FlowLens

FlowLens

Magentic AI
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About

FlowLens is an AI-native debugging and session-recording tool that captures everything needed for correct, context-aware bug diagnosis and lets AI coding agents fix bugs autonomously. With a simple browser extension and optional MCP server, FlowLens records full user sessions, including video of the UI, network-request data, console logs, user interactions (clicks, inputs, navigation), storage state (cookies, local/session storage), system info, and more, all synchronized on a unified timeline. Once a bug is reproduced, FlowLens bundles that complete context into a single “flow” that can be shared via link. AI coding agents compatible with MCP (such as those from major providers) can then load the flow, inspect network activity, error logs, UI state, and user inputs, and automatically analyze root causes and suggest or even generate code fixes. This removes the need for manual replays, copying and pasting logs, or writing verbose bug descriptions.

About

Skim through traffic with highlighting by content type, status & source, or use powerful filtering tools to precisely match the messages that matter to you. Examine the URL, status, headers & body of each request or response, with inline explanations & docs from MDN. Dig into message bodies with highlighting & auto formatting for JSON, HTML, JS, hex and others, all using the power of Monaco, the editor from Visual Studio Code. Precisely match requests, jump to them when they appear, and edit anything: the target URL, method, headers or body. Manually respond directly to requests as they arrive, or pass them upstream, and pause & edit the real response on the way back. Step through HTTP traffic request by request, or manually mock endpoints and errors. Create rules to match requests and respond with your own content, to quickly prototype against new endpoints or services.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers and engineering teams looking for a solution to accelerate debugging by giving AI coding agents full browser-session context

Audience

Developers looking for a solution for debugging, testing and building with HTTP

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$11 per month
Free Version
Free Trial

Pricing

Free
Core features (interception, debugging, manual rewriting for all traffic) are all free.

Advanced features (automated rewriting, import/export, advanced configuration options) require a Pro subscription.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • HTTP Toolkit makes it easy to intercept traffic even in complicated cases, like Docker, Android and command-line/backend software. The UI looks good (much nicer than older alternatives like Fiddler, Burp and Charles) and the UX is clear. I really like that it's all open source so you can see how it works.

Cons

  • Not quite as feature filled as older tools like Fiddler/Burp/Charles, but rapidly improving and it's possible to contribute to help move things forwards.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Magentic AI
United Kingdom
magentic.ai/

Company Information

HTTP Toolkit
Founded: 2018
Spain
httptoolkit.com

Alternatives

Alternatives

Fiddler

Fiddler

Progress Software

Categories

Categories

Integrations

Android
Brave Browser
Claude Code
Cursor
Devin Desktop
Docker
Electron
Gemini CLI
GitHub Copilot
Google Chrome
Microsoft Edge
Model Context Protocol (MCP)
Mozilla Firefox
OpenAI Codex
Semarchy xDI
Visual Studio Code

Integrations

Android
Brave Browser
Claude Code
Cursor
Devin Desktop
Docker
Electron
Gemini CLI
GitHub Copilot
Google Chrome
Microsoft Edge
Model Context Protocol (MCP)
Mozilla Firefox
OpenAI Codex
Semarchy xDI
Visual Studio Code
Claim FlowLens and update features and information
Claim FlowLens and update features and information
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Claim HTTP Toolkit and update features and information