Diagram Template Gallery
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Checkout Request Sequence
Synchronous checkout request sequence across gateway and services. Starter template grounded in the Basic Sequence D2 syntax pattern.
Checkout Request Sequence (Operations)
Synchronous checkout request sequence across gateway and services. Operations variant that adds fraud scoring interactions before final response assembly.
Checkout Request Sequence (Enterprise)
Synchronous checkout request sequence across gateway and services. Enterprise variant that adds status polling and finalization lookups for client confirmation.
Access Policy Alternate Sequence
Access request sequence with allow, deny, and escalation paths. Starter template grounded in the Alternate Path Sequence D2 syntax pattern.
Access Policy Alternate Sequence (Operations)
Access request sequence with allow, deny, and escalation paths. Operations variant that adds manual reviewer branch and request ledger tracking.
Access Policy Alternate Sequence (Enterprise)
Access request sequence with allow, deny, and escalation paths. Enterprise variant that adds appeal loop and outbound notification interactions.
Notification Fan-Out Sequence
Fan-out event dispatch with multi-worker completion acknowledgement. Starter template grounded in the Fan-out Sequence D2 syntax pattern.
Notification Fan-Out Sequence (Operations)
Fan-out event dispatch with multi-worker completion acknowledgement. Operations variant that adds additional worker lane and compliance summary handoff.
Notification Fan-Out Sequence (Enterprise)
Fan-out event dispatch with multi-worker completion acknowledgement. Enterprise variant that adds replay workflow and throughput dashboard publication.
Job Retry Loopback Sequence
Loopback sequence for background job retries and completion signaling. Starter template grounded in the Loopback Sequence D2 syntax pattern.
Job Retry Loopback Sequence (Operations)
Loopback sequence for background job retries and completion signaling. Operations variant that adds circuit-breaker evaluation and attempt tracking.
Job Retry Loopback Sequence (Enterprise)
Loopback sequence for background job retries and completion signaling. Enterprise variant that adds incident bot notifications and service recovery messaging.
Human Approval Handoff
Human-in-the-loop execution handoff with approval controls. Starter template grounded in the Human Approval Gate D2 syntax pattern.
Human Approval Handoff (Operations)
Human-in-the-loop execution handoff with approval controls. Operations variant that adds compliance signoff and evidence return path.
Human Approval Handoff (Enterprise)
Human-in-the-loop execution handoff with approval controls. Enterprise variant that adds change board review and audit pack delivery.
Async Callback Fulfillment
Asynchronous callback lifecycle from acceptance to completion fetch. Starter template grounded in the Async Callback Flow D2 syntax pattern.
Async Callback Fulfillment (Operations)
Asynchronous callback lifecycle from acceptance to completion fetch. Operations variant that adds webhook registration and signature verification flow.
Async Callback Fulfillment (Enterprise)
Asynchronous callback lifecycle from acceptance to completion fetch. Enterprise variant that adds cancellation and restart paths for long-running jobs.