No. Legacy acquirer or Feedzai-style rulesets typically collapse into a handful of repeating patterns – velocity, positive and negative lists, geographic and BIN mismatch, IP and email intelligence, fraud-history linkage, and behavioural or ML scoring. Roughly the large majority map directly onto Specter local rules, and only the behavioural or ML minority needs a backend.

Rulesets are versioned and move through a DRAFT to ACTIVE lifecycle with rollback, so you review a diff and activate rather than filing a change request with your acquirer. Pruning a dead rule becomes trivial and safe.

→ See how rulesets migrate to Specter