Does this support GraphQL queries?

Yes. You can send GraphQL queries or mutations by selecting POST and providing a query body.

Can I add headers or authentication?

Yes. You can add any custom headers and choose authentication options like Bearer tokens, Basic Auth, or API keys.

Is my request data stored?

No. All requests are executed locally in your browser. Data is never stored on our servers.

Toolzium

API Tester

Build requests, send, inspect responses — all in your browser.

Request

Configure method, URL, params, headers, auth, and body.

Method

Query Params

Headers

Auth

Body

Timeout (ms)

Follow redirects

Response

Status, time, size, headers and body preview.

— — —

Headers

—

Body

Presets

Save and reuse frequent requests.

No presets yet. Click Save Preset to store the current request.

History

Recent requests (stored locally).

No history yet.

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