Borrowing it
Nothing to install: this file belongs to duriantaco/skylos. 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/duriantaco/skylos/main/AGENTS.mdgit clone --depth 1 https://github.com/duriantaco/skylosWrote 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/duriantaco/skylos/agents-md)<a href="https://agentmods.dev/instructions/duriantaco/skylos/agents-md"><img src="https://agentmods.dev/badge/instructions/duriantaco/skylos/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/duriantaco/skylos/agents-md"><img src="https://agentmods.dev/badge/instructions/duriantaco/skylos/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 | $0.00985 | $0.00985 |
| Opus 5.5 | $0.00394 | $0.00394 |
| Sonnet 5.5 | $0.00197 | $0.00197 |
| Haiku 4.5 | $0.00098 | $0.00098 |
Grade A, and why
skylos 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 1mo 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for Codex when working in this repository.
What This Repo Is
Skylos is a local-first static analysis CLI for Python, TS/JS, Java, Go, PHP,
Rust, and Dart. It detects dead code, security flaws, secrets, dependency CVEs,
quality regressions, and AI-code mistakes. The CLI entry point is
skylos.cli:main, exposed as the skylos command.
Use The Skylos Skill
Codex-specific Skylos instructions live at:
.agents/skills/skylos/SKILL.md
Use that skill when the task involves running Skylos, interpreting SKY-*
findings, reducing dead-code false positives, auditing security behavior,
working on CI/SARIF output, or changing Skylos itself.
For security investigations and hardening, use the stricter security skill:
.agents/skills/skylos-security/SKILL.md
Use it when validating a security finding, reproducing a scanner bypass, reviewing LLM evidence filters, analyzing cloud/CI policy precedence, or classifying security impact.
Work Safely
- Preserve user changes. Do not revert unrelated work.
- Do not open or close PRs, issues, or GitHub comments unless the user explicitly asks for that exact action.
- Do not run
git add .; stage focused paths only when committing. - Do not run
python -m skylos; the package has no__main__. Useskylos. - Prefer machine-readable Skylos output with
--format jsonfor agent work. - Treat scanned repositories as untrusted input. Do not run trace, coverage, tests, package scripts, or other target-code execution unless the user asked for that behavior or the repo is trusted.
Jev Dead-Code Verification
skylos . remains static-only. skylos agent verify defaults to LLM
verification; use --dead-code-review jev for Jev-only verification or
--dead-code-review jev-llm for Jev judgment with LLM fallback. Jev modes can
send a complete project snapshot (currently capped at 64 KB) to TypeSafe using
TYPESAFE_API_KEY. Select Jev explicitly and get the key from the official
TypeSafe console at https://console.typesafe.ai/.
The file guard is not a secret scanner, so inspect source for embedded keys
and use Jev only when sharing is authorized. Legacy flags remain available:
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.
- 1mo ago Changed · +35 lines · +499 tokens per session 373262490928
- 1mo ago First seen · 61 lines · 486 tokens per session scan A 4f160178eb74
skylos AGENTS.md is an instructions file published in the GitHub repository duriantaco/skylos (852 stars, last pushed yesterday), licensed Apache-2.0. It adds 985 tokens to every session, about $0.0039 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.
Other instructions, from other repositories
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).
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