Stop the "Fix ➔ Fail ➔ Retry" Loop
Inject runtime context to fix bugs now — before the loop burns through your time and credits.
The IDE Extension for AI One-Shot Bug Fixing
Powered by real runtime traces, variables, and logs — not guesses.
Works seamlessly with your stack
See real runtime values directly in your code
Syncause captures traces, function arguments, and logs as your app runs, then replays the exact runtime values inline with your source code.
Made for modern
coding workflows
Syncause is shaped by the practices that distinguish world-class engineering teams: deep understanding, fast iteration, and commitment to quality.
Fix Root Causes
Help AI fix the problem, not patch the symptom. AI often suggests superficial fixes (like adding null checks). With runtime data, Syncause helps AI trace why the variable became null in the first place, preventing future regressions.
Replay Flaky Bugs
Stop guessing. If a bug happens once, Syncause captures the entire state. Replay the "crime scene" instantly—perfect for debugging flaky tests or race conditions that vanish when you attach a standard debugger.
Safe Iteration
Add features without breaking what works. Record a trace of working code before you make changes. Use it as a safety net to ensure your new features don't silently alter existing logic flow.
Don't reproduce. Just replay.
When a bug happens, you already have the truth.
Always On
We record execution flow in the background. Zero config.
Bug Happens
Crash, error, or logic fail? No need to restart or add logs.
Inject Truth
Feed the snapshot to coding agents. It fixes the bug instantly.
1 Minute to Install, Forever to Work
Install the extension
Get Syncause from the VS Code marketplace or your favorite IDE.
Click "Enable Debugging"
Syncause analyzes your project and auto-installs instrumentation.
Run your app
See runtime facts inline in your code and share to AI.
Secure by Design
Local Direct Connect
IDE extension connects directly to your app via an encrypted tunnel. Sensitive data never touches our servers
Metadata Only
We only transmit signals, not content. Your code and data stay on your machine
Production Safe
Full debugging power in Dev/Test. Built-in circuit breakers ensure the debugger never affects your production
Frequently Asked Questions
Absolutely. Syncause is built to complement Cursor/VS Code. While AI Agents try to add logs and restart your app, Syncause instantly feeds runtime data to Cursor/VS Code without breaking your flow.
Syncause is designed for local development (Dev/Test environments). It automatically detects production builds and becomes inert to ensure zero performance impact on your live users.