platform: Skill for Claude Code

.agents/skills/agent-browser/SKILL.md

agent-browser is a skill for Claude Code from tutur3u/platform. It costs 16 tokens per session (111 once invoked), scanned A, a copy of agent-browser, Apache-2.0.

A command-line browser controller for navigating websites, filling fields, clicking controls, taking screenshots, extracting text, and testing web apps.

In plain words
What is it for?
Use it for browser automation such as opening pages, locating interactive elements, submitting forms, checking navigation results, and capturing page evidence.
Why use it?
It gives an AI agent a repeatable way to inspect and interact with pages through Chrome or Chromium.

Skill for Claude Code

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

This is tutur3u/platform's own configuration. It tells Claude Code how to work on platform 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 platform configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tutur3u/platform. 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/tutur3u/platform/main/.agents/skills/agent-browser/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/tutur3u/platform

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.

agentmods badge for agent-browser

README.md
[![agentmods](https://agentmods.dev/badge/skills/tutur3u/platform/agent-browser/github.svg)](https://agentmods.dev/skills/tutur3u/platform/agent-browser)
Your own site
<a href="https://agentmods.dev/skills/tutur3u/platform/agent-browser"><img src="https://agentmods.dev/badge/skills/tutur3u/platform/agent-browser/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 agent-browser

Your own site · 80×15
<a href="https://agentmods.dev/skills/tutur3u/platform/agent-browser"><img src="https://agentmods.dev/badge/skills/tutur3u/platform/agent-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 111 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 78% copy Near-identical to another mod 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 $0.00016 $0.00111
Opus 5.5 $0.00006 $0.00044
Sonnet 5.5 $0.00003 $0.00022
Haiku 4.5 $0.00002 $0.00011

Measured 1mo ago against content hash 8e84227c4193, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-browser 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.

The scan reads SKILL.md. This mod also ships 3 executable files (templates/authenticated-session.sh, templates/capture-workflow.sh, templates/form-automation.sh), 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.

Origin

This is a copy

78% identical to agent-browser — 625 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.

.agents/skills/agent-browser/SKILL.md · 15 lines

What it actually says

Browser Automation

Use the agent-browser CLI when it is the appropriate available browser surface. Inspect page state before acting; preserve user authorization for external mutations.

Read references/workflow-guide.md for the relevant commands and examples. Search its headings for the current operation; do not load the entire catalog for a small task.

Run bundled scripts and templates from the skill directory so their relative paths resolve.

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. 1mo ago Changed · -755 lines · -92 tokens per session 8e84227c4193
  2. 1mo ago First seen · 770 lines · 108 tokens per session scan A b75cca0aef39

Subscribe to this mod's changes

agent-browser is a skill published in the GitHub repository tutur3u/platform (55 stars, last pushed today), licensed Apache-2.0. It adds 16 tokens to every session and 111 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 78% identical to agent-browser, differing in 625 lines, and is treated as a copy.

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