# Get Session JWT Public Key

{% hint style="info" %}
Retrieve the public key used to verify session JWTs locally.
{% endhint %}

**Endpoint:** `/jwt/publicKey`\
**Method:** GET

{% tabs %}
{% tab title="Success Response (200)" %}

```typescript
{
    publicKey: string; // Base64 encoded public key
}
```

{% endtab %}

{% tab title="Error Response (400)" %}

```typescript
{
    error: string;
}
```

{% endtab %}
{% endtabs %}

## Example Usage

```typescript
// Fetch the public key
const response = await axios.get(apiEndpoint + '/jwt/publicKey');
const publicKey = response.data.publicKey;

// Verify a JWT locally
const decodedToken = jwt.verify(token, Buffer.from(publicKey, 'base64').toString('utf-8'), { algorithms: ['ES256'] });
```

{% hint style="info" %}
The public key can be used to verify session JWTs locally without making API calls.
{% endhint %}

{% hint style="warning" %}
Cache the public key and reuse it for multiple verifications. Only fetch a new key if verification fails.
{% endhint %}


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