HTTP Debugging Tool

A developer-focused HTTP debugging tool to inspect, modify, and replay web requests, helping teams debug APIs, optimize performance, and ensure reliability.

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2,636+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
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About This Tool

The tool acts as a configurable HTTP proxy to capture traffic between a client and server, enabling inspection of requests and responses, headers, bodies, and timings. It is intended for developers, QA engineers, and integration teams who need reproducibility and visibility into API calls.

Conceptually it routes traffic through a controlled point, records sessions, and provides the ability to edit and replay traffic, apply filters, and view result details. TLS interception can be configured to inspect encrypted traffic, with security controls and certificate handling as needed. Users benefit from deterministic replays, built‑in export options, and straightforward comparisons across API versions.

Core value comes from accelerating debugging cycles, validating data transformations, and diagnosing performance issues without modifying client code. Core features include capture, replay, request/response inspection, timing metrics, and session exporting. Use cases range from diagnosing authentication flows to verifying payload schemas and tracking regression in API behavior across environments.

This tool is designed for engineers who require high fidelity traffic analysis, repeatable test scenarios, and easy collaboration through session exports and shareable artifacts.

How to Use

  1. Configure the tool as a proxy and route traffic through it.
  2. Start capture and locate relevant sessions with filters.
  3. Edit requests or headers and replay to reproduce issues.
  4. Inspect responses for status, headers, body, and timings; add assertions if needed.
  5. Save and export the session for sharing or CI integration.
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Frequently Asked Questions

Find Quick Answers

What is the primary use case?
The tool is designed to capture HTTP traffic, inspect requests and responses, modify and replay them to reproduce bugs, validate API behavior, and measure performance in a controlled environment.
Can I automate tests?
Yes. Sessions can be exported as scripts or data, integrated into CI pipelines, and used to run repeatable request sequences that verify API behavior, responses, and performance across environments.
Which protocols are supported?
The tool supports HTTP/1.1 and HTTP/2 (and evolving HTTP/3) traffic, with TLS interception options where appropriate, enabling visibility into both plaintext and encrypted communications.

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