> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-opensw-1775576783-5997353.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Middleware integrations

> Integrate with middleware using LangChain Python.

Browse available middleware for different providers or contribute your own to the ecosystem. Learn more about how middleware works in the [middleware overview](/oss/python/langchain/middleware/overview) and how to use middleware with Deep Agents in the [Deep Agents docs](/oss/python/deepagents/customization#middleware).

## Share your middleware

Middleware enables context engineering, harness customization, and runtime safety controls. It is a useful extension point in LangChain and we love highlighting what the community builds with it:

<CardGroup cols={2}>
  <Card title="Add an official integration" icon="package" href="/oss/python/contributing/implement-langchain#middleware">
    Follow the contributing guide to build and publish a middleware package.
  </Card>

  <Card title="Share a community middleware" icon="users" href="https://github.com/langchain-ai/docs">
    Open a PR to the docs repo to add your middleware to the table below.
  </Card>
</CardGroup>

## Official integrations

| Provider                                                   | Middleware available                                            | Source                                                                                                    |
| ---------------------------------------------------------- | --------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| [Anthropic](/oss/python/integrations/middleware/anthropic) | Prompt caching, bash tool, text editor, memory, and file search | [`langchain-ai/langchain`](https://github.com/langchain-ai/langchain/tree/master/libs/partners/anthropic) |
| [AWS](/oss/python/integrations/middleware/aws)             | Prompt caching                                                  | [`langchain-ai/langchain-aws`](https://github.com/langchain-ai/langchain-aws/tree/main/libs/aws)          |
| [OpenAI](/oss/python/integrations/middleware/openai)       | Content moderation                                              | [`langchain-ai/langchain`](https://github.com/langchain-ai/langchain/tree/master/libs/partners/openai)    |

## Community integrations

| Middleware                                                                              | Description                                                                                                      | Source                                                                                                                    |
| --------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- |
| [Cisco AI Defense](https://github.com/cisco-ai-defense/ai-defense-langchain-middleware) | Runtime security inspection                                                                                      | [`cisco-ai-defense/ai-defense-langchain-middleware`](https://github.com/cisco-ai-defense/ai-defense-langchain-middleware) |
| [compact-middleware](https://github.com/emanueleielo/compact-middleware)                | Claude Code's compaction engine as LangChain middleware. Multi-level context compaction for long-running agents. | [`emanueleielo/compact-middleware`](https://github.com/emanueleielo/compact-middleware)                                   |
| [langchain-collapse](https://github.com/johanity/langchain-collapse)                    | Preventive context management. Collapses consecutive tool-call groups before they fill the context window.       | [`johanity/langchain-collapse`](https://github.com/johanity/langchain-collapse)                                           |

***

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