vercel-sandbox

vercel-sandbox is a skill for Claude Code, Codex from JayAI623/claude-code-config. It costs 126 tokens per session (2,436 once invoked), scanned B, original, no licence file.

A skill for running an automated Chrome browser inside Vercel Sandbox microVMs. Browser automation means having software open pages and interact with them without manual clicking.

In plain words
What is it for?
Use it for browser automation in a Vercel app when you need persistent browser sessions or want to avoid browser binary size limits.
Why use it?
It provides a place to run headless Chrome for a Vercel-deployed app, including apps built with frameworks such as Next.js, SvelteKit, Nuxt, Remix, and Astro.

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/jayai623/claude-code-config/vercel-sandbox
Any agent
npx skills add JayAI623/claude-code-config --skill vercel-sandbox
Clone the repo
git clone --depth 1 https://github.com/JayAI623/claude-code-config

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 vercel-sandbox

README.md
[![agentmods](https://agentmods.dev/badge/skills/jayai623/claude-code-config/vercel-sandbox.svg)](https://agentmods.dev/skills/jayai623/claude-code-config/vercel-sandbox)
Your own site
<a href="https://agentmods.dev/skills/jayai623/claude-code-config/vercel-sandbox"><img src="https://agentmods.dev/badge/skills/jayai623/claude-code-config/vercel-sandbox.svg" alt="Measured on agentmods" height="20"></a>
Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,436 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
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 $0.00126 $0.02436
Opus 5 $0.00063 $0.01218
Sonnet 5 $0.00025 $0.00487
Haiku 4.5 $0.00013 $0.00244

Measured 5d ago against content hash 15da32dca80c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade B, and why

vercel-sandbox scanned grade B 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 5d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

`sudo dnf clean all 2>&1 && sudo dnf install -y --skip-broken ${CHROMIUM_SYSTEM_DEPS.join(" ")} 2>&1 && sudo ldconfig 2>&1`,
skills/vercel-sandbox/SKILL.md · 281 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 5d ago First seen · 281 lines · 126 tokens per session scan B 15da32dca80c

Subscribe to this mod's changes

vercel-sandbox is a skill published in the GitHub repository JayAI623/claude-code-config (2 stars, last pushed 5mo ago), with no licence file. It adds 126 tokens to every session and 2,436 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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