# H3 Utils

H3 is a composable framework. Instead of providing a big core, you start with a lightweight [H3](/guide/api/h3) instance and for every functionality, there is either a built-in utility or you can make yours.

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Utilities for incoming request.
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Utilities for preparing and sending response.
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Cookie utilities.
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Security utilities.
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Proxy utilities.
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MCP related utilities.
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More Utilities.
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Community made utilities.
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