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 skills add Peiiii/nextclaw --skill bb-browsergit clone --depth 1 https://github.com/Peiiii/nextclawWrote 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/peiiii/nextclaw/bb-browser)<a href="https://agentmods.dev/skills/peiiii/nextclaw/bb-browser"><img src="https://agentmods.dev/badge/skills/peiiii/nextclaw/bb-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.
<a href="https://agentmods.dev/skills/peiiii/nextclaw/bb-browser"><img src="https://agentmods.dev/badge/skills/peiiii/nextclaw/bb-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00032 | $0.01582 |
| Opus 5.5 | $0.00013 | $0.00633 |
| Sonnet 5.5 | $0.00006 | $0.00316 |
| Haiku 4.5 | $0.00003 | $0.00158 |
Grade A, and why
bb-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.
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.
How it starts
The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.
bb-browser
Overview
Use this skill when the user wants to use the web through their real browser session inside NextClaw.
This marketplace skill wraps the upstream epiral/bb-browser project for NextClaw users.
Be explicit about the boundary:
- This skill owns explanation, installation guidance, readiness checks, workflow selection, and risk disclosure.
- The local
bb-browserCLI owns actual browser execution. - The user's browser login state owns access to private pages and authenticated requests.
Do not pretend the environment is ready when it is not.
What This Skill Covers
- site adapters such as
twitter/search,reddit/thread,github/repo,zhihu/hot,youtube/transcript, - authenticated browser-backed
fetch, - browser automation flows such as
open,snapshot,click,fill,eval,network requests, andscreenshot, - local daemon mode with the user's real Chrome state,
- optional
--openclawpath when the user already wants to run through OpenClaw's browser, - first-use setup and bounded troubleshooting.
What This Skill Does Not Cover
- inventing site adapters or flags that
bb-browserdoes not expose, - pretending a site command is safe when it can write, post, delete, purchase, or change account state,
- hiding missing prerequisites such as the local CLI, running browser, daemon connectivity, or login state,
- presenting third-party browser execution as native built-in NextClaw capability,
- silently creating or publishing new adapters to the upstream ecosystem.
Install Boundary
Always distinguish these paths:
- NextClaw marketplace skill install:
nextclaw skills install bb-browser - Upstream runtime install:
npm install -g bb-browser - Optional MCP wiring outside NextClaw:
configure
bb-browser --mcpin the target MCP client
Installing the marketplace skill does not install the upstream runtime automatically.
Deterministic First-Use Workflow
When the user asks for a bb-browser task, follow this order.
What ships with it
2 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.
- 1mo ago First seen · 242 lines · 32 tokens per session scan A 3b0db9fdcf91
bb-browser is a skill published in the GitHub repository Peiiii/nextclaw (262 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 1,582 once invoked, about $0.0001 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 2026-09-03.
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