Borrowing it
Nothing to install: this file belongs to masuP9/a11y-specialist-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/masuP9/a11y-specialist-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/masuP9/a11y-specialist-skillsWrote 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.
[](https://agentmods.dev/instructions/masup9/a11y-specialist-skills/agents-md)<a href="https://agentmods.dev/instructions/masup9/a11y-specialist-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/masup9/a11y-specialist-skills/agents-md/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.
<a href="https://agentmods.dev/instructions/masup9/a11y-specialist-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/masup9/a11y-specialist-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00509 | $0.00509 |
| Opus 5 | $0.00254 | $0.00254 |
| Sonnet 5 | $0.00102 | $0.00102 |
| Haiku 4.5 | $0.00051 | $0.00051 |
Grade A, and why
a11y-specialist-skills 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Development Guidelines
Writing Skills and Guides
Assume the Agent's Prior Knowledge
Claude Code and Codex already know accessibility standards thoroughly. Do not include:
- WCAG 2.x success criteria definitions
- WAI-ARIA roles, states, and properties
- Basic HTML semantics
- General accessibility principles
Instead, focus on:
- How to apply the knowledge (review process, tool usage)
- What to output (report format, severity criteria)
- When to flag issues for manual verification
- Project-specific conventions
Keep It Actionable
- Write instructions, not tutorials
- Use tables and lists for quick reference
- Include concrete examples of expected output
Localization
This project maintains documentation in both English and Japanese.
File Naming Convention
| English (default) | Japanese |
|---|---|
SKILL.md |
SKILL.ja.md |
README.md |
README.ja.md |
references/*.md |
references/*.ja.md |
Sync Rules
- Always keep English and Japanese versions in sync
- Japanese (
.ja.md) files are the source of truth for content - English files are translations of the Japanese source
- When updating content, update the Japanese version first, then sync to English
- When adding a new file, create both language versions
Shared Skill Compatibility
- Keep one shared
SKILL.mdfor Claude Code and Codex; do not duplicate platform-specific skill bodies. - Preserve
argument-hintandallowed-toolsin skill frontmatter. Claude Code uses them, and the supported Codex runtime tolerates these extensions. - Validate skills with
npm run validate:skills. The upstream Codexquick_validate.pyis not the compatibility gate because it rejects the Claude Codeargument-hintextension. - Express workflow steps in terms of capabilities instead of platform-specific tool names.
- Put Codex presentation metadata in
agents/openai.yaml, not in a second skill file. - Keep the version synchronized across
.claude-plugin/plugin.json, both version fields in.claude-plugin/marketplace.json, and.codex-plugin/plugin.json.
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.
- 11d ago First seen · 67 lines · 509 tokens per session scan A 5245c9d82a15
a11y-specialist-skills AGENTS.md is an instructions file published in the GitHub repository masuP9/a11y-specialist-skills (56 stars, last pushed 3mo ago), licensed MIT. It adds 509 tokens to every session, about $0.0025 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).