A mock Payment Service Provider (PSP) for developers.
Simulate PaymentIntents, Payments, and Webhooks without needing access to a real PSP.
Great for testing, learning payment flows, or demo projects.
👉 Live Developer Console, free to use: https://console.paylabo.dev
This project is under active development. Feedback and issues welcome via GitHub Issues.
- Payment Intents – create and track lifecycle.
- Payments – simulate
authorised,declined,captured, and more. - Webhooks – register endpoints to receive transaction events in real time.
- API Keys – free tier, no signup required.
- Idempotency Key Support – prevents duplicate PaymentIntents or Payments on retries (just like real PSPs).
- Configurable Webhooks — simulates real PSP quirks with per-event webhook settings (custom delay and repeat delivery for each transaction event type).