Borrowing it
Nothing to install: this file belongs to joshuadavidthomas/agent-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/joshuadavidthomas/agent-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/joshuadavidthomas/agent-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/joshuadavidthomas/agent-skills/agents-md)<a href="https://agentmods.dev/instructions/joshuadavidthomas/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/joshuadavidthomas/agent-skills/agents-md.svg" alt="Measured on agentmods" 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 | $0.00284 | $0.00284 |
| Opus 5 | $0.00142 | $0.00142 |
| Sonnet 5 | $0.00057 | $0.00057 |
| Haiku 4.5 | $0.00028 | $0.00028 |
Grade A, and why
agent-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 8d 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.
What it actually says
This repository is the source of truth for @joshuadavidthomas's reusable agent skills.
Editing rule
When working in this repository, edit the skill files in this repository only.
Do not edit installed copies under ~/.agents/skills/, ~/.pi/agent/skills/, or any other runtime-installed skill directory unless the user explicitly asks to modify the installed copy.
If an installed copy differs from this repository, treat this repository as canonical. Make changes here first, then ask before syncing or copying changes to an installed location.
Skill README convention
Skill README.md files are human-facing orientation pages, not hidden runtime instruction or synthesis scratchpads.
When adding or updating a skill README, follow the style of existing skill READMEs in this repository: briefly explain what the skill is, when to use it, what files/references it contains, attribution/source notes when relevant, and scope boundaries when useful.
Do not dump skill-authoring provenance templates into a skill README by default. Avoid sections like "Synthesis Decisions", "Coverage and Gaps", "Needs validation", "Maintenance Notes", or "Change Log" unless the existing README already uses that maintainer-record style or the user explicitly asks for it.
Put detailed source summaries, rationale, examples, tradeoffs, and regression cases in focused references/ files linked from SKILL.md or the README.
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.
- 8d ago First seen · 20 lines · 284 tokens per session scan A c281a57933f5
agent-skills AGENTS.md is an instructions file published in the GitHub repository joshuadavidthomas/agent-skills (50 stars, last pushed 1mo ago), licensed MIT. It adds 284 tokens to every session, about $0.0014 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
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).
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.
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).
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.