# Getting started

Source: https://geondex.com/docs

> Get a key, connect your agent over MCP or call the REST API, and ask four AI engines whether they cite your site.



Geondex asks Perplexity, ChatGPT, Claude and Gemini the question a buyer would ask, each with web search on, and tells you whether your site is cited, at what position, and who is cited instead. It stores each answer, so the next identical check comes back with what changed.

You use it from your agent through the [MCP server](/docs/mcp), or from any script through the [REST API](/docs/api). Both expose the same seven calls and return the same JSON.

## Quickstart

1. [Sign in with Google](/signup) and create a key on your [account page](/account). Keys start with `gx_`.
2. Install the [MCP server](/docs/mcp) in Claude Code, Cursor, VS Code, Windsurf, Codex or Claude Desktop, or use the [REST API](/docs/api).
3. Ask: *"Check mysite.com for 'best X for Y' on all four engines."*
4. Ask again next week. The delta comes back with the answer.

200 free credits arrive every month, on every account. No card.

Want to see a real response first? The [playground](/playground) builds the exact request for any call and runs it from your browser.

## Your first call over HTTP

Replace `gx_YOUR_KEY` with your key. `GET /me` is free and shows your balance:

```bash
curl -s https://geondex.com/api/v1/me -H "Authorization: Bearer gx_YOUR_KEY"
```

Then run a check. This one costs 3 credits per engine that answers, so 12 for all four:

```bash
curl -s https://geondex.com/api/v1/check -H "Authorization: Bearer gx_YOUR_KEY" -H "content-type: application/json" -d '{"domain":"ttsensei.com","prompt":"best table tennis blade for beginners"}'
```

## Where to go next

* [How a check works](/docs/how-a-check-works): what "cited", "position" and the delta mean, and what every response looks like.
* [Authentication](/docs/authentication): keys, headers and the free `GET /me`.
* [Credits & pricing rules](/docs/credits): what each call costs and when credits reset.
* [Errors & rate limits](/docs/errors): every `error.code` and what to do about it.
* [API reference](/docs/api): one page per endpoint, with a full request and response.
* [MCP server](/docs/mcp) and [agent skills](/docs/mcp/skills): let your agent make the calls.

## Support

Email [hello@geondex.com](mailto:hello@geondex.com). The [FAQ](/faq) covers the common questions; [status](/status) shows current availability.