langgraph-gaussdb-fastapi 0.2.0

A FastAPI LangGraph-compatible server backed by GaussDB.

LangGraph GaussDB FastAPI

A FastAPI server that implements key LangGraph Platform-compatible endpoints with async GaussDB persistence.

Install

python -m pip install langgraph-gaussdb-fastapi

To run the packaged Chainlit prototype too:

python -m pip install "langgraph-gaussdb-fastapi[chainlit]"

Run

Set the database connection with environment variables, then start the server:

LG_DB_HOST=127.0.0.1 \
LG_DB_USER=remote_user \
LG_DB_PASSWORD=your-password \
LG_DB_NAME=langgraph \
langgraph-gaussdb-fastapi

The default graph config now comes from the packaged server_config.json. You can still override it with LG_GRAPH_CONFIG.

{
  "dependencies": [],
  "graphs": {
    "echo": "graph.example_graph:graph",
    "qwen_tools": "graph.qwen_tools_graph:graph"
  }
}

Health checks are available at / and /ok.

Chainlit

The distribution includes the Chainlit prototype under the package namespace plus a launcher script:

LANGGRAPH_SERVER_URL=http://127.0.0.1:2026 \
langgraph-gaussdb-chainlit --headless --host 0.0.0.0 --port 8010

You can also run the packaged smoke test directly:

python -m langgraph_gaussdb_fastapi.chainlit_app.smoke_test