> For the complete documentation index, see [llms.txt](https://docs.nwc.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nwc.dev/reference-api/overview/lookup_invoice.md).

# lookup\_invoice

### **Use case**

The app requests to lookup a [BOLT-11](https://github.com/lightningnetwork/lightning-rfc/blob/master/11-payment-encoding.md) invoice from the wallet.

### **Request**

```json
{ 
    "method": "lookup_invoice",
    "params": {
        "payment_hash": "31afdf1..", // payment hash of the invoice, one of payment_hash or invoice is required
        "invoice": "lnbc50n1..." // invoice to lookup
            }
}
```

### **Response**

```json
{
    "result_type": "lookup_invoice",
    "result": {
        "type": "incoming", // "incoming" for invoices, "outgoing" for payments
        "invoice": "string", // encoded invoice, optional
        "description": "string", // invoice's description, optional
        "description_hash": "string", // invoice's description hash, optional
        "preimage": "string", // payment's preimage, optional if unpaid
        "payment_hash": "string", // Payment hash for the payment
        "amount": 123, // value in msats
        "fees_paid": 123, // value in msats
        "created_at": unixtimestamp, // invoice/payment creation time
        "expires_at": unixtimestamp, // invoice expiration time, optional if not applicable
        "settled_at": unixtimestamp, // invoice/payment settlement time, optional if unpaid
        "metadata": {} // generic metadata that can be used to add things like zap/boostagram details for a payer name/comment/etc.
    }
}
```


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