BoundaryML/baml

Project overview

baml addresses a core reliability gap in LLM agents by persisting types at runtime with no 'any' type and providing statically analyzed, typed errors — a combination that directly targets the mistake patterns common in agent development.

Project type

Infrastructure

Use cases

Automation

Deployment

Refer to project documentation

License

Apache-2.0

Best for

• Developers and AI engineers who want a statically typed language for building LLM agents with fewer runtime type errors.
• Teams already working in Python, TypeScript, or Go who need a type-safe agent language that interoperates with their existing stack.

Key capabilities

• Statically typed like Rust, with typed errors and static analysis to help agents make fewer mistakes.
• Types persist at runtime, eliminating the 'any' type for safer agent execution.
• Call baml standalone or from Python, TypeScript, Go, and other languages.
• Provides concurrency features similar to Go.

Getting started

• baml is easy to set up through simple CLI commands. A typical first success path is: brew install boundaryml/tap/baml, baml agent install, baml init, and baml ide install --code.

Evidence and sources

• GitHub project description: The programming language for agents
• README: BAML is the programming language for agents. [](https://pypi.org/project/baml-py/) [Homepag…
• README: ```bash brew install boundaryml/tap/baml baml agent install baml init baml ide install --code ```
• README: We're hiring software engineers who love Rust.
• README: https://pypi.org/project/baml-py/

Reviewed at: 2026-07-16T19:15:50Z