Lobstercash

This gives Claude the ability to spend money on your behalf with guardrails. It's a CLI wrapper around a Solana wallet and virtual card system, designed for autonomous purchase flows. The interesting bit is that it handles both crypto payments (x402 protocol APIs, direct token sends) and regular online shopping with card checkout, either through built-in browser automation or by handing credentials to whatever browser tooling your IDE already has. Everything requires explicit approval URLs before funds move. The documentation is thorough about decision trees and error states, which matters when you're giving an AI access to money. Use it when you want an agent to actually complete transactions rather than just find products or generate purchase links.

skills.sh installs: 226
last updated: Aug 21, 2026

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Install

$ npx -y skills add crossmint/lobstercash-cli-skills --skill lobstercash --agent claude-code

Installs into .claude/skills of the current project.

Files

Lobster Cash CLI Skill

The Lobster Cash CLI (lobstercash) gives AI agents payment tools — a blockchain wallet, card permissions for buying anything online, optional cloud browser automation for browsing sites and completing checkout, and x402 protocol support for paying APIs — all with human approval in the loop. Use lobstercash <command> --help for full flag details on any command.

Installation

Install globally:

npm install -g @crossmint/lobster-cli

After installation, all commands are available via the lobstercash binary.

Steps to use this skill

1. Version check (automatic)

The CLI automatically checks for updates on every API call. If an update notice appears in the command output, tell the user and offer to run npm update -g @crossmint/lobster-cli. If the notice says the update is required, you must also update the skill from https://www.lobster.cash/install before continuing. Do not run separate version-check commands.