API Flow Testing

API flow testing lets you build multi-step API tests on a visual canvas. Connect blocks, pass data between requests, and see results in real-time.

Why API flows?

Real API workflows aren’t single requests. It’s: create a user → verify email → get auth token → create data → verify it saved. Each request depends on the one before it. TestBrick lets you build these flows visually — no code, no scripting.

Core concepts

Concept	Description
Blocks	Individual steps in your flow — API requests, email blocks, or delays
Canvas	The visual workspace where you arrange and connect blocks
Edges	Lines connecting blocks that show data flow
Side panel	Click any block to configure it — set URL, headers, body, auth, assertions
Environments	Reusable variables (baseUrl, apiKey) that you switch between
Data mapping	Reference data from previous blocks using `{{variables}}`

Block types

API Request

Make HTTP requests — GET, POST, PUT, PATCH, DELETE. Configure headers, body, auth, and assertions.

Email

Wait for emails, extract OTP codes or verification links, and assert email content. Pro feature.

Delay

Pause the flow for a specified number of seconds. Useful for rate-limited APIs.

Example flow

A typical OTP verification flow:

[POST /auth/login]          → Send login request, triggers OTP email
        ↓
[Email Block]               → Wait for email, extract 6-digit OTP
        ↓
[POST /auth/verify-otp]     → Verify OTP using extracted code
        ↓
[GET /profile]              → Fetch profile using auth token
        ↓
[PATCH /profile]            → Update profile data

Each block passes data to the next — the OTP from the email block flows into the verify request, the auth token flows into profile requests.

Getting Started

API Flow Testing

UI Testing

Bug Reports

Account & Billing

API Flow Testing

API Flow Testing

Why API flows?

Core concepts

Block types

API Request

Email

Delay

Example flow

​API Flow Testing

​Why API flows?

​Core concepts

​Block types

API Request

Email

Delay

​Example flow

API Flow Testing

Why API flows?

Core concepts

Block types

Example flow