Build with the Buildside API

Search public founders and products, combine category and business filters, and integrate Buildside data into your own tools.

What’s changed

• Sign in at developers.buildside.app with your existing Buildside account to manage API keys, explore documentation, and test with free sample data.
• Start free with 100 record requests and 30 searches every month, no credit card required. After that, pay US$1 per 1,000 searches and US$0.10 per 1,000 returned detail records from optional prepaid credits in US$5 increments.
• Track usage and receipts, set spending limits, and create secret keys that are shown only once. Private profiles and private financial figures stay protected.