Overview
Visualize, diagnose, and trace API traffic directly inside Chrome DevTools.
Blackbox API Visualizer is a Chrome DevTools extension for understanding network and API traffic directly inside your browser. Instead of digging through hundreds of raw network requests, Blackbox organizes traffic into a developer-focused interface with request inspection, session analysis, and an interactive network graph. Features: • Capture network requests directly from Chrome DevTools • Inspect Fetch, XHR, documents, scripts, stylesheets, images, WebSockets, and other request types • View request URLs, headers, query parameters, bodies, response metadata, timing information, and initiator details • Explore an interactive graph of pages, domains, and API endpoints • Identify repeated requests, polling behavior, error clusters, slow requests, and large responses • Analyze top endpoints and domains across a DevTools session • Filter requests by type, errors, domain, and session insights • Inspect captured response bodies without replaying network requests Blackbox is designed for developers debugging unfamiliar applications, tracking API behavior, investigating performance issues, and understanding how a web application communicates with its backend services. Blackbox processes captured network information inside the DevTools extension and does not transmit captured traffic to a Blackbox server.
Details
- Version0.5.0
- UpdatedSeptember 7, 2026
- Offered bymedkit992
- Size63.87KiB
- LanguagesEnglish
- DeveloperBlackbox
10203 Twill Rd Greer, SC 29651 USEmail
medkit992@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Blackbox API Visualizer has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Blackbox API Visualizer handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
