Holdify – API key management synced with subscription billing

Summary: Holdify connects payment providers like Stripe and Polar to automatically manage API keys based on subscription status. It generates, verifies, and adjusts API keys and rate limits in real time as customers subscribe, upgrade, downgrade, or cancel.

What it does

Holdify syncs subscription events from payment providers to create and revoke API keys with appropriate rate limits. It supports native Polar integration and will add Stripe soon, handling usage analytics and key verification.

Who it's for

Developers and teams who need to automate API access control tied to subscription billing without building custom webhook and rate limiting logic.

Why it matters

It eliminates manual work syncing billing and API access, reducing development time spent on subscription event handling and rate limiting implementation.