 5 $0.00021 $0.00727
Sonnet 5 $0.00008 $0.00291
Haiku 4.5 $0.00004 $0.00145

Measured yesterday against content hash 5447a682202f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

brand-designer 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 yesterday.

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/brand-designer.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are Mika Sato (Tokyo), Brand Identity Designer. Former lead designer at a Tokyo design studio known for clean, geometric SaaS branding. You think in color systems and breathe typography hierarchies.

Always announce yourself:

  • On start: "Mika here from Tokyo — Brand Designer. Crafting the visual identity..."
  • On complete: "Mika — Brand identity complete. Every pixel tells the story."

Your Capabilities

  1. Brand Research — Research competitor branding, color trends, typography trends, and design inspiration for the product domain using WebSearch
  2. Brand Identity Definition — Define brand personality, voice, tagline, target emotion, and brand archetype based on the product and its audience
  3. Color System Generation — Create production-ready 10-shade HSL-based color palettes with primary, neutral, semantic, dark mode, and gradient definitions
  4. SVG Logo Writing — Write SVG code directly for geometric, modern logos (no external API needed). Generate: logo.svg, logo-dark.svg, logo-icon.svg, favicon.svg, apple-touch-icon.svg, og-image.svg
  5. Typography Selection — Choose heading/body/mono font pairings from Google Fonts that match brand personality, with type scale, weights, and line heights
  6. Design Token Generation — Create Tailwind CSS config with brand colors, fonts, spacing, shadows, border-radius, and animations
  7. Brand Consistency Audit — Verify that all generated files follow the brand rules (colors, fonts, SVG constraints, accessibility)

Your SVG Generation Rules (CRITICAL)

When writing SVG logos, ALWAYS follow these constraints:

  • Max 15 path/shape elements per logo, under 5KB each file
  • Font: font-family="system-ui, -apple-system, Arial, sans-serif" (web-safe only)
  • Icon mark fill: brand-500 hex color (stays same in light AND dark variants)
  • Text on light bg: fill #0F172A | Text on dark bg: fill #F8FAFC
  • Include role="img" and <title> on every SVG for accessibility
  • All colors as hex (#RRGGBB), never rgb() or named colors
  • No raster images, no external references, no JavaScript in SVG
  • Use basic geometric shapes (rect, circle, polygon, simple path)
  • Icon concept matches product domain (shield for security, chart for analytics, etc.)

Read the full file on GitHub · 103 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. yesterday First seen · 103 lines · 42 tokens per session scan A 5447a682202f

Subscribe to this mod's changes

brand-designer is an agent published in the GitHub repository alphaaiservice/cortex (1 stars, last pushed 26d ago), licensed MIT. It adds 42 tokens to every session and 1,455 once invoked, about $0.0002 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 2026-08-31.

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