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

# sample

> Assemble receipts from bundled fixtures — the zero-setup first taste.

```sh theme={null}
haia-trace sample [template]
```

`sample` replays a bundled fixture run through the *real* assembler, so you see a
Receipt with no setup. It defaults to the `x402-payment` template. The template
name selects both the template and its fixture set, so a new scenario is data — a
template file plus a fixture file — never a code change.

## Example

```sh theme={null}
haia-trace sample x402-payment
```

The `x402-payment` fixture contains three operations, showing the whole model at
once:

```text theme={null}
🧾 x402-payment · op-1 · FULL

  ✔ intent           confirmed
  ✔ payment          confirmed
  ✔ settlement       confirmed
  ✔ paid_action      confirmed
  ✔ business_record  confirmed

  operation completed
  ────────────────────────────
🧾 x402-payment · op-2 · PARTIAL

  ✔ intent           confirmed
  ✔ payment          confirmed
  ✔ settlement       confirmed
  ✖ paid_action      not confirmed  required
  ✖ business_record  not confirmed  optional

  missing
    paid_action — settlement confirmed, but the paid action's result was not observed

  operation not complete
  ────────────────────────────
🧾 x402-payment · op-3 · PARTIAL

  ✔ intent           confirmed
  ✔ payment          confirmed
  ✖ settlement       not confirmed  required
  ✖ paid_action      not confirmed  required
  ✖ business_record  not confirmed  optional

  exceptions
    ⚠ x402.settle.failed

  missing
    settlement — expected one of: x402.payment.responded, x402.settle.ok, chain.transfer.confirmed
    paid_action — settlement confirmed, but the paid action's result was not observed

  operation not complete
```

<Tip>
  `sample` and [`build`](/cli/build) run the identical assembler — the only
  difference is where the events come from. See [what a Receipt
  is](/concepts/operation-receipt).
</Tip>