langchain-middleware-patterns

Build composable middleware for LangChain 1.0 chains and LangGraph 1.0 agents — PII redaction, caching, retry, token budgets, guardrails — with ORDERING rules that avoid cache-key leakage and double-counting. Use when adding cross-cutting behavior, hardening against prompt injection, enforcing per-tenant budgets, or debugging cache-poisoning incidents. Trig…

Independent GitHub snapshot · Automated classification · Original documentation governs