What is skills AGENTS.md?

A set of AGENTS.md instructions for a project that collects AI-agent skills for research and design. AGENTS.md is a file that tells coding agents how to work in a project.

Use it when working on the dylanfeltus/skills project and needing its repository instructions.

It gives an agent the project-specific guidance needed to make changes consistently.

How dylanfeltus/skills configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to dylanfeltus/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.

Copy the file

curl -O https://raw.githubusercontent.com/dylanfeltus/skills/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/dylanfeltus/skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/dylanfeltus/skills/agents-md/github.svg)](https://agentmods.dev/instructions/dylanfeltus/skills/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/dylanfeltus/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/dylanfeltus/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/dylanfeltus/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/dylanfeltus/skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 141 This file is loaded in full into every session.

When invoked 141 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.

Model	Per session	Once invoked
Fable 5.1	$0.00141	$0.00141
Opus 5.5	$0.00056	$0.00056
Sonnet 5.5	$0.00028	$0.00028
Haiku 4.5	$0.00014	$0.00014

Measured 2mo ago against content hash 56a01f95a0da, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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 · 14 lines

What it actually says

Review guidelines

No hardcoded API keys, secrets, or tokens
No console.log in production code (use proper logging or remove)
No any types in TypeScript — use proper types
All API routes must have error handling (try/catch, proper status codes)
Database queries must handle errors gracefully
No TODO comments without context or linked issues
Verify env vars are documented if new ones are added
Check for SQL injection / unsanitized user input
No secrets or PII in comments or variable names
Imports should be used — flag dead imports
Functions over 50 lines should be flagged for refactoring consideration

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.

2mo ago First seen · 14 lines · 141 tokens per session scan A 56a01f95a0da

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository dylanfeltus/skills (180 stars, last pushed 1mo ago), licensed MIT. It adds 141 tokens to every session, about $0.0006 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.

skills AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
skills AGENTS.mddylanfeltus/skills	Instructions file	180	1mo ago	MIT	A	141	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

skills: Instructions file for Codex