Developer Consistency Suite (DCS)
Events v2 + Replay + Scenario Test Harness
A set of platform primitives that makes Finix integrations predictable, testable, and debuggable across sandbox + production with standardized events, replay capabilities, and deterministic test scenarios.
Target Segments
- Primary: vSaaS platform engineering teamsTeams integrating embedded payments for SMB
- Secondary: Payments ops teamsSupporting platform integrations at scale
Why Now
- • Developer experience is explicitly framed as "ops experience" with opportunity for timelines, reason codes, and replay tools
- • Stripe remains default due to productized integration patterns—Finix must compete on consistency + control + debuggability
- • Checkout has test-mode dispute testing; Braintree emphasizes sandbox parity—Finix can leapfrog with broader scenario harness
Objectives
Improve Developer Velocity
20-40 engineering hours saved per platform integration in first 60 days
Reduce Integration Ops Burden
15-30% fewer "webhook/debug/sandbox mismatch" support tickets
Increase Webhook Reliability
>=95% of pilot platforms achieve >=99% webhook delivery success within 7 days
Improve Testability
Pilot platforms can run end-to-end onboarding + payout scenarios in sandbox without Finix intervention
User Personas
Platform Engineer
Predictable eventing + safe retries
Platform PM
Faster time-to-live for integration and fewer "stuck" launches
Payments Ops
Tools to debug and replay events without engineering escalation
Risk/Compliance
Audit logs and evidence trails for event-driven actions
Functional Requirements
Core capabilities required to deliver on the stated objectives.
Events v2 Standardized Envelope
Pilot event types use same schema with stable fields for onboarding + transfers
GET /events/{id}
Returns exact payload + metadata + delivery attempts
GET /events (list)
Supports ?resource_id=&type=&created_after= with pagination and deterministic ordering
POST /events/{id}/replay
Re-delivers event to registered endpoint; logs results
Webhook Diagnostics
Delivery attempts + last error summary available via API and minimal dashboard UI
Sandbox Scenario Harness (2-3 scenarios)
Generate onboarding + payout + dispute-opened scenarios
CLI Tooling
Trigger scenarios, verify signatures; installable tool with docs + examples
Full Domain Coverage
Expand Events v2 + scenario library to disputes, payouts, verifications, adjustments
Success Metrics
| Metric | Baseline | Target | Change |
|---|---|---|---|
| Integration Time-to-First-Webhook | TBD | Median < 10 minutes | |
| Webhook Delivery Success | TBD | >=99% within 7 days | |
| Support Ticket Deflection | TBD | -15-30% | |
| Replay Usage | N/A | >30% incidents resolved via replay/diagnostics |
Rollout Plan
Discovery + Design
Event taxonomy design; retention/cost analysis; pilot platform workshops
Build MVP
Events v2 for onboarding + Events API + replay + diagnostics + 1 scenario
Pilot
One net-new integration, one high-volume tenant, one complex onboarding (paired with OCE)
Beta + Expansion
Extend to transfers/payouts, add scenarios, diagnostics improvements
GA
Stable and widely available; full domain coverage
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