browseros

browseros is a skill for Claude Code, Codex from psthi/browseros-skill. It costs 107 tokens per session (2,313 once invoked), scanned A, original, no licence file.

A way for a coding agent to control BrowserOS, an open-source browser based on Chromium, through its built-in tool server.

In plain words
What is it for?
Use it to open pages, click, fill forms, extract data, take screenshots, manage tabs, bookmarks, and history, automate websites, or research and write files.
Why use it?
It lets the agent perform browser tasks directly instead of relying only on text-based requests or manual clicking.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to open pages, click, fill forms, extract data, take screenshots, manage tabs, bookmarks, and history, automate websites, or research and write files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/psthi/browseros-skill/browseros
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 psthi/browseros-skill --skill browseros
Clone the repo
git clone --depth 1 https://github.com/psthi/browseros-skill

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 browseros

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/psthi/browseros-skill/browseros"><img src="https://agentmods.dev/badge/skills/psthi/browseros-skill/browseros.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,313 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00107 $0.02313
Opus 5.5 $0.00043 $0.00925
Sonnet 5.5 $0.00021 $0.00463
Haiku 4.5 $0.00011 $0.00231

Measured 2mo ago against content hash 3792bb4af6d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

browseros 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.

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.

.agents/skills/browseros/SKILL.md · 154 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 2mo ago First seen · 154 lines · 107 tokens per session scan A 3792bb4af6d3

Subscribe to this mod's changes

browseros is a skill published in the GitHub repository psthi/browseros-skill (0 stars, last pushed 2mo ago), with no licence file. It adds 107 tokens to every session and 2,313 once invoked, about $0.0004 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.

Related

browseros compared with skills from other repositories

browseros next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
browserospsthi/browseros-skillSkill02mo agononeA107Claude Code, Codex
checking-a-pageawss1i/assaySkill110yesterdayMITA49Claude Code
yutori-computer-useyutori-ai/yutori-mcpSkill251mo agoApache-2.0A59Claude Code
browser-useevoelsewhere/evofluxSkill133d agoApache-2.0A222Claude Code, Codex
vibesurferfrane/vibesurferSkill171mo agoApache-2.0A81Claude Code, Codex
browseractIvanSkainet/arena-agentSkill928d agoMITA0Claude Code, Codex
yutori-browseyutori-ai/yutori-mcpSkill251mo agoApache-2.0A41Claude Code