What is HTTP-TRACYKER?

HTTP-TRACYKER focuses on inspecting and modifying browser HTTP requests, headers, cookies, and response data. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is HTTP-TRACYKER for?

HTTP-TRACYKER is a consumer product built for web developers and QA testers.

Is HTTP-TRACYKER free?

Yes — HTTP-TRACYKER is free to use.

What platforms does HTTP-TRACYKER run on?

HTTP-TRACYKER runs on the web and embeddable surfaces.

Is HTTP-TRACYKER still active?

Unverified. HTTP-TRACYKER has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who develops HTTP-TRACYKER?

HTTP-TRACYKER is developed by Gerri.

When did HTTP-TRACYKER launch?

HTTP-TRACYKER first shipped in 2026.

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HTTP-TRACYKER

Name: HTTP-TRACYKER
Author: Gerri

mozilla.orgBrowser DevTools & extensions

HTTP-TRACYKER is a Firefox extension for inspecting HTTP request and response headers, cookies, and request data. It also lets users add or modify request headers before requests are sent, supporting browser debugging and testing workflows.

FreeWebEmbeddable

Visit mozilla.org

Overview

6 features

In the Browser DevTools & extensions space, HTTP-TRACYKER takes a focused approach. It focuses on inspecting and modifying browser HTTP requests, headers, cookies, and response data. HTTP-TRACYKER is a consumer product aimed at web developers and QA testers. HTTP-TRACYKER costs nothing to use. It runs on the web and embeddable surfaces.

Behind HTTP-TRACYKER is Gerri, and it first shipped in 2026. Among its 6 catalogued features are request inspection, response inspection, and header editing. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Request inspection
Response inspection
Header editing
Cookie inspection
Request data viewing
Browser tab access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed3 Sept · 00:24 UTC
HTTP-TRACYKER verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about HTTP-TRACYKER

What is HTTP-TRACYKER?: HTTP-TRACYKER focuses on inspecting and modifying browser HTTP requests, headers, cookies, and response data. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is HTTP-TRACYKER for?: HTTP-TRACYKER is a consumer product built for web developers and QA testers.
Is HTTP-TRACYKER free?: Yes — HTTP-TRACYKER is free to use.
What platforms does HTTP-TRACYKER run on?: HTTP-TRACYKER runs on the web and embeddable surfaces.
Is HTTP-TRACYKER still active?: Unverified. HTTP-TRACYKER has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who develops HTTP-TRACYKER?: HTTP-TRACYKER is developed by Gerri.
When did HTTP-TRACYKER launch?: HTTP-TRACYKER first shipped in 2026.
What languages does HTTP-TRACYKER support?: The interface is available in 32 languages, including Czech, German, and Greek.

At a glance

Pricing: Free
Platforms: Web
First seen: 3 Sept 2026
Built for: web developers and QA testers
Model: B2C
Solves: Inspecting and modifying browser HTTP requests, headers, cookies, and response data.

Registered as

Firefox Add-ons: http-tracyker

Developer

Gerri

Index record

Indexed: 3 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 3 Sept 2026

Identity audit (13)

Slug: http-tracyker-mozilla-org
Lifecycle last checked: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 3 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 3 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/http-tracyker

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