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2026.06.11@stevemorinnyc

API Parrot: A Free Tool That Reverse Engineers Any API and Writes the Code for You

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Reverse engineering APIs is one of the most tedious parts of web scraping and automation work. API Parrot is a free, beta-stage desktop tool that captures HTTP requests, lets you inspect them visually, and then exports working code to reproduce those requests programmatically. Steve Morin walks through the tool in 42 seconds and explains why it matters for developers who build automations against undocumented APIs.

What API Parrot Actually Does

The tool works in three stages. First, it captures HTTP requests as you interact with a website or application, acting as a proxy between your browser and the target server. Second, it provides a visual interface to investigate those requests, showing headers, payloads, query parameters, and response structures in a flow-based diagram. Third, and most useful, it exports code that replicates the captured API calls, so you can drop that code directly into your automation or scraping project.

The screenshots from the video show a dark-themed desktop app with a node-based flow visualization on the left (showing request/response chains) and a properties panel on the right listing individual API endpoints and their parameters. The tagline on the tool's landing page reads "Mimic Any API," and the description positions it for developers who want to automate interactions with websites that do not offer public APIs.

Why This Matters for Automation Developers

Anyone who has built a web scraper or automation against a site without a documented API knows the pain. You open browser DevTools, navigate the Network tab, click through the site to trigger the right requests, then manually reconstruct those calls in Python or Node. You deal with authentication tokens, session cookies, CSRF headers, and request signing. Each step is manual and error-prone.

API Parrot compresses that workflow. Instead of manually copying headers from DevTools, you let the tool record everything, then export it. This is especially valuable for sites that use complex authentication flows or single-page applications where the real data fetching happens through dozens of XHR calls that are hard to trace by hand.

Tools like mitmproxy and Charles Proxy have handled the capture-and-inspect part for years. What sets API Parrot apart is the code export step, which bridges the gap between "I can see the requests" and "I have working code that makes those requests."

Current Limitations

As of the video's posting in early January 2025, API Parrot was in beta with builds available for Linux and Windows only. There was no Mac version yet, though Morin mentioned a Mac release was coming soon. The tool is free during the beta period. Given that it launched recently and platform support is still expanding, expect rough edges.

It is also worth noting that reverse engineering APIs sits in a legal gray area depending on your jurisdiction and the target site's terms of service. Tools like API Parrot make the technical work easier, but they do not change the legal calculus. Always check a site's terms before automating against their undocumented endpoints.

Key Takeaways

  • API Parrot captures, inspects, and exports code for undocumented HTTP APIs in a single workflow
  • The tool is free during its beta period and available on Linux and Windows, with Mac support in development
  • It solves a real pain point: turning observed API traffic into usable, reproducible code without manual reconstruction
  • The visual flow-based interface makes it easier to understand multi-step API interactions than raw DevTools network logs
  • Reverse engineering APIs carries legal considerations that the tool itself does not address

Resources

Published June 11, 2026. Writeup generated from a favorited TikTok.