Langchain Middleware Python Packages

langchain-fathom

LangChain agent middleware that flags the step where an agent contradicts its own earlier action. Deterministic, no model calls, fits tests and CI.

langchain-right-rudder

LangChain agent middleware that flags the step where an agent contradicts its own earlier action. Deterministic, no model calls, fits tests and CI.

langchain-task-steering

Task-steering — Implicit state-machine middleware for LangChain v1 agents. Ordered task pipelines with per-task tool scoping, dynamic prompt injection, and composable completion validation.

langchain-scrubkit

LangChain middleware that cleans tool outputs: fixes broken encoding, HTML and invisible characters before your agent ever reads them.