agent-browser

agent-browser is a skill for Claude Code, Codex from avibebuilder/claude-prime. It costs 108 tokens per session (1,498 once invoked), scanned A, original, MIT.

A browser automation tool for controlling websites through commands. It can inspect pages and interact with visible elements such as forms and buttons.

In plain words
What is it for?
Use it to open websites, fill in forms, click buttons, take screenshots, extract information, and test web applications.
Why use it?
It removes the need to perform repetitive website actions manually and helps verify what happened after each step.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/avibebuilder/claude-prime/agent-browser
Any agent
npx skills add avibebuilder/claude-prime --skill agent-browser
Clone the repo
git clone --depth 1 https://github.com/avibebuilder/claude-prime

Made for: Claude Code, Codex.

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/avibebuilder/claude-prime/agent-browser.svg)](https://agentmods.dev/skills/avibebuilder/claude-prime/agent-browser)
Your own site
<a href="https://agentmods.dev/skills/avibebuilder/claude-prime/agent-browser"><img src="https://agentmods.dev/badge/skills/avibebuilder/claude-prime/agent-browser.svg" alt="Measured on agentmods" height="20"></a>
Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,498 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00108 $0.01498
Opus 5 $0.00054 $0.00749
Sonnet 5 $0.00022 $0.00300
Haiku 4.5 $0.00011 $0.00150

Measured 3d ago against content hash 2960e0e9fa2a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 3d 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.

.claude/skills/agent-browser/SKILL.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Automation with agent-browser

Use this skill to drive websites through the agent-browser CLI. Keep the main loop tight: inspect the page, act with refs, verify the result, and only pull deeper docs when the task actually needs them.

Core workflow

Prefer agent-browser directly for speed. Use npx agent-browser only if it is not installed globally.

For most tasks, follow this loop:

  1. Open the page
  2. Wait for the relevant state
  3. Snapshot with refs
  4. Interact using those refs
  5. Re-snapshot after page or DOM changes
  6. Verify the outcome
  7. Close the session when done
agent-browser open https://example.com/form
agent-browser wait --load networkidle
agent-browser snapshot -i
# Output: @e1 [input type="email"], @e2 [input type="password"], @e3 [button] "Submit"

agent-browser fill @e1 "[email protected]"
agent-browser fill @e2 "password123"
agent-browser click @e3
agent-browser wait --load networkidle
agent-browser snapshot -i

Chain commands with && only when you do not need to inspect intermediate output. Good: open && wait && screenshot. Bad: snapshot && click when you still need to read the refs from the snapshot.

Route fast

Read only the reference that matches the task:

Need Read
Full command or flag lookup references/commands.md
Ref lifecycle, stale refs, snapshot strategy references/snapshot-refs.md
Login flows, OAuth, 2FA, saved auth state references/authentication.md
Parallel sessions, state reuse, cleanup references/session-management.md
Recording, profiling, local files, config, iOS, security references/advanced-usage.md
Proxy setup references/proxy-support.md
Recording workflows references/video-recording.md
Profiling workflows references/profiling.md

Read the full file on GitHub · 138 lines

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. 3d ago First seen · 138 lines · 108 tokens per session scan A 2960e0e9fa2a

Subscribe to this mod's changes

agent-browser is a skill published in the GitHub repository avibebuilder/claude-prime (119 stars, last pushed 3mo ago), licensed MIT. It adds 108 tokens to every session and 1,498 once invoked, about $0.0005 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.

Related

Other skills, from other repositories

webcrawler-deep-crawl

Deep-crawl any website from start URLs, return per-page LLM-ready text/markdown/HTML plus metadata (title, description, author, language, canonical URL, OG) and in-scope outbound links. Use when user mentions deep crawl website, recursive crawl, crawl a whole site, scrape entire website, scrape docs site, scrape…

browser-act/skills · 215 tokens

indeed-job-search

Scrape job listings from Indeed.com by keyword, location, and country. Returns job title, company, salary, rating, description, benefits, and apply links. Use when user mentions Indeed, Indeed scraper, Indeed jobs, scrape Indeed, job search Indeed, Indeed job listings, extract Indeed data, Indeed job data, get jobs…

browser-act/skills · 141 tokens

producthunt-launches

Scrape Product Hunt daily/weekly/monthly/yearly leaderboard launches with full product details, maker profiles, and website contact info. Use when user mentions Product Hunt, producthunt, PH scraper, product hunt launches, product hunt leaderboard, scrape product hunt, product hunt data, PH daily launches, product…

browser-act/skills · 152 tokens

facebook-groups-scrape-posts

Scrapes posts from a Facebook group given a group URL, sort order, and desired count — returns structured post metadata including postid, permalink, author, timestamp, body text, images/videos, reaction counts, reaction type breakdown, comment count, and share count. Use when: user wants to scrape/extract Facebook…

browser-act/skills · 119 tokens

taobao-keyword-search

Search Taobao and Tmall product listings by keyword, returning paginated product cards with title, price, shop, image, sales, and tags. Use when user asks to search Taobao, find products on Taobao/Tmall, scrape Taobao search results, get product listings from Taobao, collect Taobao items by keyword, 搜索淘宝, 淘宝关键词搜索…

browser-act/skills · 122 tokens

taobao-product-detail

Fetch full product detail from a Taobao or Tmall product page by itemId, returning title, price, shop info, images, SKU variants, and product attributes. Use when user asks to get product details from Taobao, scrape a Taobao item page, extract product info by item ID, fetch Tmall product data, 抓取淘宝商品详情, 获取淘宝商品信息…

browser-act/skills · 120 tokens