vercel-sandbox SKILL.md skillA
vercel-sandbox from vercel-labs/agent-browser is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vercel-labs/agent-browser/vercel-sandbox@git:20260910.8c15ff9Pins git:20260910.8c15ff9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vercel-labs/agent-browser
- Path
skill-data/vercel-sandbox/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260910.8c15ff9, committed Sep 10, 2026
- First version recorded
- Apr 12, 2026
- Size
- 7,887 bytes
- Repository stars
- 44,324
- License
- Apache-2.0
Run agent-browser + Chrome inside Vercel Sandbox microVMs for browser automation from any Vercel-deployed app. Use when the user needs browser automation in a Vercel app (Next.js, SvelteKit, Nuxt, Remix, Astro, etc.), wants to run headless Chrome without binary size limits, needs persistent browser sessions across commands, or wants ephemeral isolated browser environments. Triggers include "Vercel Sandbox browser", "microVM Chrome", "agent-browser in sandbox", "browser automation on Vercel…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Browser Automation with Vercel Sandbox
Run agent-browser + headless Chrome inside ephemeral Vercel Sandbox microVMs. A Linux VM spins up on demand, executes browser commands, and shuts down. Works with any Vercel-deployed framework (Next.js, SvelteKit, Nuxt, Remix, Astro, etc.).
## Dependencies
```bash
pnpm add @agent-browser/sandbox @vercel/sandbox
```
The sandbox VM needs system dependencies for Chromium plus agent-browser itself. The `@agent-browser/sandbox` helpers install them by default for fresh sandboxes and use sandbox snapshots (below) for sub-second startup. Pass `installSystemDependencies: false` only when the sandbox image already provides Chromium's required libraries.
## Core Pattern
```ts
import {
createAgentBrowserSnapshot,
runAgentBrowserCommand,
withAgentBrowserSandbox,
type VercelSandboxSession,
} from "@agent-browser/sandbox/vercel";
async function withBrowser<T>(
fn: (sandbox: VercelSandboxSession) => Promise<T>,
): Promise<T> {
return withAgentBrowserSandbox(fn);
}
```
## Screenshot
The `screenshot --json` command saves to a file and returns the path. Read the file back as base64:
```ts
…Read the whole file at its exact version.
How to install
mdr add vercel-labs/agent-browser/vercel-sandbox@sha256:0ea19ce5023fa991The line at the top of this page pins the label git:20260910.8c15ff9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_teq4lea7orarfa5a)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Apr 12, 2026 and Sep 10, 2026, about one every 50 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.8c15ff9 latest | 2026-09-10 | 8c15ff9 | 7,887 B | A | view · diff |
| git:20260621.583b752 | 2026-06-21 | 583b752 | 7,722 B | A | view · diff |
| git:20260620.f0ceebd | 2026-06-20 | f0ceebd | 7,595 B | A | view · diff |
| git:20260412.7c2ff0a | 2026-04-12 | 7c2ff0a | 9,671 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7887 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
vercel-labs/agent-browser · 44,324 stars · license Apache-2.0 · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_teq4lea7orarfa5a GET https://markdownregistry.com/api/v1/resolve?ref=vercel-labs/agent-browser/vercel-sandbox GET https://markdownregistry.com/api/v1/blob/0ea19ce5023fa991aef7dbe6146f500b59eb94727a66428600acd0b66c9df1ee
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.