# @three-ws/vscode-x402 > Browse the x402 bazaar, decode 402 payment challenges, and pay per call for paid APIs and MCP tools in USDC or $THREE on Solana and Base, without leaving VS Code. Powered by three.ws. @three-ws/vscode-x402 is a JavaScript library from three.ws. Install: `npm install @three-ws/vscode-x402`. ## Docs - [README](https://github.com/nirholas/vscode-x402/blob/main/README.md): install, configuration, full reference - [Documentation site](https://nirholas.github.io/vscode-x402/): the README as a web page - [Full text for LLMs](https://nirholas.github.io/vscode-x402/llms-full.txt): README inlined - [AGENTS.md](https://github.com/nirholas/vscode-x402/blob/main/AGENTS.md): guidance for coding agents ## Project - [Source](https://github.com/nirholas/vscode-x402) - [npm](https://www.npmjs.com/package/@three-ws/vscode-x402) - [three.ws](https://three.ws): the platform this is part of - [Issues](https://github.com/nirholas/vscode-x402/issues)