GCF - Graph Compact Format (JetBrains Plugin)

Syntax highlighting for GCF, the AI-native wire format for structured data. 71% fewer tokens than JSON.

Features

• Syntax highlighting for .gcf files via TextMate grammar
• Highlights headers, section markers, symbol IDs, edge notation, strings, numbers, booleans, key-value pairs, and more
• Works in all JetBrains IDEs: IntelliJ IDEA, PyCharm, WebStorm, GoLand, RustRover, CLion, and others

Installation

From disk (local build)

1. Build the plugin:

   ./gradlew buildPlugin
   

2. The plugin zip will be at build/distributions/gcf-jetbrains-0.1.0.zip

3. In your JetBrains IDE, go to Settings > Plugins > Gear icon > Install Plugin from Disk...

4. Select the zip file and restart the IDE.

From JetBrains Marketplace

Coming soon.

Requirements

• JetBrains IDE version 2023.1 or later
• The bundled TextMate plugin must be enabled (it is enabled by default)

What is GCF?

GCF (Graph Compact Format) is a wire format designed for LLM tool responses, MCP servers, and agent-to-agent communication. It supports five output formats (JSON, YAML, CSV, TOML, MessagePack) with perfect round-trip fidelity.

• GCF Specification
• Documentation
• VS Code Extension

Development

Prerequisites

• JDK 17+
• Gradle (wrapper included)

Build

./gradlew buildPlugin

Run in a sandbox IDE

./gradlew runIde

This launches a sandboxed IntelliJ IDEA instance with the plugin installed for testing.

Verify

./gradlew verifyPlugin

License

MIT. See LICENSE.