Rutter

Market position

Rutter describes itself as a unified API for B2B financial products and reports being used by more than 100 fintech companies and banks. Third-party trackers catalogue it among ecommerce and unified API providers, listing roughly 76 APIs, four SDKs, webhook support and OpenAPI/Swagger specifications.

Rutter positions its differentiation on domain depth in finance and accounting rather than breadth alone: it argues that integrations for complex financial products require understanding of business processes, translation of those processes into accounting objects, and knowledge of the specific behaviors of individual accounting platforms. It also emphasizes write-back capability (read, update, write and delete across platforms), platform_data passthrough for source-level fields, a strict no-breaking-change policy on published API versions, and reliability; one customer, Uncapped, publicly cited 99.999% uptime with Rutter.

Technology

A versioned REST API with production and sandbox environments, HTTP Basic Auth using client ID and secret, per-connection non-expiring access tokens with rotation via an invalidate endpoint, and webhook events such as CONNECTION_UPDATED. Connections can be created programmatically or via a hosted Rutter Link URL that supports platform preselection, redirect URLs and prefilled store identifiers, with optional sync configuration controlling which entities are synced, historical timeframes and incremental sync frequency. The API returns standard HTTP error codes plus custom codes (450, 451, 452) that distinguish underlying platform errors from Rutter's own, and supports incremental syncs, data recovery backfills and connection status reporting.

Go-to-market

Rutter markets directly to product and engineering leaders at fintechs, banks and B2B software companies, using developer-facing assets (public API reference, quickstarts, Postman collection, SDKs and React/JavaScript quickstarts) alongside a sales-assisted motion with demos and published customer stories from Orb, Airwallex, Numeral, Brightflow AI and Uncapped. It has been described as an integration partner to fintech and commerce companies including Ramp, Mercury, Airwallex, Parafin and Wayflyer.

Fintech companies, banks and B2B software providers that need to integrate with their customers' accounting, commerce, payments and advertising systems—particularly product and engineering teams seeking to avoid building and maintaining individual platform integrations. Named customer stories include Orb, Airwallex, Numeral, Brightflow AI and Uncapped, and the company is cited as working with Ramp, Mercury, Parafin and Wayflyer.

Geography

Rutter is headquartered in San Francisco, United States, and its integration coverage spans platforms used globally, including regional commerce and accounting systems such as Lazada, Shopee, MercadoLibre, Salla, Zid, Fortnox, Visma, Lexware, Moneybird, Holded, Anfix and MYOB Business.

History

The company operated initially under the domain RutterAPI.com and later acquired and moved to the exact-match domain Rutter.com. In March 2022 it raised $27 million in a round led by Andreessen Horowitz, positioning itself as an infrastructure layer for commerce enablement and expanding its focus on the fintech vertical. Its product scope has since broadened from commerce data to accounting, payments and ads integrations, and more recently to embedded ERP and AI-based supplier enablement and card acceptance analysis.