AltFiScore for Developers
Welcome to the Docs
Everything you need to integrate AltFiScore credit decisioning into your stack. JSON in, JSON out. Idempotent. Versioned. Built for production from day one.
Start here
Quickstart
Make your first AltFiScore API call in 15 minutes.
API Reference
Endpoint catalog with parameters, responses, and code samples.
Authentication
API keys, key rotation, sandbox vs live environments.
Sandbox
Set up your sandbox tenant with pre-seeded test consumers.
Idempotency
Retry-safe requests using the Idempotency-Key header.
Live Demos
Try BNPL decisions in your browser. Real API. Real responses.
Built for the production constraints you already have.
Idempotency keys keep retries safe. Adverse action codes ship in every declined response, ready for your FCRA-compliant consumer notice flow. PII is redacted in our logs. Webhooks (coming Q3) sign every payload. Our sandbox tenant has pre-seeded test consumers — no scaffolding required.