Nodes

A workflow is a graph of nodes. Each node takes inputs, does one thing, and publishes named outputs that later nodes can reference.

Only connected nodes run. Anything left unattached on the canvas is skipped. The graph is sorted into execution order before the run starts, so a cycle is rejected rather than run forever.

Referencing earlier outputs

Any text field can pull in an earlier node's output with a {{ }} placeholder. The placeholder body is a path whose first segment is the node id:

{{ nodeId.title }}
{{ nodeId.matches[0].selector }}

Rules worth knowing:

A missing node, a missing key, or a null value becomes an empty string. Nothing throws.
Objects and arrays are inserted as JSON.
The same function powers the editor's preview and the runner, so what you see while editing is what the run substitutes.

Node reference

Start

The entry point. A trigger node with no inputs and no outputs — it marks where the run begins.

Open URL

Navigates the session to a page.

Input	Required	Notes
URL	Yes	For example `https://youtube.com`
Description	No	Free text describing the page

Output	Meaning
`url`	The URL that was opened
`title`	The page title

Act

Performs one action on the current page, described in natural language.

Input	Required	Notes
Instruction	Yes	For example `Click the sign in button`

Output	Meaning
`success`	Whether the action was performed
`message`	What happened
`url`	The URL after the action

Keep instructions atomic. Click the sign in button works; Sign in and then go to settings is two nodes.

Extract

Pulls structured data off the current page.

Input	Required	Notes
Instruction	Yes	For example `Extract the price of the first listing`

Output	Meaning
`result`	The extracted value

Observe

Finds candidate elements on the page without acting on them. Useful when you want to inspect what is available before deciding what to do.

Input	Required	Notes
Instruction	Yes	For example `Find the pagination links`

Output	Meaning
`matches`	Every candidate that was found
`matches[0].selector`	The first match's selector
`matches[0].description`	The first match's description

Agent

Runs a multi-step goal autonomously instead of one action at a time.

Input	Required	Notes
Instruction	Yes	For example `Log in with username admin and password 123, then go to the profile page`

Output	Meaning
`success`	Whether the goal was reached
`message`	What the agent did
`completed`	Whether the agent finished its plan

This node is marked as requiring a paid plan. On the hosted deployment that means an active subscription; self-hosted installations are unrestricted.

Send Email

Sends an email through Resend. Requires RESEND_API_KEY.

Input	Required	Notes
To	Yes	Recipient address
Subject	Yes	Email subject
Body	Yes	Email body

Output	Meaning
`emailId`	The id Resend assigned to the message

All three fields interpolate, so a run can email its own results:

Subject: Run finished for {{ n1.title }}
Body: Extracted {{ n3.result }}

Adding your own node

See the architecture overview for the three files a new node type touches.