VS Code Extensions
INTHON Language Support

INTHON Language Support

by harvadeeplabs

Syntax highlighting and file icon support for the INTHON programming language.

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Version

0.2.0

Last updated

Jul 10, 2026

This VS Code extension provides a comprehensive integration suite for the INTHON programming language (.inth), an agent-level programming language designed for AI-native workflows.

Features

  • Syntax Highlighting: Supports control keywords, agentic paradigms (agent, goal, policy, plan, remember, recall, etc.), python bridges, strings, comments, and primitive types.
  • Custom File Icon: Renders .inth files in your VS Code workspace with the official INTHON branding.
  • Bracket Matching & Auto-closing: Smart editing configurations for functions and statements.
  • Rich Code Snippets: Quick templates for declaring agents, policies, inputs, outputs, memory actions, and tool bindings.
  • Real-time Diagnostics: Linting errors and warning annotations highlighted on save or typing via the local compiler server.
  • Auto-Formatting: Drop-in layout formatting support using VS Code's standard formatter.
  • Interactive Script Runner: Execute .inth files instantly from the Command Palette (INTHON: Run Current Script) and view trace logs, execution outputs, duration, and LLM budget/cost calculations.

Requirements

The extension communicates with the INTHON IDE server. Before editing or running code:

  1. Start the compiler server:
    python ide/inthon_server.py
    
  2. The server runs on http://localhost:7474 and bridges VS Code editing events directly to the INTHON compiler pipeline.

Installation

Manual Installation

To install the extension locally:

  1. Copy the ide/vscode folder into your VS Code extensions directory:
    • Windows: %USERPROFILE%\.vscode\extensions\inthon-support
    • macOS / Linux: ~/.vscode/extensions/inthon-support
  2. Restart VS Code.
    • For forks like Cursor or VSCodium, place the extension inside their respective extension folders (e.g. ~/.cursor/extensions/inthon-support or ~/.vscodium/extensions/inthon-support).

Usage

Simply open any .inth file (e.g., examples/hello.inth) and enjoy full syntax highlighting, diagnostics, formatting, and live script running.

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