Atomic Agents
Open-source framework for building modular AI agents
Quick Answer
Atomic Agents is a lightweight, MIT-licensed Python framework for building modular agentic AI pipelines, built on Instructor and Pydantic with validated input/output schemas. It works with OpenAI, Anthropic, Gemini, Mistral, Cohere, Groq, Ollama and any OpenAI-compatible API. Free and open source (pip install atomic-agents).
Atomic Agents is an extremely lightweight and modular open-source framework for building agentic AI pipelines and applications. Built on Instructor and Pydantic, it composes single-purpose, reusable agents, tools, and context providers with validated input/output schemas. It is MIT-licensed and works with OpenAI, Anthropic, Gemini, Mistral, Cohere, Groq, Ollama, and any OpenAI-compatible API.
Atomic Agents is built around atomicity: each agent has explicit input and output schemas, so one agent's output schema can match the next agent's input schema, letting you chain and swap components while keeping them modular and reusable.
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· 6.4 avgWhat it can do, per category it works in · showing 9 of 10 tasks scoring 5+
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Frequently Asked Questions
What can Atomic Agents do?
Atomic Agents can: Input and output schemas with Pydantic validation, Configurable system prompts per agent, Conversation history storage, Context providers that inject dynamic context at runtime. Best for: Python developers composing single-purpose, reusable agents.
How much does Atomic Agents cost?
Atomic Agents is open source and free to self-host. Cloud hosting options may have separate pricing.
Is Atomic Agents free?
Yes, Atomic Agents is open source and free to self-host. Managed hosting may carry separate costs.
What makes Atomic Agents unique?
Atomic Agents is built around atomicity: each agent has explicit input and output schemas, so one agent's output schema can match the next agent's input schema, letting you chain and swap components while keeping them modular and reusable.
Does Atomic Agents have an API?
Yes, Atomic Agents offers a public API for developers to integrate its capabilities into custom applications and workflows.
What platforms does Atomic Agents support?
Atomic Agents is available on API and CLI.
What languages does Atomic Agents support?
Atomic Agents supports English.
Does Atomic Agents work offline?
No, Atomic Agents requires an active internet connection to function.
Who is Atomic Agents for?
Atomic Agents is designed for Python developers composing single-purpose, reusable agents.