✨ Portable rules across IDEs • Safe sync & rollback • Zero lock-in

Portable AI Rules.
Safe Sync. Zero Lock-in.

Write rules once in Synapse format. Sync to Trae, Cursor, Windsurf, Cline, and Zed. Add rollback, local token cost analysis, and proactive optimization so changes stay safe and cheap. It’s not just keyword replacement. We combine local VS Code Edge AI models to perform lossless semantic compression, costing you absolutely zero API tokens.

⬇️ Download ⚡ Buy Pro - $9

Built-in IDE Adapters

70%

Token Savings

Servers (MCP + WS)

How Synapse Compares

Most tools convert formats. Synapse adds safe sync, optimization, and zero lock-in.

Feature	Format Converters	Single-IDE Rules	Synapse
Cross-IDE sync (Trae, Cursor, Windsurf, Cline, Zed)	❌	❌	✅
Safe rollback & restore	❌	❌	✅
Local token cost analysis	❌	❌	✅
Proactive optimization suggestions	❌	❌	✅
Conflict detection	❌	❌	✅
CLI + Extension + MCP	❌	❌	✅
Import existing IDE rules (zero lock-in)	❌	❌	✅

Why Developers Love Synapse

Stop copying rules between IDEs. Start unifying your AI toolchain.

🔄

Write Once, Run Anywhere

Create rules in unified .synapse format. Compile to Trae, Cursor, Windsurf, Cline, and Zed with the same source of truth.

💰

Real-Time Token Visualizer

See how many tokens your rules are consuming via an in-IDE webview. Track totals, top rules, and cost drivers fast.

🧠

Rule Compressor Engine

Lightning-fast V8 regex compression + whitespace cleanup. Pro adds cloud-synced dictionaries, logic symbolization, and a VS Code Edge AI fallback for lossless semantic pruning with 0 API token cost.

⚡

One-Click Sync

Sync from VS Code and keep outputs consistent across enabled IDE targets. Import existing IDE rules during init.

🔌

Universal Access

Expose the same rulebase via MCP and WebSocket so any editor, agent, or tool can integrate.

📊

Control Center

One unified sidebar view: Quick Actions + Cost + Improvements + License. No more hunting through multiple panels.

Synapse vs Built-in Rules

Most IDEs lock you in. Synapse sets you free.

Feature	Trae	Cursor	Windsurf	Synapse
Works in Trae	✅	❌	❌	✅
Works in Cursor	❌	✅	❌	✅
Works in Windsurf	❌	❌	✅	✅
Works in Cline	❌	❌	❌	✅
Token Cost Analysis	❌	❌	❌	✅
Lazy-loaded Skills	❌	❌	❌	✅
Control Center (Actions + Cost)	❌	❌	❌	✅
Switch IDEs Without Rewriting	❌	❌	❌	✅

Simple, Transparent Pricing

Free forever. Pro for $9 one-time (no recurring fees). Enterprise later.

Free

$0forever

✅ Real-Time Token Visualizer: See exactly how many tokens your rules are burning via Webview.
✅ Lightning-Fast Regex Engine: Uses V8's native single-pass scan for zero lag.
✅ Basic Defluffer: Automatically strips 40+ common filler phrases and trims whitespace.
✅ Code Protector: Isolates your code blocks during compression so they don't break.

Download adapters

Best Value

Pro

$9one-time

One-time payment • No recurring fees

✅ All Free Features Included
✅ Anthropic Claude Tokenizer: Get precise calculations for Sonnet models, not just OpenAI.
✅ Supabase Cloud Sync: Get dynamic, live-updated dictionaries pushed directly to your local IDE.
✅ Advanced Logic Symbolization: Shrink heavy logic into high-density tokens like [IF file==JS].
✅ VS Code Edge AI Fallback: If standard rules fail to shrink, we utilize local vscode.lm for lossless semantic pruning—100% free with 0 API cost.
✅ Token Budget Guardrail: Stops you from sending huge prompts by warning you if rules exceed your custom token threshold.

Buy Pro - $9 →

Enterprise

Coming soon

✅ Everything in Pro
✅ Org policy controls
✅ SSO / SCIM
✅ Audit logs

To be rolled out

30-day money-back guarantee on Pro.

Token FAQ

Tokens are how AI models measure input and output size. Less tokens usually means lower cost and faster responses.

What is a token?

A token is a small chunk of text (often ~4 characters of English on average). Models bill and enforce limits using tokens, not characters.

How does it affect spending?

Most hosted AI tools charge per token (input + output). If your rules are verbose, every chat includes extra tokens, increasing cost over time.

How Synapse helps

Shows token counts in real-time so you can see what’s expensive.
Compresses rules safely (including code-block protection) to remove fluff.
Pro can fallback to local VS Code models for semantic pruning with 0 API token cost.

Want to see typical token pricing across popular models? View a model pricing reference.

Install in 2 Minutes

Use the VS Code extension for day-to-day sync, and the CLI for automation.

🧩

VS Code Extension

Install Synapse Rules, then run “Synapse: Initialize Project” and “Synapse: Sync Rules”.

VS Code setup

⌨️

CLI

Initialize and sync via terminal for CI and automation workflows. Also available as native binaries.

CLI setup

Portable AI Rules.Safe Sync. Zero Lock-in.