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What is Sure?

Sure is a community-maintained open-source personal finance application for wealth management and financial tracking. It’s a fork of the now-abandoned Maybe Finance project, which you can self-host to manage your personal finances privately. Learn more about Sure →

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How to Set Up

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Prerequisites

  • A Sure instance (self-hosted or using a hosting provider)
  • At least one bank connected in Lunch Flow

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Setup Steps

1
Create a Sure destination in Lunch Flow:
  1. Go to the Destinations page in Lunch Flow
  2. Click Add Destination
  3. Select Sure
  4. Click Create Sure Destination
2
Copy your API key:
  1. After creating the destination, you’ll see your API key
  2. Click the copy button to copy the API key to your clipboard
3
Configure Sure to connect to Lunch Flow:
  1. Log into your Sure instance
  2. Navigate to Settings → Providers
  3. Find Lunch Flow and expand it
  4. Paste your API key in the API Key field
  5. Click Save Configuration
4
Link your accounts in Sure:
  1. After a successful connection, go to the Accounts tab in Sure
  2. Set up new accounts and link them to your existing ones

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FAQ

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How often does data sync?

Sure fetches data from Lunch Flow based on its configured sync schedule. You can also manually trigger a sync at any time from Sure’s interface.

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Does my Sure instance need to be public?

No! With the new integration, Sure pulls data from Lunch Flow’s API. Your Sure instance only needs outbound internet access to connect to Lunch Flow - it doesn’t need to be publicly accessible.

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I have an existing Sure destination with the old setup. What should I do?

Your existing setup will continue to work. However, we recommend migrating to the new integration for a simpler, more reliable experience:
  1. Create a new Sure destination in Lunch Flow (this generates an API key)
  2. Configure Sure’s Lunch Flow provider with the API key
  3. Once working, you can remove the old destination

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