標頭
已儲存的請求
暫無已儲存的請求
歷史紀錄
尚無請求紀錄
功能與提示
- • 支援所有 HTTP 方法（GET、POST、PUT、DELETE 等）
- • 自訂標頭，支援新增／移除
- • 多種請求主體類型：JSON、表單資料、純文字
- • 即時回應，附語法高亮
- • 附時間戳的請求／回應歷史紀錄
- • 儲存並載入常用請求
- • 回應時間測量
- • 將歷史紀錄匯出為 JSON 備份
暫無已儲存的請求
尚無請求紀錄
Building or debugging an API usually means reaching for a heavyweight desktop client, creating an account, and installing yet another app just to fire off a single GET request. The Online API Tester skips all of that: it's a browser-based REST client for sending GET, POST, PUT, and DELETE requests and inspecting the response the moment it comes back. It's built for the quick, everyday checks developers actually do — confirming an endpoint returns the right JSON, checking that a POST body is validated correctly, or verifying a status code after a backend deploy — without the overhead of a full API platform.
Each request lets you set the HTTP method, target URL, custom headers, and a request body, so you can replicate real-world calls: pass an Authorization header with a bearer token, set Content-Type to application/json, or send form data to a webhook. Once you send the request, the tool displays the response instantly, so you can check status codes, headers, and payload structure in the same view without switching tabs or writing a single line of code. Because it supports all four core HTTP verbs, it covers the typical CRUD cycle — reading a resource, creating one, updating it, and deleting it — using the same interface.
Everything runs client-side in your browser, so there's nothing to install and no account to create before you can test an endpoint. This also makes it a convenient way to double-check an API from any machine — at your desk, on a laptop between meetings, or while reviewing a colleague's endpoint — without depending on locally installed software. Keep in mind that requests are still subject to the target server's CORS policy, so testing an API that hasn't enabled cross-origin requests from a browser may return a CORS error rather than the expected response.
Send a request to any REST API endpoint and inspect the response directly in your browser.
Select GET, POST, PUT, or DELETE depending on the operation you want to test.
Type or paste the full API URL you want to send the request to.
Add any headers the endpoint requires, such as Authorization or Content-Type.
For POST or PUT requests, enter the JSON or form data payload you want to send.
Click send to fire the request from your browser to the target endpoint.
Check the returned status code, headers, and response body displayed instantly on the page.