# Get Started

## :electric\_plug: Endpoints

<table><thead><tr><th width="117.0234375">Network</th><th>Endpoint URL</th></tr></thead><tbody><tr><td><strong>Mainnet</strong></td><td>https://api.secretkeylabs.io</td></tr><tr><td><strong>Signet</strong></td><td>https://api-signet.secretkeylabs.io</td></tr><tr><td><strong>Testnet4</strong></td><td>https://api-testnet4.secretkeylabs.io</td></tr></tbody></table>

## :key: Get your API keys

Start your [free trial to get API keys](https://form.typeform.com/to/HkwDUt9P?typeform-source=xverse-api-docs). Happy building!&#x20;

## ⚡ Alternative: pay-per-request via Lightning

Don't want to manage an API key? Every Xverse API endpoint also accepts payment over the [**Machine Payments Protocol (MPP)**](https://docs.xverse.app/api/mpp-lightning-payments) — pay 1 satoshi per request via Lightning, no key required. This is the recommended path for AI agents and autonomous clients.

See MPP Lightning Payments for the full flow.

## :speech\_balloon: Developer Support & Feedback

Have feedback, feature requests, or want to partner? [Contact us](https://discord.com/invite/tN84HhSDrz) — we’d love to hear from you.

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