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docs: improve Node.js/Fetch buyer quickstart with consistent signer usage #4

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fix: update quickstart guide to include signer instantiation for x402…
gilbertsahumada Oct 21, 2025
03dfc55
comment updated
gilbertsahumada Oct 21, 2025
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20 changes: 16 additions & 4 deletions getting-started/quickstart-for-buyers.md
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Expand Up @@ -52,7 +52,19 @@ pip install x402
#### Create a Wallet Client

{% tabs %}
{% tab title="Node.js (viem)" %}
{% tab title="Node.js - Fetch " %}

Instantiate the signer:

```typescript
import { createSigner } from "x402-fetch";

// Create a signer (using your private key)
const signer = await createSigner("base-sepolia", "0xYourPrivateKey"); // we recommend using an environment variable for this
```
{% endtab %}

{% tab title="Node.js - Axios (viem)" %}
Install the required package:

```bash
Expand Down Expand Up @@ -113,12 +125,12 @@ You can use either `x402-fetch` or `x402-axios` to automatically handle 402 Paym
**x402-fetch** extends the native `fetch` API to handle 402 responses and payment headers for you. [Full example here](https://github.com/coinbase/x402/tree/main/examples/typescript/clients/fetch)

```typescript
import { wrapFetchWithPayment, decodeXPaymentResponse } from "x402-fetch";
import { wrapFetchWithPayment, decodeXPaymentResponse, createSigner } from "x402-fetch";
// other imports...

// wallet creation logic...
// signer creation logic...

const fetchWithPayment = wrapFetchWithPayment(fetch, account);
const fetchWithPayment = wrapFetchWithPayment(fetch, signer);

fetchWithPayment(url, { //url should be something like https://api.example.com/paid-endpoint
method: "GET",
Expand Down