Projects
Top-level containers that group related channels and tests.
Introduction
Testzilla runs automated tests against your voice AI agents (Retell, VAPI, and more), evaluates the calls, and tracks quality over time. You can drive everything from the web app, the REST API, or an MCP server for AI agents like Claude Code and Cursor.
Core concepts
Section titled “Core concepts”Channels
A connection to an agent under test on a provider (Retell / VAPI), including the phone number and platform config.
Tests
A scenario the AI tester runs against a channel, with a prompt, persona, and pass/fail criteria.
Test Results
The outcome of a run: transcript, recording, evaluation, latency, and pass/fail.
Ways to use Testzilla
Section titled “Ways to use Testzilla”Web app
The full UI at app.testzilla.ai.
REST API
Automate projects, channels, tests, and results.
MCP
Drive Testzilla from an AI agent.
Head to the Quickstart to make your first API call.