Borrowing it
Nothing to install: this file belongs to Sounio-lang/sounio. 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/Sounio-lang/sounio/main/AGENTS.mdgit clone --depth 1 https://github.com/Sounio-lang/sounioWrote 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/sounio-lang/sounio/agents-md)<a href="https://agentmods.dev/instructions/sounio-lang/sounio/agents-md"><img src="https://agentmods.dev/badge/instructions/sounio-lang/sounio/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/sounio-lang/sounio/agents-md"><img src="https://agentmods.dev/badge/instructions/sounio-lang/sounio/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 | $0.01129 | $0.01129 |
| Opus 5.5 | $0.00452 | $0.00452 |
| Sonnet 5.5 | $0.00226 | $0.00226 |
| Haiku 4.5 | $0.00113 | $0.00113 |
Grade A, and why
sounio 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 16d 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Use the ctx7 CLI to fetch current documentation whenever the user asks about a library, framework, SDK, API, CLI tool, or cloud service -- even well-known ones like React, Next.js, Prisma, Express, Tailwind, Django, or Spring Boot. This includes API syntax, configuration, version migration, library-specific debugging, setup instructions, and CLI tool usage. Use even when you think you know the answer -- your training data may not reflect recent changes. Prefer this over web search for library docs.
Do not use for: refactoring, writing scripts from scratch, debugging business logic, code review, or general programming concepts.
Steps
- Resolve library:
npx ctx7@latest library <name> "<user's question>" - Pick the best match (ID format:
/org/project) by: exact name match, description relevance, code snippet count, source reputation (High/Medium preferred), and benchmark score (higher is better). If results don't look right, try alternate names or queries (e.g., "next.js" not "nextjs", or rephrase the question) - Fetch docs:
npx ctx7@latest docs <libraryId> "<user's question>" - Answer using the fetched documentation
You MUST call library first to get a valid ID unless the user provides one directly in /org/project format. Use the user's full question as the query -- specific and detailed queries return better results than vague single words. Do not run more than 3 commands per question. Do not include sensitive information (API keys, passwords, credentials) in queries.
For version-specific docs, use /org/project/version from the library output (e.g., /vercel/next.js/v14.3.0).
If a command fails with a quota error, inform the user and suggest npx ctx7@latest login or setting CONTEXT7_API_KEY env var for higher limits. Do not silently fall back to training data.
Purpose
Guidance for AI coding agents (Codex and others) that write Sounio code or work in this repository. The language rules, build commands, tooling and known limitations are in CLAUDE.md; this file does not repeat them. Project intent: FOUNDER_INTENT.md.
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.
- 16d ago Changed · +12 lines · +172 tokens per session f2c1a2ab2fe5
- 23d ago Changed · -373 lines · -3,383 tokens per session 50930101ed66
- 1mo ago Changed · +30 tokens per session f325a86b108c
- 1mo ago Changed · +5 lines · +110 tokens per session 5ce41f62c6b4
- 1mo ago First seen · 436 lines · 4,200 tokens per session scan A e24d45c3fd55
sounio AGENTS.md is an instructions file published in the GitHub repository Sounio-lang/sounio (12 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,129 tokens to every session, about $0.0045 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
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next.js AGENTS.md
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