# How do I try Neonjelly without using trial quota?

Try a store or product lookup. On-page Run is cached and does not use trial quota.

Open [/playground](https://www.neonjelly.io/playground.md). Same widget sits on the home page.

## Modes

- **API** — `GET https://mcp.neonjelly.io/v1/…` with `Authorization: Bearer nj_`
- **MCP** — `tools/call` over `POST /mcp` (copied curl). On-page **Run** goes through `/api/playground`.

## How to use

1. Pick API or MCP.
2. Pick a preset (`whoami`, stores, products, playbooks, diligence, …). On-page `whoami` has no user key — connect a trial URL in Cursor for real quota.
3. Edit the fields.
4. Hit **Run** — cached ~15 minutes, does **not** count against your trial (100/day, 20/min).
5. Copy curl to run the same call with **your** key. Curl **does** count against quota.

Paste `nj_` or `njc_` in the key field only if you want it in the curl snippet. Do not put the key in a query string.

Fast path if you only want a first hit: [/start](https://www.neonjelly.io/start.md).

## Curl shape

API:

```bash
curl -sS -H "Authorization: Bearer $NJ_KEY" \
  "https://mcp.neonjelly.io/v1/stores?q=gruntstyle&limit=3"
```

MCP:

```bash
curl -sS -H "Authorization: Bearer $NJ_KEY" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"resolve_store","arguments":{"q":"gruntstyle"}}}' \
  https://mcp.neonjelly.io/mcp
```

A raw MCP client must `initialize` first. The copied curl is the `tools/call` you want after init.

Stage on [/capabilities](https://www.neonjelly.io/capabilities.md) is canned samples. On-page Run is cached and quota-free. Curl / your own key still meters.

## Related

- [Where is the Neonjelly documentation?](https://www.neonjelly.io/docs.md)
- [What is the Neonjelly catalog REST API?](https://www.neonjelly.io/docs/api.md)
- [What MCP tools does Neonjelly expose?](https://www.neonjelly.io/docs/tools.md)
- [How do I install Neonjelly MCP in Cursor, Claude, or ChatGPT?](https://www.neonjelly.io/docs/install.md)
- [How do I start a Neonjelly trial?](https://www.neonjelly.io/start.md)

HTML: https://www.neonjelly.io/docs/playground
Markdown: https://www.neonjelly.io/docs/playground.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.