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X402

X402 is an agent skill (a SKILL.md file) from browser-use/browser-use. Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. It works with Claude Code, Codex and Cursor and has 117,307 GitHub stars across a repository of 5 listed skills.

github.com/browser-use/browser-use/skills/x402 (opens in a new tab)

  • Official
  • Multi-skill repo
  • Needs API key
  • Coding
  • Actively maintained
View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/browser-use/browser-use.git
cp -r browser-use/skills/x402 ~/.claude/skills/x402   # personal, or .claude/skills in a project

In the Claude apps, zip the x402 folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/browser-use/browser-use.git
cp -r browser-use/skills/x402 .agents/skills/x402   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/browser-use/browser-use.git
cp -r browser-use/skills/x402 .cursor/skills/x402   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. Two setups it works out up front — "just use it" (set up a wallet so you or Claude Code can run cloud browser tasks paid from the wallet — Claude writes and runs throwaway scripts, nothing touches your codebase) or "build it in" (install the SDK and write the key + code into your project). Walks through wallet setup, funding, .env, and a ~$1 test run.

When it triggers

  • Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key.
  • Use when the user asks about x402, pay-per-use, USDC payments, or wants Browser Use Cloud without an API key.
  • "just use it"
  • "build it in"

More skills in browser-use/browser-use

5 skills are listed from this repository.

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FAQ

X402 FAQ

Still curious? Email info@appsgit.com.

What is the X402 skill?

X402 is an agent skill (a SKILL.md file) from browser-use/browser-use. Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. It works with Claude Code, Codex and Cursor and has 117,307 GitHub stars across a repository of 5 listed skills. Its SKILL.md lives at github.com/browser-use/browser-use/skills/x402.

How do I install the X402 skill?

Copy the x402 folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the X402 skill free?

Yes. The repository is open source under the MIT license. The skill mentions an API key or token for an external service, which may need its own account.

Is X402 maintained?

The repository's most recent commit was on Oct 7, 2026. Its latest release is 0.13.11. appsgit only lists skills from repositories with a commit in the last six months.