ComposalAPI and performance testing
Composal vs Karate
Karate is a programmable framework for service-level checks and automation.
Two workflows, side by side
Composal
Composal sends AI browser agents to use your running web app and check the outcomes you care about. Define journeys as plain-English Scenarios, map existing flows with Discovery, or explore for bugs with Deep Scan. Runs keep recordings and reproduction steps so your team or coding agent can investigate a Finding.
Verify documentation →Karate
Code-based API test automation and service tooling
Karate is a framework for API testing with a readable feature-file syntax, request construction, response assertions, data-driven scenarios, and parallel execution.
What each tool does
“With setup” means you supply code or configuration. “Not confirmed” means support for this workflow needs checking with the vendor.
| Workflow | Composal | Karate |
|---|---|---|
| Run browser journeys | Yes Run saved browser Scenarios and return recordings and reproducible Findings. | Yes Karate UI Testing provides browser automation in addition to API tests. |
| Map application workflows | Yes Discovery maps key application areas and user journeys. | Not confirmed Check whether this product includes this workflow in your intended plan and setup. |
| Explore for unexpected issues | Yes Deep Scan explores the running application and reports reproducible issues. | Not confirmed Check whether this product includes this workflow in your intended plan and setup. |
| Describe checks in plain English | Yes Author Scenarios around the intended user outcome, then review the steps and expected results. | With setup Define steps and assertions in structured feature files. |
| Run or inspect from a terminal | Yes Use the CLI to start and inspect verification runs and their Findings. | Yes Execute Karate tests from its command-line runner. |
| API and protocol testing | No Use a dedicated tool for this specialist workflow alongside Composal’s browser verification. | Yes Karate is a framework for API testing with a readable feature-file syntax, request construction, response assertions, data-driven scenarios, and parallel execution. |
Where each fits
Choose Karate when API tests need code-level control, readable scenarios, reusable features, or integration into an existing JVM/CI setup.
Try this evaluation
Model one checkout or approval flow in Karate with response and authorization assertions, then define the matching web outcome in Composal. Introduce an API contract defect and a frontend state defect separately.
- Coverage
- Which user outcomes must this release prove, and which specialist checks must stay in your existing stack?
- Setup
- Who prepares accounts, test data, permissions and access to the deployment being tested?
- Evidence
- Can the engineer reproduce a reported failure from the recording and steps, without asking the tester to investigate again?
- Ownership
- Who updates the checks when the product changes, and can the team review what a passing result actually proves?