Source2Toolkit is a server-side development toolkit for Counter-Strike 2, built on top of MetaMod:Source.

It provides a powerful scripting and extension layer that enables developers to build plugins ranging from simple gameplay tweaks to advanced engine-level modifications.

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Why should you choose Source2Toolkit?

Source2Toolkit is designed with engine-level access and performance in mind. It combines low-level control with high-level utilities, allowing you to work directly with Source 2 internals while still keeping development efficient.

The toolkit focuses on:

• Direct interaction with the game’s memory and schema system
• Minimal overhead and near-native execution
• Clean and modern API design for plugin development
• Flexibility without artificial limitations

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A list of features:

Engine access

• Schema System: Access Source 2 SDK classes, offsets and fields through schema.
• Entity System: Work with entities using schema-based access and native structures.
• Hooks: KHook — virtual, vtable and function detours on the one engine Metamod runs, with pattern scanning support.
• Memory: Direct memory access and manipulation for advanced use cases.
• Addresses: Resolved engine functions — spawn, take damage, set model, set pawn and more — ready to call.
• Game Systems: Find and register IGameSystem implementations on the engine's factory list.
• GameConfig: Signature and offset management system for cross-version compatibility.
• Dynamic Libraries: Load and interact with external modules and engine interfaces.

Gameplay

• Commands: Register and handle console or chat commands with full control over execution.
• ConVars: Access, modify and replicate console variables across clients.
• Events: Hook engine and game-level events with pre/post execution control.
• GameEvents: Fully typed game event system for safe and predictable handling.
• Network Messages: Allocate, send and hook Source 2 net messages by ID or by name.
• Menus: Build chat menus with options, titles and per-player state.
• Custom HUD: Hook click callbacks on custom HUD layout entities.
• Scheduler: Timers and next-frame execution utilities.
• Tracing: Built-in trace utilities for raycasts and collision queries.

Services

• HTTP: Asynchronous requests through Steam's HTTP client, with availability and queue reporting.
• JSON: Parse and build JSON values without pulling in a dependency of your own.
• MySQL: Query the database and walk typed result sets by column name or index.
• Paths: Resolved paths for the game, the toolkit root, configs, gamedata and plugins.

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Source2Toolkit is an open-source project, designed to give developers full control over their server environment without unnecessary restrictions.