Wex Health and Benefits APIs

Sections

Pre-Launch Checklist

[ ] Credentials stored in environment variables or a secrets vault — not in source code
[ ] Integrating against different env credentials requested only after sign-off with the API team
[ ] One shared client / configuration instance created at startup (singleton pattern confirmed)
[ ] Error handling covers 401, 403, 404, 408, 429, and 5xx
[ ] Correlation IDs (xRequestId) passed on all calls for end-to-end traceability
[ ] Log level set to Warning or Information in production — never Trace
[ ] No raw Authorization headers, tokens, or participant data written to logs
[ ] SDK / package version pinned and kept up to date