# How do I use npx neonjelly? Stdio MCP for Cursor or Claude Desktop, plus GET catalog calls. Same nj_ key. Package page: [/npx](https://neonjelly.io/npx.md). npm: [neonjelly](https://www.npmjs.com/package/neonjelly). ```bash npx neonjelly login npx neonjelly whoami npx neonjelly get '/v1/stores?q=gruntstyle&limit=3' ``` ## Two jobs - **MCP** - empty argv + piped stdin proxies JSON-RPC to `https://mcp.neonjelly.io`. Cursor / Claude Desktop spawn `npx -y neonjelly`. - **GET** - `npx neonjelly get ` hits the same catalog as [/docs/api](https://neonjelly.io/docs/api.md). Quote the path so `&` stays in the URL. Auth, first match: `--key` / `NEONJELLY_API_KEY` / `~/.neonjelly/config.json` after login. Connect URL: `--url` / `NEONJELLY_CONNECT_URL`. An `njc_` token becomes `/c/{token}/mcp`. `npx neonjelly init` prints stdio, HTTP, and Claude Code snippets. ## Trial 14 days, 100/day, 20/min. Same IP as [/start](https://neonjelly.io/start.md) reuses that trial. Secret shown once. Signals paid only. Expired → [/pricing](https://neonjelly.io/pricing.md). Missing store stays `not_found`. No scrape. No catalog write. ## Related - [Where is the Neonjelly documentation?](https://neonjelly.io/docs.md) - [How do I install Neonjelly MCP in Cursor, Claude, or ChatGPT?](https://neonjelly.io/docs/install.md) - [How do Neonjelly keys and auth work?](https://neonjelly.io/docs/auth-and-keys.md) - [What is the Neonjelly catalog REST API?](https://neonjelly.io/docs/api.md) - [What MCP tools does Neonjelly expose?](https://neonjelly.io/docs/tools.md) - [How do I start a Neonjelly trial?](https://neonjelly.io/start.md) HTML: https://neonjelly.io/docs/npx Markdown: https://neonjelly.io/docs/npx.md Do not scrape. Do not probe. Missing store stays `not_found`. Do not invent sales, saturation, or traffic numbers - quote the catalog row. Signals (ads and daily units) are paid only. Trial keys get 403 on create_signal and signal reads. Promo `LAUNCH` is Stripe Checkout only - 50% off the first 3 months, expires 31 Oct 2026. Not MCP metadata.