Verify end-to-end merchant onboarding workflows, not just 200 OK

Verify end-to-end merchant onboarding workflows, not just 200 OK targets a $3.6B = 120,000 platforms and mid-market sellers x $30K ACV. Rationale: target buyers are platform and mid-market engineering orgs integrating payments and onboarding merchants; a realistic annual subscription and services package could be $10K-50K, here we model $30K ACV. total addressable market with medium saturation and a year-over-year growth rate of 10-18% across API testing and observability markets, driven by more event-driven architectures and embedded finance..

Key trends driving demand: API-first payments -- more platforms integrate payment providers, increasing asynchronous failure surface; Event-driven architecture adoption -- more webhooks and async flows that need lifecycle testing; Shift to embedded finance and marketplaces -- faster merchant onboarding increases demand for reliable integration verification.