Build API Tests Visually - No Code Required
LoadGen's visual flow editor lets you design, validate, and debug API workflows with drag-and-drop. 28-node palette with 21 executable nodes today across flow control, request, data, assertion, and Scriban-based transformation categories. Undo/redo, revision history, and run-in-editor with breakpoints.
User Auth Flow
9 nodes · Last run: 2m ago · Passed
Nodes
All Categories
Flow (2)
Request (3)
Auth (3)
Assert (4)
Control (8)
Data (4)
Transform (2)
Subflow (1)
28 total
Start
Flow entry point
Bearer Auth
{{env.api_key}}
GET /api/users
200 · 142 ms
Status = 200
HTTP status check
Extract user.id
$.data[0].id → uid
If user.active
uid != null
POST /api/session
Awaiting…
Latency < 500ms
P95 threshold
End
Flow complete
Extract user.id
$.data[0].id → uid
Properties
expression
output
format
fallback
Execution
21 Executable Nodes Across a 28-Node Palette
Flow control
flow.start, flow.end, and flow.call for reusable flow composition.
Request
Operation (OpenAPI), Raw HTTP, and Replay nodes.
Assert
Status, JSONPath, Schema, Latency, and Contract assertions.
Control
If, Switch, forEach, and Delay.
Data
Set and Variable nodes.
Transform
Scriban-based built-in transformation node.
Context Menu & Canvas Actions
Professional-grade editing tools at your fingertips.
What competitors don't have
"Login VSI, ControlUp, and NeoLoad lack visual API flow editing. LoadGen brings developer-grade API testing to EUC/VDI teams - without writing code."
Design Your First API Flow in Minutes
Import from OpenAPI, drag nodes, connect, run. No scripting required.
