API testing · updated 2026-10-05

API testing studio

REST, GraphQL, gRPC, SOAP and WebSocket in one studio, with environments, chaining, assertions, a mock server, Postman imports and microsecond timing.

For: Backend and QA engineers who test APIs, and teams consolidating an API client, a mock server and a contract check into one place.

Start free Book a demo on your own flow

Capabilities

Five protocols, one studio

REST, GraphQL with schema-driven autocomplete, gRPC unary and server-streaming calls, SOAP from a WSDL, and WebSocket.

Environments and chaining

Variables per environment, values extracted from one response and used in the next, and assertions on status, headers, body and schema.

Mock server

Serve responses you define from the same collections you test, so a front end can be tested against the error it cannot otherwise get.

Microsecond timing

Response times measured at microsecond precision, so a regression of a few hundred microseconds is visible rather than rounded away.

Imports from the tools you have

Postman, Insomnia, Bruno and Hoppscotch collections, OpenAPI specifications and HAR captures, with a per-item migration report.

Runs in the pipeline

Collections run from CI with a quality gate you define; results flow back to the pipeline.

Import or build a collectionBring a Postman collection or an OpenAPI file, or start from a blank request.
Set environmentsStaging and production as variable sets; secrets live in the credential vault.
Chain and assertExtract a token from one response, use it in the next, assert on the shape of the result.
Run, mock, gateRun the collection, serve mocks to the front end, and fail the pipeline on a broken contract.

What you receive, and what we do not do

Evidence ledger

Per request: Status, headers, body, timing to the microsecond, and each assertion’s result.
Per run: Pass or fail per request and per collection, exportable.
Per import: A report of what migrated cleanly and what needs review; nothing silently dropped.

Limits we state

Contract-testing “can I deploy” verdicts and the live MQTT display are not available in this build; the product labels them so.
Timing is measured from the platform’s servers in Mumbai, not from your users’ locations.

Plans: Every plan. Free includes 1,000 API test calls a month; Solo Pro 50,000; Team 250,000, pooled; Enterprise unlimited. See the metering table.

Go deeper

Questions buyers ask

Can I import my Postman collections?

Yes. The Migration Setup tool imports Postman, Bruno, Insomnia and Hoppscotch collections and maps them into the studio with a per-item report of what migrated cleanly and what needs review.

Does it support GraphQL and gRPC properly?

GraphQL is introspection-driven: the studio reads the schema and autocompletes queries, variables and mutations. gRPC performs unary and server-streaming calls from a .proto you register or load by reflection.

Where do secrets go?

In the credential vault, encrypted with AES-256-GCM, referenced from environments by name so a collection never contains a secret in plain text.

Try it on your own application

The Free plan has no time limit and asks for no card. Or bring one flow from your product and we record it live.