Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/rikdc/ai-skills/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.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 | $0.00392 | $0.00392 |
| Opus 5 | $0.00196 | $0.00196 |
| Sonnet 5 | $0.00078 | $0.00078 |
| Haiku 4.5 | $0.00039 | $0.00039 |
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 5d 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
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 tests, marketplace and Codex symlink consistency
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.
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.
- 5d 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 today), licensed MPL-2.0. It adds 392 tokens to every session, about $0.0020 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 2026-08-31.
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