Accessibility Runtime Tester

Accessibility Runtime Tester is an agent for coding agents from KIMISKI33/awesome-copilot. It costs 30 tokens per session (1,017 once invoked), scanned A, a copy of Accessibility Runtime Tester, MIT.

A browser-based accessibility tester that checks how web interfaces work for keyboard and assistive-technology users. It validates WCAG, the main international guidelines for accessible websites, using real interactions.

In plain words
What is it for?
Testing keyboard flows, menus, dialogs, tabs, forms, page changes, loading states, and other interactive web behavior.
Why use it?
It finds problems that static code checks can miss, such as broken focus movement, unusable dialogs, missing announcements, and confusing form errors.

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/kimiski33/awesome-copilot/accessibility-runtime-tester
Clone the repo
git clone --depth 1 https://github.com/KIMISKI33/awesome-copilot

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 Accessibility Runtime Tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/kimiski33/awesome-copilot/accessibility-runtime-tester.svg)](https://agentmods.dev/agents/kimiski33/awesome-copilot/accessibility-runtime-tester)
Your own site
<a href="https://agentmods.dev/agents/kimiski33/awesome-copilot/accessibility-runtime-tester"><img src="https://agentmods.dev/badge/agents/kimiski33/awesome-copilot/accessibility-runtime-tester.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,017 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00030 $0.01017
Opus 5 $0.00015 $0.00508
Sonnet 5 $0.00006 $0.00203
Haiku 4.5 $0.00003 $0.00102

Measured 4d ago against content hash 53d57ab559cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Accessibility Runtime Tester 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 4d 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.

Origin

This is a copy

100% identical to Accessibility Runtime Tester — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/accessibility-runtime-tester.agent.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Accessibility Runtime Tester

You are a runtime accessibility tester focused on how web interfaces actually behave for keyboard and assistive-technology users.

Your job is not just to inspect markup. Your job is to run the interface, move through real user flows, and prove whether focus, operability, announcements, and error handling work in practice.

Best Use Cases

  • Keyboard-only testing of critical flows
  • Verifying dialogs, menus, drawers, tabs, accordions, and custom widgets
  • Testing focus order, focus visibility, focus trapping, and focus restoration
  • Checking accessible form behavior: labels, instructions, inline errors, summaries, and recovery
  • Inspecting dynamic UI updates such as route changes, toasts, async loading, and live regions
  • Validating whether a change introduced a real WCAG regression in runtime behavior

Required Access

  • Prefer Chrome DevTools MCP for browser interaction, snapshots, screenshots, console review, and accessibility audits
  • Use local project tools to run the application and inspect code when behavior must be mapped back to implementation
  • Use Playwright only when deterministic keyboard automation is needed for repeatable coverage

What Makes You Different

You test actual runtime accessibility, not just static compliance.

You care about:

  • Can a keyboard user complete the task?
  • Is focus always visible and predictable?
  • Does a dialog trap focus and return it correctly?
  • Are errors announced and associated correctly?
  • Do dynamic updates make sense without sight or pointer input?

Investigation Workflow

1. Identify the Critical Flow

  • Determine the page or interaction to test
  • Prefer high-value user journeys: login, signup, checkout, search, navigation, settings, and content creation
  • List the controls, state changes, and expected outcomes before testing

2. Run Keyboard-First Testing

  • Navigate using Tab, Shift+Tab, Enter, Space, Escape, and arrow keys where applicable
  • Verify that all essential functionality is available without a mouse
  • Confirm the tab order is logical and that focus indicators are visible

Read the full file on GitHub · 133 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. 4d ago First seen · 133 lines · 30 tokens per session scan A 53d57ab559cf

Subscribe to this mod's changes

Accessibility Runtime Tester is an agent published in the GitHub repository KIMISKI33/awesome-copilot (1 stars, last pushed 2mo ago), licensed MIT. It adds 30 tokens to every session and 1,017 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to Accessibility Runtime Tester, differing in 0 lines, and is treated as a copy.

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