A single network timeout between your Lambda and your payment processor, with no idempotency key design, produces two charges. That's a refund, a customer complaint, potential chargeback exposure, and a PCI incident. Design idempotency into your payment flows before you go live — not as a post-incident remediation.
The specific outcomes this tool produces — and the problems it prevents.
Key composition patterns that survive Lambda cold starts, Step Functions execution resumptions, and processor retries — not just happy-path requests. A timestamp-based key fails the moment an agent retries from a new execution context.
Open/closed/half-open state machines configured with the right failure thresholds and recovery probes for payment workloads. A circuit breaker that opens too late has already passed the failure to your processor relationship.
Exponential backoff with decorrelated jitter means retries don't synchronise into a thundering herd that causes the same downstream failure at higher volume. Without jitter, a retry storm is worse than the original fault.
Export YAML or JSON ready for direct deployment in Lambda handlers, Step Functions state machines, or API Gateway integrations. The design and the production configuration are the same document.
Structured inputs. Immediate output. No setup, no waiting, no consultant required.
Select your payment action types
Choose the operations that need idempotency protection — create payment, refund, payout, or webhook. Each action type gets its own key strategy.
Design your idempotency key strategy
Define key composition, storage backend (DynamoDB), and TTL for each action type. Verify the key is deterministically derivable from task context, not execution-time state.
Configure circuit breakers
Set failure thresholds, timeout windows, and half-open recovery behaviour per downstream dependency — processor API, database, secrets manager.
Build retry policies
Set base delay, maximum attempts, backoff multiplier, and jitter strategy. Model the retry behaviour under concurrent failure to verify it doesn't create a thundering herd.
Export your configuration
Download as YAML or JSON ready for production deployment. Includes DynamoDB schema for the idempotency key store.
Available on Scope and above. Export production-ready configs with Sync.