Send REST, GraphQL and WebSocket requests from your browser

A request builder for the calls you make while building an integration: set the method, headers, auth and body, send it, and read the response with timing and status. Requests go from this tab to the host you typed, and reusable environments keep the base URL and tokens out of every call.

API Tester — Send REST, GraphQL, and WebSocket requests directly from your tab. (REST · GraphQL · WS)

What it does

• REST, GraphQL and WebSocket — One client covers request/response calls and socket connections, so a live endpoint is tested the same way a REST one is.
• Import a cURL command — Paste a cURL line out of docs or a terminal and the request is rebuilt in the form — which turns a copied example into an editable request instead of a starting point you retype.
• Environments and variables — Named environments hold the base URL and credentials, and variables are substituted at send time, so the same request moves between local, staging and production.

What it does not do

Requests are sent by your browser, so they follow its CORS rules. When a host refuses browser origins you can switch on the CORS proxy for that tab — InTab's built-in relay or a proxy URL you set — and it then carries the request, headers included.

InTab is free and runs in this browser tab. There is no account, no sign-up and no login screen. Requests leave the tab when you start them — an AI prompt to the provider you chose (including the AI actions in each tool, which send the content they name), an API call, a web search, or an optional encrypted backup to your own Google Drive or OneDrive. Read the privacy policy for what each of those sends, and where.

Other tools in InTab

• Agents — Stream AI answers from top models with your own API key.
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• Formatters — Prettify and validate JSON and XML with inline error locations.
• Converter — Convert images, documents, spreadsheets, data and archives without uploading them.
• Diff Check — Compare files side-by-side or inline with whitespace controls.
• Comparators — Audit .env files, JSON, and text lists for missing, extra and changed keys.
• Library — Search 148 bundled ServiceNow APIs and their 1046 documented methods.
• DrawFlows — Diagram architectures on an infinite canvas with 230+ shape packs.