a11y-agents-kit: Instructions file for Codex

AGENTS.md

a11y-agents-kit AGENTS.md is an instructions file for Codex, OpenCode from weAAAre/a11y-agents-kit. It costs 1,531 tokens per session, scanned A, original, MIT.

Repository guidelines for an accessibility-focused monorepo containing agent skills and MCP servers. A monorepo keeps several related packages in one repository, and accessibility work checks whether software can be used by people with disabilities.

In plain words
What is it for?
Use it when developing accessibility audits for color contrast, color blindness, macOS VoiceOver, virtual screen readers, shared TypeScript configuration, tests, or package releases.
Why use it?
The guidelines explain the package structure, supported tools, coding standards, and checks needed to keep the related projects consistent.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is weAAAre/a11y-agents-kit's own configuration. It tells Codex and OpenCode how to work on a11y-agents-kit 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 a11y-agents-kit configures →

Reuse

Borrowing it

Nothing to install: this file belongs to weAAAre/a11y-agents-kit. 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/weAAAre/a11y-agents-kit/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/weAAAre/a11y-agents-kit

Made for: Codex, OpenCode.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/weaaare/a11y-agents-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/weaaare/a11y-agents-kit/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,531 This file is loaded in full into every session.
When invoked 1,531 The same file — it is already loaded in full.
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 $0.01531 $0.01531
Opus 5.5 $0.00612 $0.00612
Sonnet 5.5 $0.00306 $0.00306
Haiku 4.5 $0.00153 $0.00153

Measured 2mo ago against content hash 572d2057326d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

a11y-agents-kit AGENTS.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 2mo 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.md · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Purpose

This monorepo provides accessibility-focused skills and MCP servers for AI coding agents. It is maintained by weAAAre and published under the @weAAAre npm scope.

  • packages/ — MCP server packages:
    • mcp-a11y-color — WCAG color contrast, color blindness simulation, palette analysis.
    • mcp-voiceover-auditor — macOS VoiceOver-based accessibility audits.
    • mcp-virtual-screen-reader-auditor — Headless virtual screen reader audits (cross-platform).
    • mcp-auditor-core — Shared audit session, findings, reports, and tool registry (internal, not published).
  • packages/config — Shared configuration (tsconfig, rstest base config).
  • skills/ — Agent skills (markdown-based knowledge modules on accessibility topics like ARIA patterns).

Stack

Tool Version Purpose
Node.js ≥ 24 Runtime (see .nvmrc)
pnpm 9.15.4 Package manager with workspace catalog
TypeScript 5.9.3 Language (strict mode, ESM)
Turborepo 2.8.14 Monorepo task orchestration
Biome 2.4.6 Linter + formatter
Rstest 0.9.0 Test runner
Changesets 2.30.0 Versioning and npm publishing
Lefthook 2.1.3 Git hooks
Commitlint 20.4.3 Commit message validation

Commands

Always run pnpm install before building or testing after a fresh clone.

pnpm install              # install all dependencies
pnpm build                # build all packages (via Turborepo)
pnpm test                 # run all tests (via Turborepo → rstest)
pnpm check-types          # type-check all packages
pnpm lint                 # lint all packages (via Turborepo)
pnpm ci:check             # Biome CI mode (lint + format, no writes)
pnpm format               # auto-format everything with Biome
pnpm check                # Biome check with auto-fix

To scope to a single package:

pnpm --filter mcp-a11y-color test
pnpm --filter mcp-a11y-color build

CI Pipeline

The GitHub Actions workflow (.github/workflows/ci.yml) runs on every push/PR to main:

Read the full file on GitHub · 156 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. 2mo ago First seen · 156 lines · 1,531 tokens per session scan A 572d2057326d

Subscribe to this mod's changes

a11y-agents-kit AGENTS.md is an instructions file published in the GitHub repository weAAAre/a11y-agents-kit (35 stars, last pushed 6mo ago), licensed MIT. It adds 1,531 tokens to every session, about $0.0061 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.

Related

a11y-agents-kit AGENTS.md compared with instructions from other repositories

a11y-agents-kit AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
a11y-agents-kit AGENTS.mdweAAAre/a11y-agents-kitInstructions file356mo agoMITA1,531Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode