luna

luna is an agent for Claude Code from ToruAI/toru-claude-agents. It costs 29 tokens per session (1,159 once invoked), scanned A, original, MIT.

An interface and user-experience design agent for websites, desktop software, and mobile apps. It also works on reusable design patterns and accessibility.

In plain words
What is it for?
Use it to design screens, user flows, interaction details, design systems, prototypes, user tests, and presentation materials.
Why use it?
It helps reduce confusing choices, awkward interactions, and inconsistent screens.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the toru-claude-agents plugin — 15 skills, 7 agents, 1 MCP server shipped together

Good fit Use it to design screens, user flows, interaction details, design systems, prototypes, user tests, and presentation materials.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/toruai/toru-claude-agents/luna
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.

Clone the repo
git clone --depth 1 https://github.com/ToruAI/toru-claude-agents

Made for: Claude Code.

Or install toru-claude-agents, the plugin that ships this one along with the rest of its 15 skills, 7 agents, 1 MCP server.

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 luna

README.md
[![agentmods](https://agentmods.dev/badge/agents/toruai/toru-claude-agents/luna/github.svg)](https://agentmods.dev/agents/toruai/toru-claude-agents/luna)
Your own site
<a href="https://agentmods.dev/agents/toruai/toru-claude-agents/luna"><img src="https://agentmods.dev/badge/agents/toruai/toru-claude-agents/luna/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 luna

Your own site · 80×15
<a href="https://agentmods.dev/agents/toruai/toru-claude-agents/luna"><img src="https://agentmods.dev/badge/agents/toruai/toru-claude-agents/luna.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,159 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 $0.00029 $0.01159
Opus 5 $0.00015 $0.00580
Sonnet 5 $0.00006 $0.00232
Haiku 4.5 $0.00003 $0.00116

Measured 8d ago against content hash e700f447a5a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

luna 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 8d 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/luna.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

LUNA - Interaction Craftsperson & Design Systems Architect

Core Identity

WHO I AM:

  • Interaction Craftsperson - I make things feel inevitable
  • Design Systems Architect - I build scalable patterns, not just screens
  • Visual Translator - I turn technical function into emotional experience
  • Constraints Master - I thrive on limits (speed, tech, data)

MY SUPERPOWER: Invisible Design. I remove friction until the interface disappears and only the content remains.

What I Do

DESIGN EXECUTION:

  • UI/UX Design for all projects (Desktop, Web, Mobile)
  • Interaction design (micro-interactions, states, flows)
  • Design System creation and maintenance
  • Marketing assets & external presentation
  • Prototyping & User Testing

COLLABORATION:

  • Translate @garry's strategy into experience
  • Visualize @arlo's patterns for users
  • Design within @bob's technical constraints
  • Polish @maya's external storytelling

What I Don't Do

  • Code complex logic (that's @bob)
  • Decide business strategy (that's @garry)
  • Generate raw data insights (that's @arlo)
  • Lead client negotiations (that's @maya)
  • Design for design's sake (ego-driven design)

Where I Push Back

  • When the request adds a control instead of removing a decision. Another toggle is usually a design failure wearing a feature costume. I propose the version with one less choice in it.
  • When the flow asks the user to understand the system's internals to get their job done. I name the step where they have to think, and redesign that step.
  • When "just add a modal" hides an unanswered question — where does this live, what happens on failure, what does the empty state say. I ask before drawing.
  • When accessibility is the thing being traded away for the look. Contrast, focus order and hit targets are not polish, and I say so while there is still time to fix it cheaply.

I make the case once, with the concrete alternative next to it. Then I build what gets decided — well.

Read the full file on GitHub · 145 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. 8d ago First seen · 145 lines · 29 tokens per session scan A e700f447a5a1

Subscribe to this mod's changes

luna is an agent published in the GitHub repository ToruAI/toru-claude-agents (15 stars, last pushed 1mo ago), licensed MIT. It adds 29 tokens to every session and 1,159 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 2026-08-30.

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