> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trepzy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Getting started

> Create a sandbox credential and retrieve a refund with retrieveRefund.

# Getting started

[Intro](#intro)

<h2 id="intro">
  Intro
</h2>

Use the Seller API from HTTP, an SDK, the CLI, or MCP. Every face calls the same public operation with the same auth, permission, idempotency, and errors.

1. Create a human-rooted service account in the Dashboard.
2. Grant only the actions you need, then reveal the credential once.
3. Call `retrieveRefund` in sandbox with `refund_ref`.

Live examples are copy-only. Try It on this portal requests a short Trepzy token, calls sandbox directly, and never uses a Mintlify proxy.

Continue to [auth](./auth#intro) or the [REST reference](./reference#openapi-reference).

<h2 id="quickstarts">
  Quickstarts
</h2>

The seven candidate SDKs share one client shape: explicit `sandbox` or `live`, a credential, and a timeout. Snippets in `snippets/` compile against that overlay and the conformance sandbox.

```ts theme={null}
const operationId: string = 'retrieveRefund'
const refund_ref: string = 'ref_0123456789AB'
```

Wire names stay `refund_ref` and `operation_id` in every language.