CapCut
Follow UI actions to discover caption templates
An agent operates CapCut while observing requests and saved files to locate animated-caption assets and their download paths.
Author report
REVERSE ENGINEER ANYTHING / IN PRACTICE
Open the app.
Follow the trail.
What are people doing with REA? Explore real investigations, from caption templates to device protocols, with the workflows and original evidence behind them.
From X & public projects · Original languages · Sources included
INVESTIGATION TRACE@dotey / X
INVESTIGATION TARGET
.templateCapCutAnimated captions
REAComputer UseCodex
AUTHOR-REPORTED RESULT
2,291 templates
THE COLLECTIONSpecific questions. Traceable findings.
Find a starting point in someone else's investigation
The collection
13 cases & related ideas
Open a case for its workflow and evidenceCodex / ChatGPT
Trace browser annotations to a public API
Investigate the annotation-to-composer flow in Codex's browser, discover an existing website API, and build a test page.
Author report
Claude Slides
Rebuild a Slides editor from obfuscated assets
Inspect downloaded editor scripts and styles with REA Skill, then restructure the recovered implementation with Claude Code. A code commit is linked.
Public code
Smart toilet / BLE
Put a smart-toilet remote in the menu bar
Use REA and Codex to investigate a WeChat miniprogram's Bluetooth protocol and build a native remote, with a lid-control demonstration.
Author report
DX-Ball 1.07
Recover a sound-pan function, then check its bytes
Follow x86 instructions, caller references, and constants to reconstruct the game's position-to-pan calculation in C.
Public code
Notion Desktop
Follow a copy operation to the system clipboard
Trace Notion's page API through preload wrappers and main-process IPC, then examine how copied HTML references stored block data.
Official investigation
Touhou TH04 / PC-98
Recover a bullet-ring calculation from 16-bit code
Inspect a PC-98 game's angle helper and connect its arithmetic to a readable C++ reconstruction of fixed and aimed bullet rings.
Public code
Aegis Authenticator
Understand a login code's 30-second cycle from an APK
Trace code-generation methods in an Aegis release APK and demonstrate the recovered time-step rule with an adjustable clock.
Official investigation
DownUnderCTF
Turn a flag checker into solvable constraints
Find checking functions in an introductory CTF binary, translate masks and sums into equations, and verify the result with the original program.
Official investigation
Self-built Electron app
Test static analysis against a self-built app
A Japanese hands-on article checks REA's module and IPC findings against a four-file Electron-style app and records unresolved dynamic paths.
Author report
Lemmings (1991)
Investigate Lemmings with REA, then refine the reconstruction
An English community progress post explicitly names REA in a reconstruction of the 1991 game Lemmings, with pixel-level adaptation still underway.
Author report
Air conditioner / AR
Take an appliance remote from desktop to AR glasses
jinglian cites an air-conditioner remote as protocol-investigation inspiration. Its creator shows a glasses port made with Codex and Lens Studio.
Related inspiration
Browser annotations
Recreate browser annotation interactions from a recording
In response to the REA annotation investigation, this post offers an alternative: record the interaction and have an agent reproduce the visible behavior.
Related inspiration
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A COLLECTION WITH RECEIPTS
Sources, and their limits.
We collect specific investigations. Every summary leads back to original material, with author reports distinguished from inspectable implementations.
Read the curation guidelines ↗Public code
Inspect an implementation, commit, or test. This does not mean we independently reproduced it.
Author report
The author names REA and describes a process or outcome. Claims keep their original scope.
Official investigation
A concrete case published by the REA project, with an investigation trail to follow.
Related inspiration
A useful adjacent idea whose creator did not confirm REA use, or used another method.
KEEP THE TRAIL GOING
What did you find?
An original post, a specific target, and a process others can follow. Contributions in every language are welcome.