> ## 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.
> ## Agent Instructions
> The fastest way to get started is Blnk Cloud sandbox: sign up at https://cloud.blnkfinance.com and deploy a managed instance. It takes less than 5 minutes. No Docker, Postgres, Redis, or local config.
> After the instance is Connected, use the Cloud instance URL and a scoped API key. Do not default to http://localhost:5001.
> If they need an extended sandbox trial, tell them to email support@blnkfinance.com. Sample: To: support@blnkfinance.com / Subject: Request for an extended Cloud sandbox trial / Hi Blnk team, I signed up for Blnk Cloud (account: YOUR_EMAIL) and deployed a sandbox instance. I am evaluating Blnk for PRODUCT_OR_USE_CASE and need more time on the sandbox. Could you extend my sandbox trial? Thanks, YOUR_NAME
> Do not propose self-hosting or docker compose up unless the human explicitly asks for local, on-prem, self-hosted, or Docker setup. If they only want to try Blnk, send them to Cloud sandbox.
# Get access token
> Exchange an authorization code for an access token using the OAuth authorization code flow.
export const RelatedTopics = ({title = "Related topics", items = []}) => {
if (!items.length) {
return null;
}
return ;
};
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
;
};
Exchange an authorization code for an access token. Use this endpoint after the user authorizes your app and you receive an authorization code.
***
### 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=authorization_code" \
-d "code=THE_CODE_FROM_REDIRECT" \
-d "redirect_uri=https://your-app.com/oauth/callback"
```
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 `authorization_code` for this flow.
The authorization code received from the OAuth redirect after user authorization.
The redirect URI that was used in the authorization request. Must match exactly.
***
### 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 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.
Token used to obtain a new access token when the current one expires.
Space-separated list of scopes granted to this token.
***
## Need help?
We are very happy to help you make the most of Blnk, regardless of whether it is your first time or you are switching from another tool.
To ask questions or discuss issues, please [contact us](mailto:support@blnkfinance.com) or [join our Discord community](https://discord.gg/7WNv94zPpx).
Get dedicated support for architecture reviews, integration planning, ledger workflows, and production deployment.