Webhook Triggers in AACFlow: Connect Any External Service to Your AI Workflows

Unique per workflow. Each workflow gets its own endpoint. You can have a Stripe webhook on one workflow, a Typeform webhook on another, and a custom internal app webhook on a third — all isolated, all independently manageable.

Optional HMAC signature verification. For any service that supports webhook signing (Stripe, GitHub, Shopify, and most modern platforms do), you can configure a shared secret in AACFlow. The platform will verify the X-Hub-Signature or equivalent header on every incoming request and reject anything that doesn't match. This closes the door to spoofed payloads.

How to Set Up a Webhook Trigger

Setup takes about 60 seconds:

1. Open a workflow in AACFlow and add a Webhook Trigger block as the first block.
2. AACFlow generates your unique endpoint URL immediately — copy it.
3. Paste the URL into your external service's webhook configuration (Stripe Dashboard → Developers → Webhooks, GitHub → Settings → Webhooks, etc.).
4. Optionally, set a webhook secret in AACFlow to match the one you configure in the external service.
5. Send a test event from the external service. AACFlow shows the incoming payload in the execution log instantly.

From that point on, every matching event in the external service fires your workflow in real time.

Routing Events with Conditions

Most services send multiple event types to the same webhook URL. Stripe sends payment_intent.succeeded, payment_intent.payment_failed, customer.subscription.created, invoice.paid, and dozens more — all to one endpoint. Your workflow needs to handle them differently.

The idiomatic AACFlow pattern is:

Webhook Trigger → Condition Block → branching paths

A Condition block reads a field from trigger.body — typically something like trigger.body.type or trigger.body.event — and routes execution down different branches. You can chain multiple Condition blocks to build arbitrarily complex routing logic. Each branch then runs whatever blocks make sense for that event type: an AI block, a database write, a notification, an email.

This keeps a single workflow clean and maintainable rather than forcing you to create one workflow per event type.

Real-World Webhook Automation Examples

Stripe payment processing with AI-generated invoices

A Stripe payment_intent.succeeded event fires the webhook. The workflow reads the customer ID and payment amount from trigger.body.data.object, uses an AI block to generate a formatted invoice in the customer's preferred language, and sends it via Gmail. The whole chain runs in under three seconds.

Typeform submission analysis

A Typeform submission hits the webhook with all form answers in trigger.body.form_response.answers. An AI block analyzes sentiment, extracts key data points, and creates a structured Notion page with the findings. Marketing teams get enriched leads rather than raw form dumps.

Custom application events

Your own backend can fire webhook events just as easily. An internal app posts a JSON body to the AACFlow endpoint when a user upgrades their plan. The workflow reads trigger.body.user_id and trigger.body.new_plan, updates a CRM record, sends a Slack notification to the success team, and triggers an onboarding email sequence — all automatically.

Polling vs. Webhooks: When to Use Each

AACFlow supports both models. Webhooks are the right choice when the external service can push events in real time. They're lower latency, more efficient, and don't require AACFlow to repeatedly poll an API. Use them whenever the service supports them.

Polling triggers — where AACFlow checks a service on a schedule — are the right choice for services that don't support webhooks: legacy APIs, RSS feeds, IMAP email inboxes, or any system where you control neither the event emission nor the delivery mechanism.

For most modern SaaS services, webhooks are available and preferred. AACFlow's 41+ native trigger services are pre-configured with the right event schemas, signature verification methods, and retry logic for their respective platforms. The generic webhook trigger handles everything else.

Conclusion

The AACFlow generic webhook trigger is the universal adapter for AI workflow automation. If a service can make an HTTP POST request, it's a valid workflow trigger — full stop. Combine that with Condition-based routing, HMAC verification, and access to 300+ downstream tools, and you can automate almost any event-driven process across your entire software stack.

Set up your first webhook trigger in AACFlow today. The endpoint URL is waiting.