Affirm Financing for Shopify is a build-to-order integration that brings transparent, longer-term monthly financing to high-ticket US storefronts — the furniture, electronics, fitness equipment, and appliance carts where a $1,800 sticker price stalls the buy button. This is not an instant App Store download. ECOSIRE configures your Affirm merchant account, wires it into your live Shopify theme, and hands you a tested, supported install.

What we actually build: Affirm pre-qualification messaging ("As low as $62/mo") rendered on product, collection, and cart pages via theme app blocks and the Affirm.js promotional API, with monthly plans up to 36 months surfaced honestly — real APR ranges, no buyer-side hidden fees, and the buyer's exact monthly figure pulled from Affirm's price-driven messaging. At checkout, Affirm appears as an additional payment method; you are settled upfront in full while Affirm carries the repayment risk.

We integrate against the Shopify Admin GraphQL API for product and price metadata, write financing-eligibility flags to metafields, register webhooks (orders/create, orders/paid, refunds/create) so financed orders reconcile cleanly, and respect multi-location inventory so financed orders draw from the correct fulfillment location. OAuth scopes are kept least-privilege.

Because every storefront's theme, price tiers, and merchant terms differ, we scope eligibility rules (cart thresholds, excluded SKUs), match the messaging to your brand typography, and verify the full path in a development store before going live. You receive the source, documentation, and a defined support window. Affirm's own underwriting, APRs, and consumer terms are governed by Affirm — we build the storefront integration around them, honestly.