chrisbanes/skills is a collection of coding-agent skills for Kotlin, Jetpack Compose, Android development, and grounded writing, packaged as a portable agent-plugin repository. It is for developers building Android or Kotlin applications and for coding agents supporting those workflows. The catalogue entries are the repository's skills, instructions, and plugin packaging.
Borrowing it
Nothing to install: this file belongs to chrisbanes/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/chrisbanes/skills/main/AGENTS.mdgit clone --depth 1 https://github.com/chrisbanes/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/chrisbanes/skills/agents-md)<a href="https://agentmods.dev/instructions/chrisbanes/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/chrisbanes/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/chrisbanes/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/chrisbanes/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 | $0.01105 | $0.01105 |
| Opus 5.5 | $0.00442 | $0.00442 |
| Sonnet 5.5 | $0.00221 | $0.00221 |
| Haiku 4.5 | $0.00111 | $0.00111 |
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 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 — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Instructions for AI agents (Claude Code, etc.) working in this repo.
When adding, renaming, or removing a skill
- Update
README.md— keep the "Skills" list in sync. Each entry links to the skill'sSKILL.mdand summarises what it covers. If you add a skill and don't update the README, the change is incomplete. - Add evaluation coverage — add the new skill to the relevant evaluation suite, with direct, novel, and no-change cases that exercise its expected behavior and restraint. Keep those cases in
evals/, with deterministic validation where applicable; runtimeSKILL.mdfiles do not carry RED/GREEN scenario sections. A new skill is incomplete without evaluation coverage. - Do not update plugin or skill versions unless explicitly asked. If the user asks for a release/version bump, use the release system below.
Skill authoring checklist
Before considering any skill addition or edit complete, verify:
- The frontmatter description starts with
Use whenand contains concrete trigger conditions only. - The body states one core principle and gives ordered, imperative steps.
- Tables support rather than replace the procedure; failed checks specify the next action, and the procedure has an explicit finish gate.
- Examples are minimal and behavior-preserving; exceptions and non-applicable cases are explicit.
- The evaluation corpus includes direct, novel, and no-change coverage, including a counterexample against over-application.
- README and router integration are updated where applicable,
npm run lintpasses, and versions remain unchanged unless requested.
Evaluation result documentation
- Keep the result tables in
README.mdandevals/README.mdsynchronized. Each cell shows the latest available result for that skill and metric. - Replace superseded values in place. Do not turn either README into a journal of dated runs, targeted rechecks, repair history, or per-run commentary.
- Keep detailed scorecards, audit decisions, run provenance, and historical evidence in evaluation artifacts and the change record, not in the READMEs.
- Update only metrics supported by the latest evidence; leave unrelated skill results unchanged.
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 · +8 lines · +79 tokens per session 6775acdd7d91
- 1mo ago Changed · +3 lines · +68 tokens per session ae3b4d53f5fc
- 2mo ago Changed · +1 lines · +42 tokens per session a77522c04b3e
- 2mo ago First seen · 64 lines · 916 tokens per session scan A 084b28173664
skills AGENTS.md is an instructions file published in the GitHub repository chrisbanes/skills (1,139 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,105 tokens to every session, about $0.0044 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 compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| skills AGENTS.mdchrisbanes/skills | Instructions file | 1.1k | yesterday | Apache-2.0 | A | 1,105 | 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 |