MortgageGuidelines API

Rate Limits

Understand per-key request and token limits.

Rate Limits

Public API keys can be configured with per-key request and token limits.

What happens on limit exhaustion

When a configured limit is exceeded, the API returns 429 rate_limited.

Operational guidance

  • Treat 429 responses as retryable after backoff
  • Use idempotency keys on supported POST requests before retrying
  • Monitor token usage through response metadata and key administration tooling