This template is an HTTP front door for workflows that already live in another engine. A webhook receives list, add, remove, or execute.
JavaScript calls that engine's REST API and keeps a small registry of workflow ids. The webhook response returns JSON. Put the engine base URL and API key in the JavaScript node.
Latenode bills workflow runtime in CPU seconds. The first 10,000 CPU seconds are free each month, then usage follows pay-as-you-go CPU-second pricing. Plug-and-Play (PnP) AI nodes are billed separately—each PnP token is $1 USD, charged pay-as-you-go at vendor cost plus a small processing fee, with no API keys required.
Full pricing — how CPU seconds work →Workflow preview
A webhook accepts operation, workflow ids, and parameters from the client.
A router sends list, add, remove, or execute down separate paths.
Use a JavaScript node to call the external workflow engine REST API with the base URL and API key stored in that node, then read and write the tool registry (Redis over HTTP, or Latenode key-value storage).
The webhook response returns JSON (tools list, execute result, or error).
Add a webhook trigger and a webhook response. This URL is what MCP clients or scripts will call.
Put the workflow engine base URL and API key in the JavaScript node (Latenode Secrets) and call its REST API for list and execute.
Persist ids in JavaScript via Redis REST, or use Latenode key-value storage if you prefer not to run Redis.
Add a router for list, add, remove, and execute. Send each branch into JavaScript, then return JSON with a webhook response.
FAQ
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