Latest: v3.2.0 — March 20, 2026

API Changelog

Every update to the MyCardLiaison API — new features, improvements, fixes, and deprecations.

v3.2.0 New Features March 20, 2026
  • newBatch API now supports up to 1,000 cards per request (up from 100)
  • newReal-time network anomaly sharing between Enterprise customers (anonymised)
  • newfraud_signals array added to all check responses with human-readable signal labels
  • improvedAI fraud model retrained on Q1 2026 data — false positive rate reduced by 18%
  • improvedWebhook retry logic now uses exponential backoff with jitter
v3.1.0 Improvements February 5, 2026
  • newPython SDK v2.0 released with full async/await support
  • newGET /cards/history endpoint now supports cursor-based pagination
  • newWhite-label portal supports custom SMTP configuration for branded emails
  • improvedP99 latency reduced from 220ms to 140ms following edge node upgrades in APAC
  • fixedResolved an issue where Discover cards occasionally returned incorrect expiry dates
v3.0.0 API v3 Launch January 10, 2026
  • newAPI v3 with fully redesigned response schema — cleaner, more consistent field names
  • newai_verified flag on all check responses
  • newcurrency field now returns ISO 4217 code on all networks (was inconsistent in v2)
  • newMulti-tenant reseller API for white-label partners
  • newJavaScript/TypeScript SDK v3 with full type definitions
  • deprecatedAPI v2 enters maintenance-only mode. Sunset date: January 10, 2027
v2.9.0 Improvements November 18, 2025
  • new400 new card networks added — total now 2,000+
  • newWebhook signature verification now uses HMAC-SHA256
  • improvedDashboard analytics now include P50/P95/P99 latency histograms per network
  • fixedFixed rate limiting headers not returning correctly on 429 responses
v2.8.0 Fraud Engine September 3, 2025
  • newFraud score v2 model deployed — trained on 800M additional transactions
  • newgeo_anomaly fraud signal added — flags checks from unexpected geographic origins
  • newConfigurable fraud score threshold rules per API key in dashboard
  • improvedFraud webhook delivery latency reduced from 800ms to under 200ms
Read the Full API Docs →