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AI-Powered API Test Generation

API Spec Driven.
Multiple Output Test Frameworks.

Transform your API specs into comprehensive test suites across 6 frameworks —
with authentication scaffolding, test data generation, and load testing built in.

Customers Adopting Generative AI Driven Testing and Development

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Keep building the same way... using the same DevOps tools you love!
The Roost platform takes care of the complex parts of testing and deploying changes.

 

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4

Spec Formats

6

Test Frameworks

10

AI Providers

Auth

Built-In

Four Steps. Complete API Coverage.

From spec to comprehensive test suite, fully automated.

1
Import

Upload Swagger, Postman, RAML, or Protocol Buffer specs.

2
Parse

AI analyzes endpoints, schemas, auth flows, and data models.

3
Generate

Complete test suites across your chosen frameworks.

4
Execute

Run tests, validate responses, and generate reports.

Any Spec In. Any Test Out.

RoostGPT maps spec formats to framework-native test output, from BDD tests to load testing scenarios.

  • Swagger / OpenAPI
  • Postman Collection
  • RAML
  • Protocol Buffers
Swagger / OpenAPI
Full endpoint discovery with schema validation.
Karate BDD
BDD-style API tests with built-in assertions REST-Assured
Java-based fluent API testing pytest API
BDD-style API tests with built-in assertions Postman/Newman
Collection runner with CI/CD integration Artillery Load
Load testing with virtual user scenarios Playwright API
API testing with browser context support
Postman Collection
Import existing requests with environment variables.
REST-Assured
Java-based fluent API testing pytest API
Python requests-based test suites Postman/Newman
Collection runner with CI/CD integration Playwright API
API testing with browser context support
RAML
RESTful API Modeling Language support.
Karate BDD
BDD-style API tests with built-in assertions REST-Assured
Java-based fluent API testing pytest API
Python requests-based test suites
Protocol Buffers
gRPC service definitions and message types.
REST-Assured
Java-based fluent API testing pytest API
Python requests-based test suites Artillery Load
Load testing with virtual user scenarios

Six Frameworks. Your Choice.

Framework-native tests
from one API spec.

From BDD-style Karate to Artillery load testing, every test is generated in the framework your team prefers.

Framework-Native Output

Generate Karate BDD, REST-Assured, pytest, Postman, Artillery, and Playwright tests.

Full Test Structure

Auth scaffolding, test data, assertions, and error scenarios are included.

One Spec, Many Outputs

Generate tests for multiple frameworks from a single API specification.

Every Auth Method.
Handled.

Generated tests include complete authentication scaffolding for every method your API supports.

OAuth 2.0
Bearer Token
API Key
Basic Auth
Close Open OAuth 2.0

OAuth 2.0

Authorization code flow support with token request and bearer header setup.

 
OAuth-2.0
Close Open Bearer Token

Bearer Token

Reusable token fixtures and authorization headers for protected endpoints.

 
Bearer-Token
Close Open API Key

API Key

Header, query, or environment-driven API key injection.

 
API-Key
Close Open Basic Auth

Basic Auth

Credential setup for simple username and password protected APIs. exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

 
Basic-Auth

Smart Test Data.
Automatically.

AI generates valid, boundary, and invalid test parameters from your schema definitions.

Field Type Valid
 Boundary
 Invalid
name string  "Alice Smith"
 "A" ""
email string "alice@test.com" "a@b.co" "not-an-email" 
age number 25 0 -1
role enum "admin" "guest" "superadmin"
password string "SecureP@ss1" "Ab1!" ""

Integrations & Deployment.

Drop into your existing stack with zero friction.

Pipeline-Native

Pipeline
Native

Runs headless in any CI pipeline. Exit codes, JUnit output, and artifact uploads work out of the box.

your-ai

Your AI.
Your Choice.

Switch between OpenAI, Azure, Gemini, and Bedrock with a single env var. No code changes needed.

one-bianary

One Binary.
Every Platform.

A single binary runs on macOS, Linux, and Windows. Docker images and proxy/SSL support included.

The Old Way vs. The New Way.

See what changes when API testing is fully automated.

Category Traditional  API Test Generator
Test Creation ✖ Weeks of manual writing ✔ Minutes — fully automated
Auth Handling ✖ Custom scripting per method ✔ Built-in — OAuth, Bearer, API Key, Basic
Test Data ✖ Hand-crafted fixtures ✔ AI-generated — valid, boundary, invalid
Load Testing ✖ Separate tool, separate config ✔ Artillery scenarios generated from spec
Mock Servers ✖ Manual mock setup ✔ Auto-generated from schema definitions
Spec Coverage ✖ Partial, based on tester knowledge ✔ Complete — every endpoint, every method
Framework Choice ✖ Locked to one framework ✔ 6 frameworks from a single spec
CI/CD ✖ Custom scripting required ✔ Native — headless, Docker-ready
Maintenance ✖ Constant manual updates ✔ Regenerate from updated spec
 Cost Visibility   ✖ Unknown AI spend ✔ Full tracking per-phase, per-provider

Complete API Testing, Automated.

Everything you need for comprehensive, production-grade API test automation.

Category  RoostGPT
✔ Swagger / OpenAPI spec parsing ✔ Playwright API test generation
✔ Auth HandlingPostman Collection import ✔ OAuth 2.0 / Bearer / API Key scaffolding
✔ Test DataRAML spec support ✔ Smart test data generation
✔ Protocol Buffer / gRPC support ✔ Boundary value & negative testing
✔ Karate BDD test generation ✔ Response schema validation
✔ REST-Assured test generation ✔ CI/CD pipeline integration
✔ pytest API test generation ✔ Docker deployment
✔ Postman/Newman collection output ✔ Cross-platform (macOS, Linux, Windows)
✔ Artillery load test generation ✔ Full AI cost tracking & reporting

Transform Your API
Specs into Tests.

Your API tests are one command away.

$ roostgpt api-test --spec openapi.yaml

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