What is browser-automation?

A browser automation toolkit for testing and interacting with websites. It can fill forms, check interface behaviour, capture screenshots, monitor network requests and inspect browser errors.

Use it to automate web-app tests, verify user-interface behaviour, submit forms, capture screenshots, inspect JavaScript errors, monitor requests or extract page data.

It reduces repetitive manual browser testing and makes it easier to investigate failures in web pages and their requests.

browser-automation — Skill for Claude Code by Ch-msm/cc-plugins

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.

Any agent

npx skills add Ch-msm/cc-plugins --skill browser-automation

Clone the repo

git clone --depth 1 https://github.com/Ch-msm/cc-plugins

Made for: Claude Code.

Or install tools, the plugin that ships this one along with the rest of its 1 skill, 1 command.

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/skills/ch-msm/cc-plugins/browser-automation/github.svg)](https://agentmods.dev/skills/ch-msm/cc-plugins/browser-automation)

Your own site

<a href="https://agentmods.dev/skills/ch-msm/cc-plugins/browser-automation"><img src="https://agentmods.dev/badge/skills/ch-msm/cc-plugins/browser-automation/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/skills/ch-msm/cc-plugins/browser-automation"><img src="https://agentmods.dev/badge/skills/ch-msm/cc-plugins/browser-automation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 114 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,307 The whole file, excluding the scripts and references it only reads on demand.

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

Origin unknown No closer match found in the catalogue.

Token cost

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	$0.00114	$0.01307
Opus 5.5	$0.00046	$0.00523
Sonnet 5.5	$0.00023	$0.00261
Haiku 4.5	$0.00011	$0.00131

Measured 2mo ago against content hash 6106f201ab30, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

browser-automation 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 2mo ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/data_extractor.py, scripts/form_filler.py, scripts/screenshot_helper.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/tools/skills/browser-automation/SKILL.md · 135 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

13 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.

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.

2mo ago First seen · 135 lines · 114 tokens per session scan A 6106f201ab30

Subscribe to this mod's changes

browser-automation is a skill published in the GitHub repository Ch-msm/cc-plugins (2 stars, last pushed 8mo ago), with no licence file. It adds 114 tokens to every session and 1,307 once invoked, about $0.0005 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 2026-08-31.

Browser automation E2E testing Testing

browser-automation next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
browser-automationCh-msm/cc-plugins	Skill	2	8mo ago	none	A	114	Claude Code
browsegarrytan/gstack	Skill	141k	today	MIT	B	32	Claude Code
cua-driverdavidondrej/skills	Skill	4.3k	yesterday	MIT	A	68	Claude Code, Codex
create-verification-skillget-bb/bb	Skill	5.0k	today	MIT	A	57	Claude Code, Codex
browser-qahashgraph-online/awesome-codex-plugins	Skill	1.5k	today	Apache-2.0	A	58	Claude Code, Codex
webapp-testinganthropics/skills	Skill	188k	today	none	A	35	Claude Code
test-electron-appPostHog/posthog-foss	Skill	728	today	MIT	A	112	Claude Code