Build games faster with AI tools.
Signal Loop creates practical AI-powered tools that help game developers move from idea to implementation with less friction. Covering build and test workflows, our products reduce manual effort and shorten iteration cycles.
Our Products
A focused suite of AI tools
Unity Code MCP Server
A direct bridge between your AI agent and Unity.
The open-source Unity Code MCP Server gives AI agents first-class access to the Unity Editor and Play Mode.
It turns Unity automation into a practical search / execute / verify loop: inspect the live project, act directly through Editor APIs or player input, then validate the result against real runtime state.
Instead of stopping at suggestions, agents can understand the scene, make focused changes, run gameplay checks, and keep iterating with observable feedback.
Search
Search the live Unity project
Let agents inspect scenes, assets, components, logs, Play Mode state, and runtime values before deciding what to do next.
Learn more →Execute
Execute inside the Editor
Run generated C# with Unity Editor API access to create objects, update assets, wire scenes, prepare test state, and drive input actions.
Learn more →Verify
Verify with runtime feedback
Run tests, enter Play Mode, emulate player input, capture logs and screenshots, and inspect the live result after every action.
Learn more →Unity Code Agent
Fully featured AI agent inside Unity Editor.
Direct access to Unity Editor API. Autonomous work. Open source.
Unity Code Agent is designed for developers who want an AI assistant embedded directly into the Unity workflow, with enough project context and tool access to move beyond chat-style suggestions into practical editor automation.
Explore, build and verify workflows
By reading the full editor context, including reflection-only data and asset metadata, the AI can build a complete picture of the current project state instead of relying on source files alone.
It can create and update code, scenes, and assets, including shaders, imports, scriptable objects, and more.
The agent can close the feedback loop with automated verification. It can trigger Playmode, simulate precise player input, and monitor the game state in real time as part of a self-correcting workflow.
Includes support for
- MCP Servers — integrate Model Context Protocol servers
- Skills — load reusable prompt modules
- Hooks — intercept and customize session behavior
- Custom Agents — define specialized sub-agents
- Image Input — send images as attachments
// Main game loop: update, physics, render
void GameLoop() {
while (isRunning) {
deltaTime = Time.deltaTime
UpdatePlayerInput()
UpdateGameState(deltaTime)
Physics.Simulate(deltaTime)
RenderFrame()
}
}
Loop Coder
A customizable AI coding assistant for complex, multi-file development.
Loop Coder is a Visual Studio Code extension built for developers who need more control than a basic code generation tool provides. Review all changes in a diff view, accept or reject per-file, and rewind interactions to refine without losing momentum.
- Generate and modify code across multiple files with clear review controls
- Preview changes, inspect diffs, and accept updates selectively
- Rewind the last interaction to refine prompts without losing progress
- Configure models, system prompts, and context for different tasks
Latest
From the Blog
Using Unity Code MCP Server to Playtest Unity Games with AI Agents
A practical look at using play_unity_game to automate gameplay checks in real Unity projects, with Pong and top-down driving examples.
Unity Code MCP Server v0.4 Release Notes
The 0.4 release makes Unity agent workflows easier to connect, easier to observe, and more reliable during Play Mode and test automation.
Unity Code MCP Server v0.3-preview Release Notes
The 0.3 release adds PlayUnityGame tool and improves reliability for AI agent workflows.
Start building smarter, today.
Signal Loop tools integrate into the workflows you already use. Whether you are automating Unity Editor tasks or accelerating code generation in VS Code, each tool is designed to reduce friction and let you focus on what matters — building great games.
Questions? Reach us at signalloopdev@gmail.com