Chrome · Edge · Brave · Arc · Opera

API Inspector — JSON, Network Requests & Media Viewer

Watches the page you are on and lists every API call it makes. Open a JSON response in the viewer, replay a request with your own headers, copy it as cURL, or play any image, audio or video file the page loaded — all inside Coders Hub, with no account or API key.

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Store listings for Chrome, Edge and Firefox are on the way — the unpacked build works today.

What it does

Lists every API call (fetch, XHR, WebSocket) the page makes, with method and status code.
Filter by JSON, documents (XML/HTML/CSV), media or other so the noise disappears.
One click sends each link to the right tool: JSON Viewer, XML Formatter, HTML Viewer or CSV Viewer.
Images open straight in the browser, and anything unknown opens in the browser or the HTTP Request Builder.
Replay any request in the HTTP Request Builder to change headers or body.
Opens detected images straight away, and video, audio or streams in the media player.
Copy any call as a cURL command, or copy the plain URL.
Export the whole capture as a .har file for later analysis.

Tools it opens

JSON ViewerOpens the response of any API call as an expandable tree.
HTTP Request BuilderReplays a captured request with your own headers and body.
Online Media PlayerPlays detected video, audio and streaming links.
cURL ParserTurns the copied cURL command into readable code.
XML Formatter & ValidatorOpens XML, RSS and Atom responses, formatted and checked.
HTML Viewer (Live Preview)Loads an HTML response with separate HTML, CSS and JS tabs.
CSV Viewer & EditorOpens CSV downloads as a sortable, filterable table.

Install in under a minute

1Unzip the downloaded file.
2Open chrome://extensions in Chrome, Edge, Brave, Arc or Opera.
3Enable Developer mode (toggle in the top-right).
4Click Load unpacked and select the unzipped folder.
5Open any website, use it normally, then click the Coders Hub icon to see every request.

Privacy

Captured requests stay in the extension's memory for the current tab and are cleared when the page reloads or the tab closes. Request headers, cookies and tokens are never stored or sent anywhere. A link only leaves your browser when you choose to open it in a Coders Hub tool.