Get Graph Overview

Lightweight full-graph endpoint for overview visualization.

Returns all node types (Entity, Memory, Source, Thread) with minimal data (no content, no metadata, no messages) for fast full-graph rendering.

curl -X GET "http://127.0.0.1:14242/graph/overview"

null

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}