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What is Modus?

Modus is an open source, serverless framework for building intelligent agents and APIs in Go or AssemblyScript (a TypeScript-like language). Modus is a runtime purpose-built for orchestrating autonomous AI agents that operate as first-class citizens in your stack.

You write your app logic in Go or AssemblyScript—whichever you prefer—and Modus compiles everything to WebAssembly for fast performance at scale and at the edge. Each agent instance gets a dedicated execution environment, sand-boxed for resiliency, scalability, and security.

Modus enables both stateless functions for quick API responses and stateful agents that maintain persistent memory across interactions. This eliminates the need to parse conversation histories, rebuild context from scratch, or lose state when errors occur.

Modus provides a complete toolkit for building intelligent applications:

  • Functions: Stateless operations that automatically become shareable skills via auto-generated APIs
  • Agents: Stateful entities with short-term and long-term memory that coordinate models, tools, and data
  • Models: Domain-specific AI models with the ability to easily swap in different providers or versions
  • Knowledge Graphs: Organizational memory that scales context across multi-agent architectures

Built-in observability provides automatic inference logging and tracing, while secure-by-default authorization ensures risk-appropriate access to tools and data. Following modern best practices for AI-native architectures, Modus implements principles from the 12-factor agentic app methodology for maintainable, scalable intelligent systems.

You can run Modus locally for development or deploy it in seconds to Hypermode for production.

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What is Modus good for?

Modus is designed for building applications where AI is at its core capability. It supports sub-second response times for stateless operations and long-running, autonomous workflows that maintain state over time.

Beyond demo prompt apps: we’ve all built apps with prompts and AI tool integrations. When you’re ready to take your project to the next level, Modus serves as your AI component in the stack. Modus can sit right alongside your existing app, handling the intelligent workflows while your main app focuses on what it does best.

Both functions and agents can be deployed in the same app, allowing you to choose the right abstraction for each use case.

For more inspiration, check out the Modus recipes.

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Where to next?

Quickstart

Build your first Modus app in minutes with our quickstart guide

What is a Function?

Learn about stateless functions for APIs and data processing

What is an Agent?

Discover stateful agents that maintain memory across interactions

What about knowledge graphs?

Build intelligence networks with persistent institutional memory