> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mellea.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# mellea.stdlib

> The mellea standard library of components, sessions, and sampling strategies.

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The mellea standard library of components, sessions, and sampling strategies.

This package provides the high-level building blocks for writing generative programs
with mellea. It contains ready-to-use [`Component`](../core/base#class-component) types (`Instruction`,
`Message`, `Document`, `Intrinsic`, `SimpleComponent`, and more), context
implementations (`ChatContext`, `SimpleContext`), sampling strategies (rejection
sampling, budget forcing), session management via `MelleaSession`, and the
`@mify` decorator for turning ordinary Python objects into components. Import from
the sub-packages — `mellea.stdlib.components`, `mellea.stdlib.sampling`, and
`mellea.stdlib.session` — for day-to-day use.

Streaming chunking strategies (for use with streaming validation) are available at
`mellea.stdlib.chunking` and re-exported here for convenience.  The core streaming
orchestration primitive :func:`~mellea.stdlib.streaming.stream_with_chunking` and
its result type :class:`~mellea.stdlib.streaming.StreamChunkingResult` are also
re-exported here, alongside the full :class:`~mellea.stdlib.streaming.StreamEvent`
vocabulary for typed event observation.