Revenue Ops

Invoice-Paid Event Routed Into Onboarding Tasks

When Stripe confirms an invoice is paid, the workflow verifies the event, moves the deal stage, and spins up the onboarding checklist so delivery starts without anyone watching the payments dashboard.

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3 to 6 days
build time
4
outcomes
5
stack tools
6
build steps

Built with real HMX tool paths

SStripe Webhooks
nn8n
GGoHighLevel
PPostgres (idempotency keys)
SSlack
SStripe Webhooks
nn8n
GGoHighLevel
PPostgres (idempotency keys)
SSlack

Outcome signals

These are the real outcome statements attached to this HMX case study.

Minutes
paid-to-onboarding instead of waiting for someone to notice
Idempotent
retried Stripe events never create duplicate task lists
Verified
signature-checked events only, no spoofed triggers
Reconciled
unmatched payments held for a human, not dropped

Case architecture

Invoice-Paid Event Routed Into Architecture

6 nodes
Subscribe a webhook endpoint
Check the Stripe event ID
Stripe Webhooks
n8n
Exception Path
Completed Workflow
  1. 01Subscribe a webhook endpoint

    When Stripe confirms an invoice is paid, the workflow verifies the event, moves the deal stage, and spins up the onboarding checklist so delivery s...

  2. 02Check the Stripe event ID

    Check the Stripe event ID against a processed-events table; skip if already handled

  3. 03Stripe Webhooks

    Stripe Webhooks carries Invoice-Paid Event Routed Into through validated triggers, branches, writebacks, and exception paths.

  4. 04n8n

    Match the customer to a CRM opportunity by email or stored Stripe customer ID

  5. 05Exception Path

    When automation confidence is low, route the record to a manual owner with the source, stage, and last action attached.

  6. 06Completed Workflow

    Minutes paid-to-onboarding instead of waiting for someone to notice; Idempotent retried Stripe events never create duplicate task lists; Verified s...

Problem

The operating gap

Payment happens in Stripe, the CRM has no idea, and onboarding only begins once someone notices the money landed and manually creates tasks. That gap between 'paid' and 'kickoff' is dead time, and duplicate or out-of-order webhook deliveries can trigger onboarding twice.

Build

What gets built

A Stripe webhook listening for invoice.paid is signature-verified and processed idempotently by event ID so a retried delivery never double-fires. On a first-seen event the workflow advances the CRM opportunity to a 'Paid / Onboarding' stage and generates a templated onboarding task list with owners and due dates, then notifies the delivery channel. If the customer or deal can't be matched, the event parks in a hold state for a human to reconcile rather than guessing.

Build steps

Invoice-Paid Event Routed Into Onboarding Tasks uses an event-driven automation layer for AI Automation. When Stripe confirms an invoice is paid, the workflow verifies the event, moves the deal stage, and spins up the onboarding checklist so delivery s... The architecture connects subscribe a webhook endpoint, stripe webhooks, n8n, and completed workflow with an explicit control path.

  1. 01Subscribe a webhook endpoint to the Stripe invoice.paid event and verify the signature
  2. 02Check the Stripe event ID against a processed-events table; skip if already handled
  3. 03Match the customer to a CRM opportunity by email or stored Stripe customer ID
  4. 04Advance the deal stage and create the templated onboarding task list with owners
  5. 05Post a kickoff notification to the delivery channel with the client and package
  6. 06Park unmatched events in a hold queue for manual reconciliation

Stack

Tools and layers

  • Stripe Webhooks
  • n8n
  • GoHighLevel
  • Postgres (idempotency keys)
  • Slack
  • Event layer: Subscribe a webhook endpoint to the Stripe invoice.paid event and verify the signature
  • Validation layer: Check the Stripe event ID against a processed-events table; skip if already handled
  • Branching layer: Stripe Webhooks carries Invoice-Paid Event Routed Into through validated triggers, branches, writebacks, and exception paths.
  • Writeback layer: n8n handles routine steps while a Stripe webhook listening for invoice.paid is signature-verified and processed idempotently by event ID so a retried delivery never double-fires.
  • Exception layer: Minutes paid-to-onboarding instead of waiting for someone to notice; Idempotent retried Stripe events never create duplicate task lists; Verified s...

Data flow

  1. 01Subscribe a webhook endpoint to the Stripe invoice.paid event and verify the signature
  2. 02Check the Stripe event ID against a processed-events table; skip if already handled
  3. 03Match the customer to a CRM opportunity by email or stored Stripe customer ID
  4. 04Advance the deal stage and create the templated onboarding task list with owners
  5. 05Post a kickoff notification to the delivery channel with the client and package
  6. 06Park unmatched events in a hold queue for manual reconciliation

Controls

  • Payment happens in Stripe, the CRM has no idea, and onboarding only begins once someone notices the money landed and manually creates tasks.
  • A Stripe webhook listening for invoice.paid is signature-verified and processed idempotently by event ID so a retried delivery never double-fires.
  • When automation confidence is low, route the record to a manual owner with the source, stage, and last action attached.

Research basis