Skip to main content

API Testing

Build endpoint test cases with status codes, response checks, and error scenarios.

Use API Testing

$49.99 / month

Includes every Agent on Ai-GEN. 15,000+ Agents for one monthly price, cancel anytime.

From the creator of GPTs with 8.5M+ chats · 4.2 stars · 37K+ reviews

Start API Testing — $49.99 / month

Your account is created at checkout. After payment, this Agent opens when access is ready.

Already subscribed? Sign in · Account terms

Cancel future renewals from Account & Billing → Subscriptions.

For developers preparing API checks before running them in Postman, a test framework, or a local environment. Get success, validation, and failure cases for a route, with expected status codes and response assertions. Paste a test snippet to spot missing cases or weak checks. Leave with endpoint test cases, a response checklist, and troubleshooting notes you can use while testing.

What it writes

  • Endpoint test cases with expected outcomes
  • Status and response assertion checklist
  • Test snippet gap and failure notes

How to use it

Include the method, route, authentication type without secrets, and expected success and failure behavior. A sample response makes it easier to write precise field and status assertions.

What you bring

  • HTTP method, route, parameters, and headers
  • Expected behavior and sample responses
  • Test framework preference, if applicable
  • Remove credentials and sensitive payloads

A good fit for

  • Turning a new endpoint specification into cases before implementation
  • Checking validation and error responses for a specific API route
  • Reviewing assertion gaps in a pasted API test snippet

Ways to start

A few requests this Agent can handle.

Create tests for POST /v1/orders. A valid order returns 201 with an id and total; missing items should return 400 with an error code.

Review this GET /v1/users test: it checks for status 200 only. The response should include id, email, and role, and email must be valid.

Build success and error checks for PATCH /v1/profile using bearer authentication. A missing displayName should return 422; do not include credentials.

Good to know

This workspace provides text assistance.

  • Running tests against a live or local API
  • Confirming actual endpoint behavior
  • Cannot send requests to your API or execute test code
  • Status codes and assertions depend on your stated expectations

Before you subscribe

What am I buying?

One monthly subscription that opens this Agent and every other Agent on Ai-GEN. Cancel from Account & Billing.

What happens after payment?

Checkout creates or uses your Ai-GEN account. When payment and entitlement are confirmed, the purchased Agent opens. Choose a starter task, add your inputs, and send your first request.

Can I cancel?

Yes. Manage cancellation under Account & Billing → Subscriptions. Review the status and cancellation details shown there before confirming.

Can I use the response in my work?

Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.

Have a question? Contact support
Report This Agent

Tell Ai-GEN about broken behavior, poor performance, misleading capabilities, or a safety concern.