browser

browser is a skill for Claude Code from UnicomAI/wanwu. It costs 40 tokens per session (1,975 once invoked), scanned A, original, Apache-2.0.

A browser-automation guide for using bsession, a browser environment that can fetch website information, run automations, and debug sessions.

In plain words
What is it for?
It is for one-time website fetching, scripted or recurring browser automations, and debugging existing browser sessions.
Why use it?
It explains how to locate the browser tool and workspace before attempting browser tasks.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: built for openclaw.

Good fit It is for one-time website fetching, scripted or recurring browser automations, and debugging existing browser sessions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/unicomai/wanwu/bsession
About the project

Wanwu is an enterprise platform for building AI agents, workflows, retrieval-augmented applications, and managing models in multi-tenant environments. It is designed for developers and enterprise teams delivering AI applications and integrations. The catalogue entries provide skills and agents for using the platform.

UnicomAI/wanwu · 2,372 stars · on GitHub

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 UnicomAI/wanwu --skill bsession
Clone the repo
git clone --depth 1 https://github.com/UnicomAI/wanwu

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 browser

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/unicomai/wanwu/bsession"><img src="https://agentmods.dev/badge/skills/unicomai/wanwu/bsession.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,975 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 3
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Server-Side Request Forgery · line 126
    Code issues a request to a loopback, link-local, or private-range host. This can reach internal services not meant to be exposed and is a common SSRF pivot.
    Fix: Avoid requests to loopback/link-local/private hosts from skill code. If internal access is intended, document it and validate the target against an allowlist.
How audits are shown
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 5.1 $0.00040 $0.01975
Opus 5.5 $0.00016 $0.00790
Sonnet 5.5 $0.00008 $0.00395
Haiku 4.5 $0.00004 $0.00198

Measured 1mo ago against content hash 2eb0360e8cee, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

browser scanned grade A with 1 finding 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 1 executable file (scripts/install.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.

Makes network callslowCapability

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

import urllib.request
configs/microservice/bff-service/configs/agent-skills/clawhub/bsession/SKILL.md · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/browser skill

You help users automate browsers inside the bsession Docker container — whether it's initial setup, a quick interactive fetch, a scripted automation (one-shot or recurring), or debugging an existing session.

This is a global skill — it works from any repo. bsession is installed at ~/.bsession/, and the bsession CLI is on PATH.

Resolve paths

Before doing anything, determine how to reach bsession. Check in this order:

  1. bsession on PATH → use bsession
  2. ~/.bsession/bsession exists → use ~/.bsession/bsession
  3. ./bsession in current directory → use ./bsession
  4. None found but container is running (docker exec agent-browser echo ok) → use docker exec agent-browser python3 /app/session.py as the CLI

Similarly, resolve workspace:

  1. ~/.bsession/workspace/ exists → use it
  2. ./workspace/ in current directory → use it
  3. Ask docker exec agent-browser ls /workspace/conf → use docker exec to access files

Use these resolved paths for all commands throughout the session.

Constants (defaults)

  • BSESSION_HOME: ~/.bsession/ — where bsession source + docker-compose live
  • WORKSPACE: ~/.bsession/workspace/ (default, overridable) — or resolved per above
  • bsession CLI: resolved per above

Routing

Parse the user's slash command arguments:

  • No arguments or list → List mode (show all available scripts and sessions)
  • setup → Setup mode (install and configure bsession)
  • fetch <url> → Fetch mode (interactive one-shot extraction, with option to persist)
  • new <name> → Create mode (scaffold a script — one-shot or recurring)
  • run <name> → Run mode (execute a saved session and show results)
  • Otherwise → Debug mode (inspect/fix an existing session)

Pre-check (all modes except setup)

Before running any mode except setup, verify the container is running:

docker exec agent-browser echo ok 2>/dev/null

If this fails, tell the user to either:

  • Run /browser setup for a fresh install, or
  • Run docker compose up -d from the bsession project directory

Read the full file on GitHub · 255 lines

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. 1mo ago First seen · 255 lines · 40 tokens per session scan A 2eb0360e8cee

Subscribe to this mod's changes

browser is a skill published in the GitHub repository UnicomAI/wanwu (2,372 stars, last pushed 4d ago), licensed Apache-2.0. It adds 40 tokens to every session and 1,975 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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