Firefox add-on with keyword - request

Displays a sidebar that lets you to forge HTTP requests. Press Ctrl+Shift+Y to show the sidebar and make your own HTTP request. You can choose the method GET, HEAD, POST, OPTIONS, PUT DELETE and the body data to send. Response in the main window.

An extension for controlling requests.

Intercept HTTP and HTTPS Requests. Add custom rules to modify request/response headers, block/redirect requests, modify query params. Example Usage: This extension can be used to block all ads having url (*/ad.x.com/*) by creating rules

Block requests with URL match patterns

Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address

tweak allows you to mock and modify HTTP requests without leaving the browser

Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.

Logs URLs of HTTP request to a dedicated tab

A Firefox extension that intercepts and edits HTTP requests, allowing you to view, customize, and send them directly from your browser. Incredibly easy and comfortable to use. Good for penetration testers and developers.

Test and debug API requests directly from your browser.

Customize web requests by coding JavaScript yourself.

Easily send out HTTP requests to get some data from a server

Copy requests from the devtools network panel as Python requests code for fast traffic mimicing.

This's a devtools extension to introduce delay or blocking for http requests, based on configuration of URL patterns and delay time

mRequestControl is a Firefox Plugin which lets you manipulate the responses of HTTP requests.

exposes post requests , e.g. to https://postpen.requestcatcher.com Warning: Use this with care. Your login Data can get exposed to the internet. https://github.com/Jochnickel/mozilla_postpen/tree/sniffer

HeaderTools is a versatile and user-friendly extension designed to provide users the capability to manipulate and inject request headers based on regex domain selectors.

Request Amazon product reviews auto and track & manage all of your product reviews in just 1 place

This Add-on will filter all HTTP requests (including requests for javascript files, images etc) based on the list of regular expressions the user provides. The addon works off of a Deny-list configured via the Options/Settings page for the Addon

Get the websites you visit to send you a copy of, or delete the personal information that they have collected on you.

Запрос политики (RequestPolicy) для Quantum. Запретите вашему браузеру подключаться к сторонним ресурсам без согласия пользователя.

Send HTTP requests directly from the browser, and save templates of your favorites. Supports special viewing of JSON, XML, and SVG responses.

Currently logs all URLs accessed by the app (into app console & into standard output stream (using dump()), whether the request is explicitly made by the user or automatically made by the app itself.

A browser extension to intercept HTTP requests

A "hello world" type of request blocker