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 skills add beel-collab/presets.dev --skill ai-native-cligit clone --depth 1 https://github.com/beel-collab/presets.devWrote 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/skills/beel-collab/presets.dev/ai-native-cli)<a href="https://agentmods.dev/skills/beel-collab/presets.dev/ai-native-cli"><img src="https://agentmods.dev/badge/skills/beel-collab/presets.dev/ai-native-cli/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/skills/beel-collab/presets.dev/ai-native-cli"><img src="https://agentmods.dev/badge/skills/beel-collab/presets.dev/ai-native-cli.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 | $0.00040 | $0.03552 |
| Opus 5.5 | $0.00016 | $0.01421 |
| Sonnet 5.5 | $0.00008 | $0.00710 |
| Haiku 4.5 | $0.00004 | $0.00355 |
Grade A, and why
ai-native-cli 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.
This is a copy
95% identical to ai-native-cli — 28 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 317 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent-Friendly CLI Spec v0.1
When building or modifying CLI tools, follow these rules to make them safe and reliable for AI agents to use.
Overview
A comprehensive design specification for building AI-native CLI tools. It defines 98 rules across three certification levels (Agent-Friendly, Agent-Ready, Agent-Native) with prioritized requirements (P0/P1/P2). The spec covers structured JSON output, error handling, input contracts, safety guardrails, exit codes, self-description, and a feedback loop via a built-in issue system.
When to Use This Skill
- Use when building a new CLI tool that AI agents will invoke
- Use when retrofitting an existing CLI to be agent-friendly
- Use when designing command-line interfaces for automation pipelines
- Use when auditing a CLI tool's compliance with agent-safety standards
Core Philosophy
- Agent-first -- default output is JSON; human-friendly is opt-in via
--human - Agent is untrusted -- validate all input at the same level as a public API
- Fail-Closed -- when validation logic itself errors, deny by default
- Verifiable -- every rule is written so it can be automatically checked
Layer Model
This spec uses two orthogonal axes:
- Layer answers rollout scope:
core,recommended,ecosystem - Priority answers severity:
P0,P1,P2
Use layers for migration and certification:
- core -- execution contract: JSON, errors, exit codes, stdout/stderr, safety
- recommended -- better machine UX: self-description, explicit modes, richer schemas
- ecosystem -- agent-native integration:
agent/,skills,issue, inline context
Certification maps to layers:
- Agent-Friendly -- all
corerules pass - Agent-Ready -- all
core+recommendedrules pass - Agent-Native -- all layers pass
How It Works
Step 1: Output Mode
Default is agent mode (JSON). Explicit flags to switch:
$ mycli list # default = JSON output (agent mode)
$ mycli list --human # human-friendly: colored, tables, formatted
$ mycli list --agent # explicit agent mode (override config if needed)
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 First seen · 317 lines · 40 tokens per session scan A 28f07d95b7c4
ai-native-cli is a skill published in the GitHub repository beel-collab/presets.dev (3 stars, last pushed 5mo ago), licensed MIT. It adds 40 tokens to every session and 3,552 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 95% identical to ai-native-cli, differing in 28 lines, and is treated as a copy.
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