> ## 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.
# API Keys
> Learn how to create and manage API keys for access to Blnk Cloud APIs.
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API keys let you securely authenticate with Blnk Cloud APIs. They allow your applications, scripts, and automated workflows to interact with Blnk Cloud programmatically.
You can manage your API keys in [Settings > API Keys](https://cloud.blnkfinance.com/cloud/settings/api-keys).
**Keep your API keys secure and rotate them regularly.** API keys provide full access to your account based on their assigned scopes. Never share API keys publicly or commit them to version control.
***
## How API keys work
When you make an API call, include your API key in the request headers to verify your identity and authorize the operation on your Cloud workspace.
Each API key has:
* **Name:** A user-friendly identifier to help you organize and identify keys
* **Key prefix:** A partial identifier visible in the API keys list (e.g., `blnk_fdb796a5...`)
* **Scopes:** Permissions that define what the key can access (e.g., `*` for all permissions, or specific scopes like `mcp:read, mcp:write`)
* **Expiration:** Optional expiration date, or `Never` for keys that don't expire
***
## Create an API key
Go to [Settings > API Keys](https://cloud.blnkfinance.com/cloud/settings/api-keys).
Click `Create API key` in the top-right corner of the page.
In the `Create API key` panel, fill in the required details:
* **Name:** A descriptive name (for example, `Alerts Integration`)
* **Type:** `API Key` for server-to-server auth, or `OAuth` for MCP and third-party integrations
* **Expiration:** Choose when the key should expire (for example, `30 days`, or `Never`)
* **Scopes:** Select the permissions this key needs
Click `Create API key`. The full key is shown **only once** on the `Save your API key` screen. Copy it and store it securely before clicking `Done`.
You cannot retrieve the full API key after creation. If you lose the key, you must create a new one.
***
## Update expiration
You can change when an API key expires without creating a new key.
Click an API key name in the API Keys table to open its details panel.
In **Quick actions**, click `Update expiration`.
Select a new expiration (`Never expires`, `7 days`, `30 days`, `60 days`, or `90 days`), then confirm your change.
The key keeps working with the same secret. Only its expiration date changes.
***
## Revoke an API key
If you need to disable an API key without deleting it permanently, you can revoke it. Revoked keys cannot be used for authentication but remain visible in your API keys list for reference.
Click the API key name in the API Keys table to view its details.
In the API key details panel, click `Revoke`.
Revoking a key will immediately disable it. Any applications or scripts using this key will stop working until you create and configure a new one.
Confirm that you want to revoke the key. The key's status will change to **Revoked** in the API Keys table.
***
## 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.
The key keeps working with the same secret. Only its expiration date changes.