A command-line tool for controlling an already-running Chromium-based browser through the Chrome DevTools Protocol, a standard browser-control interface. It works with Brave, Chrome, Edge, and Arc, including logged-in sessions.

Use it to inspect pages, automate browser tasks, or access websites where the running browser is already authenticated.

It lets an agent work inside an existing signed-in browser session without needing the account credentials.

cdp-cli — Plugin for Claude Code by bdmorin/the-no-shop

Install

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.

Clone the repo

git clone --depth 1 https://github.com/bdmorin/the-no-shop

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/bdmorin/the-no-shop/cdp-cli/github.svg)](https://agentmods.dev/plugins/bdmorin/the-no-shop/cdp-cli)

Your own site

<a href="https://agentmods.dev/plugins/bdmorin/the-no-shop/cdp-cli"><img src="https://agentmods.dev/badge/plugins/bdmorin/the-no-shop/cdp-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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/bdmorin/the-no-shop/cdp-cli"><img src="https://agentmods.dev/badge/plugins/bdmorin/the-no-shop/cdp-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 53 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

cdp-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.

plugins/cdp-cli/.claude-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "cdp-cli",
  "description": "Ride a running Chromium browser via CDP. Access authenticated sessions without credentials. Works with Brave, Chrome, Edge, Arc.",
  "version": "1.0.0",
  "author": {
    "name": "Brian Morin"
  },
  "homepage": "https://github.com/bdmorin/the-no-shop",
  "repository": "https://github.com/bdmorin/the-no-shop",
  "license": "MIT",
  "keywords": [
    "cdp",
    "chrome-devtools-protocol",
    "browser",
    "session",
    "chromium",
    "brave",
    "puppeteer",
    "automation"
  ]
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 53 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill cdp-cli A 53 tokens

Changes

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 · 22 lines scan A 2e33cd61ca30

Subscribe to this mod's changes

cdp-cli is a plugin published in the GitHub repository bdmorin/the-no-shop (10 stars, last pushed 7mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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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