chatdev-memorysync

MemorySync memory store for ChatDev 2.0 (DevAll) — OpenBMB's zero-code multi-agent platform.

One pip install adds type: memorysync to ChatDev's memory registry: usable from workflow YAML and the web console's store-type dropdown, no code changes to ChatDev required.

# inside your ChatDev checkout's environment
uv pip install chatdev-memorysync     # or: pip install chatdev-memorysync

Activation is automatic (a .pth hook registers the store whenever ChatDev's modules are importable, and silently no-ops anywhere else). The explicit alternative:

import chatdev_memorysync
chatdev_memorysync.register()

Workflow YAML

graph:
  nodes:
    - id: writer
      type: agent
      config:
        # ... model config ...
        memories:
          - name: user_memory
            top_k: 5
            retrieve_stage: [gen]
            read: true
            write: true
  memory:
    - name: user_memory
      type: memorysync
      config:
        api_key: ${MEMORYSYNC_API_KEY}
        user_id: customer-42        # REQUIRED — who these memories belong to
        session_id: support         # optional transcript scope

Retrieved memories arrive in the standard ===== Related Memories ===== block ChatDev injects into agent prompts.

Why this instead of the in-tree Mem0 store?

ChatDev ships a mem0 store in its repo. Verified against its source:

Memories stored here are recallable from every other MemorySync surface (LangChain, the CLI, voice agents, Dify…) and vice versa.

Configuration

Per-agent knobs (top_k, similarity_threshold, read, write, retrieve_stage) come from ChatDev's own memories: attachment config and are honored — including similarity_threshold filtering on real scores.

Tests

git clone --depth 1 https://github.com/OpenBMB/ChatDev.git chatdev
pip install -e . pytest pydantic openai pyyaml tenacity numpy faiss-cpu fastmcp jinja2
pytest tests -q   # 24 checks against the real ChatDev 2.0 modules

The suite drives ChatDev's real config parser, registry, MemoryFactory, and MemoryManager — and reproduces each in-tree Mem0 store bug as a regression test.

License

MIT © MemorySync.