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 IgorWarzocha/howaboua-pi-stuff --skill chrome-cdpgit clone --depth 1 https://github.com/IgorWarzocha/howaboua-pi-stuffWrote 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/igorwarzocha/howaboua-pi-stuff/chrome-cdp)<a href="https://agentmods.dev/skills/igorwarzocha/howaboua-pi-stuff/chrome-cdp"><img src="https://agentmods.dev/badge/skills/igorwarzocha/howaboua-pi-stuff/chrome-cdp/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/igorwarzocha/howaboua-pi-stuff/chrome-cdp"><img src="https://agentmods.dev/badge/skills/igorwarzocha/howaboua-pi-stuff/chrome-cdp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00041 | $0.01414 |
| Opus 5 | $0.00020 | $0.00707 |
| Sonnet 5 | $0.00008 | $0.00283 |
| Haiku 4.5 | $0.00004 | $0.00141 |
Grade A, and why
chrome-cdp 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 9d 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 — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Chrome CDP
Authorization
Treat the user's request and applicable repository or environment instructions as authorization for browser operations reasonably needed to complete the task. Do not ask again merely because CDP is involved.
Proceed without separate confirmation for:
- opening or navigating established public sites relevant to the task
- reading, searching, filtering, or opening content, including routine search forms and logged-in pages when authentication is needed to find what the user requested
- reversible interface actions that do not publish, communicate, purchase, delete, or change account state
Ask before navigating the user's browser to an unfamiliar or low-trust site they did not identify. Also ask before consequential external actions such as sending or posting content, reacting publicly, submitting applications or other consequential forms, purchasing, uploading, deleting, or changing account settings—unless the user explicitly authorized it or it follows directly from an action you already agreed to take. Once authorized, act without a redundant confirmation.
Command path
The CLI lives next to this skill at scripts/cdp.mjs. Resolve it relative to this SKILL.md file, or use the installed package path if your host exposes one.
Prerequisites
- Chrome (or Chromium, Brave, Edge, Vivaldi) with remote debugging enabled: open
chrome://inspect/#remote-debuggingand toggle the switch - Node.js 22+ (uses built-in WebSocket)
- The CLI first tries HTTP discovery on
CDP_PORTor9222for deterministic access to the logged-in browser - If that fixed-port discovery fails, it falls back to
DevToolsActivePort; setCDP_PORT_FILEif the file is in a non-standard location
Commands
All commands use scripts/cdp.mjs. The <target> is a unique targetId prefix from list; copy the full prefix shown in the list output (for example 6BE827FA). The CLI rejects ambiguous prefixes.
List open pages
scripts/cdp.mjs list
scripts/cdp.mjs tabsjson
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- scripts/cdp-lib/actions.mjs 21 KB runs code
- scripts/cdp-lib/cli.mjs 8.3 KB runs code
- scripts/cdp-lib/daemon.mjs 9.2 KB runs code
- scripts/cdp-lib/evaluate.mjs 495 B runs code
- scripts/cdp-lib/pages.mjs 1.6 KB runs code
- scripts/cdp-lib/protocol.mjs 4.0 KB runs code
- scripts/cdp-lib/README.md 280 B
- scripts/cdp-lib/runtime.mjs 6.0 KB runs code
- scripts/cdp-lib/snapshot.mjs 7.1 KB runs code
- scripts/cdp.mjs 620 B runs code
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.
- 9d ago First seen · 107 lines · 41 tokens per session scan A 96de0426a4b7
chrome-cdp is a skill published in the GitHub repository IgorWarzocha/howaboua-pi-stuff (358 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 1,414 once invoked, about $0.0002 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.
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