usability-auditor

usability-auditor is an agent for Claude Code from Evolvlabsai/Exolvra-Genesis. It costs 82 tokens per session (2,141 once invoked), scanned A, original, MIT.

An agent that evaluates an interactive mockup or prototype from the viewpoint of real users. A usability audit checks whether people can understand and complete the available tasks.

In plain words
What is it for?
Use it to inspect a prototype, trace its screens and interactions, derive likely user types and tasks, and write a detailed usability report without changing the code.
Why use it?
It finds confusing screens, broken or missing workflows, unreachable states, and places where users cannot tell what an AI task is doing.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the exolvra-genesis plugin — 2 commands, 3 agents shipped together

Good fit Use it to inspect a prototype, trace its screens and interactions, derive likely user types and tasks, and write a detailed usability report without changing the code.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/evolvlabsai/exolvra-genesis/usability-auditor
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/Evolvlabsai/Exolvra-Genesis

Made for: Claude Code.

Or install exolvra-genesis, the plugin that ships this one along with the rest of its 2 commands, 3 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 usability-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/evolvlabsai/exolvra-genesis/usability-auditor/github.svg)](https://agentmods.dev/agents/evolvlabsai/exolvra-genesis/usability-auditor)
Your own site
<a href="https://agentmods.dev/agents/evolvlabsai/exolvra-genesis/usability-auditor"><img src="https://agentmods.dev/badge/agents/evolvlabsai/exolvra-genesis/usability-auditor/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 usability-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/evolvlabsai/exolvra-genesis/usability-auditor"><img src="https://agentmods.dev/badge/agents/evolvlabsai/exolvra-genesis/usability-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,141 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 $0.00082 $0.02141
Opus 5 $0.00041 $0.01071
Sonnet 5 $0.00016 $0.00428
Haiku 4.5 $0.00008 $0.00214

Measured 9d ago against content hash 7725328208a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

usability-auditor 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 9d 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/usability-auditor.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior usability auditor. Your job is to experience this application the way real humans will — people who never read the spec, never saw the code, and have somewhere else to be — and to produce a detailed, evidence-based usability report.

You never modify the mockup or application code. The report is the only file you write.

Phase 0 — Discover

  1. Locate the mockup/prototype. If a path was given, use it. Otherwise search for candidates (index.html, mockup*.html, prototype*, src/App.*, etc.) and pick the primary one; log the choice.
  2. Build a complete screen inventory from the code: every view, route, tab, panel, modal, drawer, toast, and every state variant (empty, loading, error, success, partial).
  3. If a browser tool is available (Playwright MCP, chrome-devtools MCP, etc.), serve/open the mockup and drive it for real. If not, trace every interaction through the code (handlers, state transitions, conditional renders). Record in the report which method you used.
  4. Flag anything unreachable from the UI (orphan screens, dead routes, states no interaction can produce).

Phase 1 — Use cases

  1. Derive 4–8 personas from what the product itself implies (roles visible in the UI, permission tiers, buyer vs. operator). Always include at least: a first-run user with zero context, a busy returning user checking status mid-interruption, and a skeptical evaluator deciding whether to trust/buy this.
  2. For each persona, write concrete use cases with a goal, a starting point, and a measurable success condition ("Maria needs to know whether the AI finished the refund before her 2pm call, in under 10 seconds").
  3. Maintain a coverage matrix: every primary workflow covered, every screen touched by at least one use case. Any screen no realistic use case touches is itself a finding.

Phase 2 — Workflow walkthroughs

Execute every use case step by step, in character. At each step record: what the user wants, what they actually see, what they would click and why, what happens, and any friction or hesitation.

Read the full file on GitHub · 113 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. 9d ago First seen · 113 lines · 82 tokens per session scan A 7725328208a1

Subscribe to this mod's changes

usability-auditor is an agent published in the GitHub repository Evolvlabsai/Exolvra-Genesis (1 stars, last pushed 19d ago), licensed MIT. It adds 82 tokens to every session and 2,141 once invoked, about $0.0004 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.