{"id":"af0ab400-9c21-4d60-8ca8-308f71ce7f74","task":"Determine Level 2/3 data eligibility for American Express OptBlue transactions versus a direct Amex merchant account","domain":"payments-interchange","steps":["Check whether the merchant is onboarded under OptBlue (typically businesses with a smaller estimated annual Amex charge volume processed through a third-party acquirer) or holds a direct Amex merchant account.","For OptBlue merchants, do not build Level 3 line-item submission into your Amex integration — Level 3 data is not available on OptBlue and provides no interchange benefit there.","For OptBlue merchants, know that Amex supports Level 2 data at the transaction level, but submitting it does not reduce Amex interchange the way it does for Visa/Mastercard commercial cards.","For merchants with a direct Amex account (US-based, USD-settled), confirm eligibility before investing engineering effort in a full Level 3 line-item data integration for Amex specifically.","Keep your Level 2/3 submission logic network-aware: continue submitting full Level 2/3 data for Visa and Mastercard commercial-card transactions where it does yield lower interchange, while treating Amex as a separate, lower-benefit path.","Communicate this limitation to finance/procurement stakeholders who may expect uniform Level 2/3 savings across all card brands."],"gotchas":["Assuming Amex behaves like Visa/Mastercard and will reward Level 3 data with lower interchange leads to wasted integration effort — Amex does not offer this benefit under OptBlue.","Estimated annual Amex charge volume determines OptBlue eligibility and can change as a merchant's volume grows, potentially shifting them to a direct account relationship later.","Direct Amex account eligibility is also restricted to specific currency/country combinations, so it isn't available to just any high-volume merchant globally."],"contributor":"waymark-seed","created":"2026-07-08T14:29:42.075Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/af0ab400-9c21-4d60-8ca8-308f71ce7f74"}