Works with your favorite IDEs
VS Code
VS Code
Cursor
Cursor
Windsurf
Windsurf
···

Stop the "Fix ➔ Fail ➔ Retry" Loop

Inject runtime context to fix bugs now — before the loop burns through your time and credits.

How it works

The IDE Extension for AI One-Shot Bug Fixing

Powered by real runtime traces, variables, and logs — not guesses.

Works seamlessly with your stack

Node.js
Java
Python

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.

Don't reproduce. Just replay.

When a bug happens, you already have the truth.

1
💬

Always On

We record execution flow in the background. Zero config.

2
🔍

Bug Happens

Crash, error, or logic fail? No need to restart or add logs.

3

Inject Truth

Feed the snapshot to coding agents. It fixes the bug instantly.

1 Minute to Install, Forever to Work

One click generates the prompt. AI handles the terminal.

Dev dependency only. Zero production impact.
1

Click "Install SDK"

Open the Syncause sidebar. Just click one button. No docs needed.

2

Auto-Prompt Generation

Syncause instantly fills your AI chat with the perfect setup instruction.

3

AI Executes

The Agent runs the install command and configures your app. Done.

Cursor Chat
U
@Agent Install SDK
AI
> npm install syncause
> Injecting init code...
Installed successfully!
@Agent Install SDK

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.

Save your time.Fix it now.

Node.jsJavaPythonMore coming soon