API integration checklist for lending workflows.
A production-minded checklist for connecting applications, assessments, decisions, outcomes, and webhooks to a governed credit decision platform.
A strong integration does more than call an assessment endpoint. It carries identity, consent or authorized basis, product context, decision evidence, outcome events, and operational monitoring.
Start with the workflow, not the endpoint
Most lending integrations fail when they treat credit assessment as one isolated API call. Real workflows include applicant intake, product selection, consent or authorized access basis, document collection, assessment, decision, disbursement, repayment outcomes, and monitoring.
Before implementation, map who sends each event, what identifier is authoritative, what data is required, and which system records the final decision.
Make authentication and tenant boundaries explicit
Every integration should use scoped credentials, tenant-aware access, clear environment separation, and predictable token or API-key rotation. Test accounts should never be mixed with production borrowers.
For browser flows, session cookies and server-side routes should avoid exposing sensitive tokens. For server-to-server flows, credentials should be stored and rotated according to the institution security process.
Close the loop with outcomes
A decision workflow becomes more valuable when it records what happened after review: approval, decline, condition, disbursement, repayment, delinquency, restructure, or closure.
Those events help institutions monitor portfolio behavior, investigate exceptions, and improve their own policy operations over time.