# Philosophy

URL: /milo-cli/docs/about/philosophy/
Section: about
Tags: about, philosophy

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Milo starts from one constraint: a typed Python function should safely become a human CLI command, an MCP tool with a truthful JSON Schema, and an llms.txt entry. That leads to a few practical choices: The function signature is the contract. Schema generation has one source of truth. Reducers stay pure and deterministic. Protocol code stays sans-I/O until the transport boundary. Runtime state is explicit enough to test, replay, and debug. Milo keeps the default install small: pure Python plus kida-templates.

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Metadata:
- Author: lbliii
- Word Count: 81
- Reading Time: 1 minutes