Borrowing it
Nothing to install: this file belongs to rikdc/ai-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/rikdc/ai-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/rikdc/ai-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/rikdc/ai-skills/agents-md)<a href="https://agentmods.dev/instructions/rikdc/ai-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/rikdc/ai-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/rikdc/ai-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/rikdc/ai-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 | $0.00491 | $0.00491 |
| Opus 5.5 | $0.00196 | $0.00196 |
| Sonnet 5.5 | $0.00098 | $0.00098 |
| Haiku 4.5 | $0.00049 | $0.00049 |
Grade A, and why
ai-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 6d 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 — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Repository purpose
This repository is a Claude Code marketplace and a shared collection of
development-agent workflows. The Claude-specific plugin manifests live under
plugins/*/.claude-plugin/; Codex-specific integration lives under .codex/.
Do not assume those packaging formats are interchangeable.
Codex skills
The reusable plugin skills are exposed to Codex through symlinks in
.codex/skills/. Their sources of truth are the plugins/*/skills/
directories.
- Use a matching skill when a task clearly fits its stated workflow.
- Edit the source skill, not its
.codex/skills/symlink. - Keep skills provider-neutral unless a platform-specific instruction is essential.
- After adding, renaming, or removing a plugin skill, run
make sync-codex-skillsto update.codex/skills/and commit the result.make testfails if the symlinks drift fromplugins/*/skills/.
Commands and verification
Run relevant checks before handing off changes:
make test # Hook, marketplace, Codex symlink, and eval/skill gate
make validate # Plugin manifest, scripts, and dependencies
make lint # ShellCheck/Markdown lint when installed
make sync-codex-skills # Regenerate .codex/skills/ after plugin skill changes
jq, grep, awk, and mktemp are required for the security-hook tooling.
Checks that need a model - reviewing a skill or scenario with judgement, and running an eval - happen on a contributor's machine, never in CI:
bin/evalctl selftest # exercise the harness end to end with no model
bin/evalctl run --plugin <plugin> --scenario <scenario> --agent-cmd 'claude -p'
bin/evalctl check --changes origin/main # what a ref touched
Boundaries
- Keep Claude plugin manifests and hooks unchanged unless the task explicitly targets Claude Code.
- The shell scripts in
plugins/security-hooks/are portable utilities, but their Claude hook registration is not a Codex configuration. - Add Codex-specific hooks, MCP settings, or a
.codex-pluginmanifest only when that integration is explicitly being implemented.
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.
- 6d ago Changed · +1 tokens per session 39d20143ce2d
- 12d ago Changed · +9 lines · +94 tokens per session 65df005758da
- 13d ago Changed · +4 tokens per session b366ec82613d
- 2mo ago First seen · 45 lines · 392 tokens per session scan A 4ba1f8e58d2f
ai-skills AGENTS.md is an instructions file published in the GitHub repository rikdc/ai-skills (2 stars, last pushed 7d ago), licensed MPL-2.0. It adds 491 tokens to every session, about $0.0020 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
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