> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Refresh access token
> Obtain a new access token using a refresh token when the current access token expires.
export const CtaCallout = props => {
const {title, buttonLabel, href, trackingEvent, buttonTarget, rel = "noopener noreferrer", children} = props;
const handleCtaClick = () => {
if (typeof window === "undefined" || !trackingEvent) {
return;
}
try {
window.dispatchEvent(new CustomEvent("blnk:docs-cta", {
detail: {
name: trackingEvent,
href
}
}));
} catch {}
try {
window.posthog?.capture?.(trackingEvent, {
href
});
} catch {}
const gaPayload = {
cta_href: href
};
try {
window.gtag?.("event", trackingEvent, gaPayload);
} catch {}
try {
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
event: trackingEvent,
...gaPayload
});
} catch {}
};
const isExternal = typeof href === "string" && (/^https?:\/\//i).test(href);
const target = buttonTarget ?? (isExternal ? "_blank" : undefined);
const linkRel = isExternal ? rel : undefined;
return ;
};
Refresh an expired access token using the refresh token you received when obtaining the original access token.
***
### Request structure
```bash cURL theme={"system"}
curl -X POST https://api.cloud.blnkfinance.com/oauth/token \
-H "Content-Type: application/x-www-form-urlencoded" \
-u "YOUR_CLIENT_ID:YOUR_CLIENT_SECRET" \
-d "grant_type=refresh_token" \
-d "refresh_token=blnk_rt_YOUR_REFRESH_TOKEN_HERE"
```
Basic authentication using your OAuth client ID and client secret. Format: `Basic base64(client_id:client_secret)` or use `-u` flag in cURL.
Must be `refresh_token` for this flow.
The refresh token received when obtaining the original access token.
***
### Response structure
```json Success theme={"system"}
{
"access_token": "blnk_at_...",
"token_type": "Bearer",
"expires_in": 3600,
"refresh_token": "blnk_rt_...",
"scope": "data:read data:write proxy:write"
}
```
The new access token to use for authenticating API requests. Include in the `Authorization: Bearer ` header.
Always `Bearer` for access tokens.
Number of seconds until the access token expires.
A new refresh token. Use this token for future refresh requests.
Space-separated list of scopes granted to this token.
***
## Need help?
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To ask questions or discuss issues, please [contact us](mailto:support@blnkfinance.com) or [join our Discord community](https://discord.gg/7WNv94zPpx).
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