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What is Modus?

Modus is an open source, serverless framework for building functions and APIs, powered by WebAssembly. You write your app logic in Go or AssemblyScript, and Modus provides additional features to easily integrate models, data, and external services. To build apps that are thoughtful, fun, and effective, we often need to integrate models in different forms, whether generative large language models or classical machine/deep learning models. Your app might be a simple create, read, update, and delete (CRUD) function that has a single model to identify similar entries. Or, it could be a complex agentic reasoning system that chains dozens of models and data sources together. Modus creates a way of working with models that scales with your needs. Modus exists to make it easier for you to build the apps of your dreams.
Modus is a multi-language framework. It currently includes support for Go and AssemblyScript, a WebAssembly compatible TypeScript-like language. Additional language support is in development.

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What is Modus good for?

We designed Modus primarily as a general-purpose app framework, it just happens to treat models as a first-class component. With Modus you can use models, as appropriate, without additional complexity. However, Modus is best for applications that require sub-second response times. We’ve made trade-offs to optimize for speed and simplicity.

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Main features

A few of the core Modus features include:
FeatureDescription
Multi-LanguageWrite functions in Go and AssemblyScript, with additional language support in development
Auto-Generated APIA secure API is automatically generated from your function signatures
Model IntegrationConnect and invoke AI models from different providers, without learning a new SDK
SearchAdd natural language search and recommendations with integrated vector embeddings
AuthenticationSecure your API endpoints with minimal configuration
WebAssembly RuntimeSmall and portable execution engine for deployment across server, edge, and desktop computes