docker-stealthy-auto-browse: Skill for Claude Code

.agents/skills/stealthy-auto-browse/SKILL.md

stealthy-auto-browse is a skill for Claude Code from psyb0t/docker-stealthy-auto-browse. It costs 52 tokens per session (6,977 once invoked), scanned B, original, WTFPL.

A browser-automation setup for authorised testing that uses a headless-resistant browser in Docker. Headless means the browser runs without a visible window.

In plain words
What is it for?
Use it for authorised quality assurance, compatibility testing, and defensive security research with persistent browser profiles.
Why use it?
It helps test websites that detect or behave differently toward automated browsers, while limiting use to sites you own or are authorised to test.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is psyb0t/docker-stealthy-auto-browse's own configuration. It tells Claude Code how to work on docker-stealthy-auto-browse itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything docker-stealthy-auto-browse configures →

Part of the stealthy-auto-browse plugin — 1 skill shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to psyb0t/docker-stealthy-auto-browse. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/psyb0t/docker-stealthy-auto-browse/main/.agents/skills/stealthy-auto-browse/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/psyb0t/docker-stealthy-auto-browse

Made for: Claude Code.

Or install stealthy-auto-browse, the plugin that ships this one along with the rest of its 1 skill.

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.

agentmods badge for stealthy-auto-browse

README.md
[![agentmods](https://agentmods.dev/badge/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse/github.svg)](https://agentmods.dev/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse)
Your own site
<a href="https://agentmods.dev/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse"><img src="https://agentmods.dev/badge/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse/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.

agentmods 80×15 button for stealthy-auto-browse

Your own site · 80×15
<a href="https://agentmods.dev/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse"><img src="https://agentmods.dev/badge/skills/psyb0t/docker-stealthy-auto-browse/stealthy-auto-browse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,977 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00052 $0.06977
Opus 5 $0.00026 $0.03488
Sonnet 5 $0.00010 $0.01395
Haiku 4.5 $0.00005 $0.00698

Measured 12d ago against content hash 214cd194d839, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

stealthy-auto-browse scanned grade B with 2 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 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/websearch.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.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- **Treat the profile volume as a secret.** It contains live session cookies — back it up encrypted or not at all, and shred it (`rm -rf ./profile`) when the test run is done.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

{ "openclaw": { "emoji": "🕵️", "primaryEnv": "STEALTHY_AUTO_BROWSE_URL", "requires": { "bins": ["docker", "curl"] } } }
.agents/skills/stealthy-auto-browse/SKILL.md · 564 lines

The source is not reproduced here

Licensed WTFPL

The repository is licensed WTFPL, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

3 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.

  1. 12d ago First seen · 564 lines · 52 tokens per session scan B 214cd194d839

Subscribe to this mod's changes

stealthy-auto-browse is a skill published in the GitHub repository psyb0t/docker-stealthy-auto-browse (77 stars, last pushed 10d ago), licensed WTFPL. It adds 52 tokens to every session and 6,977 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories