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.
npx agentmods add skills/unicomai/wanwu/bsessionnpx skills add UnicomAI/wanwu --skill bsessiongit clone --depth 1 https://github.com/UnicomAI/wanwuWrote 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.
[](https://agentmods.dev/skills/unicomai/wanwu/bsession)<a href="https://agentmods.dev/skills/unicomai/wanwu/bsession"><img src="https://agentmods.dev/badge/skills/unicomai/wanwu/bsession.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00040 | $0.01975 |
| Opus 5 | $0.00020 | $0.00988 |
| Sonnet 5 | $0.00008 | $0.00395 |
| Haiku 4.5 | $0.00004 | $0.00198 |
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 4d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
import urllib.request 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:
bsessionon PATH → usebsession~/.bsession/bsessionexists → use~/.bsession/bsession./bsessionin current directory → use./bsession- None found but container is running (
docker exec agent-browser echo ok) → usedocker exec agent-browser python3 /app/session.pyas the CLI
Similarly, resolve workspace:
~/.bsession/workspace/exists → use it./workspace/in current directory → use it- 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 setupfor a fresh install, or - Run
docker compose up -dfrom the bsession project directory
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.
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.
- 4d ago First seen · 255 lines · 40 tokens per session scan A 2eb0360e8cee
browser is a skill published in the GitHub repository UnicomAI/wanwu (2,455 stars, last pushed 1mo 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. 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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