Architecture Overview (Guide)

This guide helps you choose crates quickly by what you are building.

ReAct Agent Workflows

Use:

• wesichain-core
• wesichain-llm
• wesichain-graph

Optional:

• wesichain-checkpoint-sqlite / wesichain-checkpoint-postgres / wesichain-checkpoint-redis
• wesichain-memory

Retrieval + RAG Workflows

Use:

• wesichain-rag
• wesichain-retrieval
• wesichain-embeddings

Vector DB options:

• wesichain-pinecone
• wesichain-qdrant
• wesichain-weaviate
• wesichain-chroma

Migration-Oriented Workflows

Use:

• wesichain-compat

Pair with core graph crates while porting incrementally.

Runtime Evolution

• wesichain-agent contains the FSM-style v0.3 runtime track.
• For current production graph orchestration, wesichain-graph remains the primary entry point.

See Also

• Architecture Overview
• Crate Selector