Live field data

Dynamic dropdown forms powered by webhooks

Create forms whose dropdowns load live options from n8n, ConnectWise, CIPP, NinjaOne, HaloPSA, Hudu, ITGlue, or any API that returns JSON.

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Direct answer

FormNode lets any select field load options from a webhook or REST endpoint in real time. That makes it useful for forms where the right answer depends on a customer, tenant, device, license, site, ticket, user, or other source-system record.

Webhook-nativeAny field can call your endpoint and consume returned JSON.
CascadingChild fields reload when parent values change.
Source IDsPayloads can preserve IDs, labels, and organization context for downstream automation.
Use this when

The form is part of the workflow, not just the front door.

  • A customer selection should filter the next dropdown to that customer's sites, users, tickets, or assets.
  • The options change often enough that static form choices become stale.
  • The form should validate against a source system before submission.
  • The workflow needs both the human-readable label and the source-system ID.
Workflow pattern
Choose the fieldTurn a select field into a dynamic dropdown.
Add the webhook URLPoint it at n8n, Make, Zapier, Power Automate, or a custom API.
Map response valuesUse auto-detected labels and values or configure the mapping explicitly.
Chain the fieldsPass the selected customer, tenant, or site into the next webhook call.
Concrete workflow example

Customer-to-site cascading dropdown

A ticket intake form should let a requester pick a customer, then show only that customer's ConnectWise sites and contacts in the next fields.

The submission stores both the visible label and source-system IDs, so the workflow creates the ticket against the right company and site.

What the page proves
FieldsCustomer, Site, Contact, Priority, Request details
Systemsn8n, ConnectWise, HaloPSA, Internal APIs
Comparison

Why a workflow-first form layer matters

CriteriaGeneric formsFormNode
Option freshnessManually maintained listsOptions load live from the source system
Cascading fieldsOften custom codeBuilt into the form model
Workflow payloadLabel only or brittle hidden fieldsStructured values with IDs and context
ValidationAfter submissionDuring form fill and again at submit time where configured
Common questions

What is a dynamic dropdown form?

A dynamic dropdown form loads options from another system instead of hard-coding them in the form builder. In FormNode, those options can come from any webhook or REST endpoint that returns JSON.

What is an n8n dynamic dropdown form?

An n8n dynamic dropdown form is a form where dropdown options load from an n8n webhook while the user fills out the form. FormNode handles the field UI and parsing; n8n returns customer-specific options from the systems it can reach.

Can dynamic dropdowns cascade from one field to another?

Yes. FormNode supports cascading fields, so a selected customer can filter the next dropdown to only that customer's users, sites, devices, or tickets.

Related FormNode pages