{
  "openapi": "3.1.0",
  "info": {
    "title": "digichat",
    "version": "0.9.3",
    "description": "digichat Next.js BFF — stable HTTP routes for health, chat, conversations, and Auth.js. This spec is authored (not FastAPI-generated). Path existence is checked in tests/contracts/test_digichat_openapi_paths.py."
  },
  "tags": [
    {
      "name": "health",
      "description": "Liveness"
    },
    {
      "name": "chat",
      "description": "Chat completions via BFF"
    },
    {
      "name": "conversations",
      "description": "Persisted conversation CRUD"
    },
    {
      "name": "auth",
      "description": "Auth.js handlers"
    },
    {
      "name": "ecosystem",
      "description": "Embed / ecosystem config"
    }
  ],
  "paths": {
    "/api/health": {
      "get": {
        "tags": [
          "health"
        ],
        "summary": "Liveness probe",
        "operationId": "digichatHealth",
        "responses": {
          "200": {
            "description": "Service is up",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "ok"
                  ]
                },
                "example": {
                  "ok": true
                }
              }
            }
          }
        }
      }
    },
    "/api/chat": {
      "post": {
        "tags": [
          "chat"
        ],
        "summary": "Chat (streaming / agentic)",
        "operationId": "digichatChat",
        "description": "BFF chat endpoint. Docker installs authenticate via NextAuth session and exchange a digikey BFF JWT for digigraph. Public Pages Function installs may be auth-free and rate-limited.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": [
                  "messages"
                ],
                "properties": {
                  "messages": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "role": {
                          "type": "string"
                        },
                        "content": {
                          "type": "string"
                        }
                      }
                    }
                  },
                  "model": {
                    "type": "string",
                    "description": "Optional model id"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Chat response or SSE stream"
          },
          "401": {
            "description": "Unauthenticated (Docker BFF when auth required)"
          },
          "429": {
            "description": "Rate limited"
          }
        }
      }
    },
    "/api/conversations": {
      "get": {
        "tags": [
          "conversations"
        ],
        "summary": "List conversations",
        "operationId": "listConversations",
        "responses": {
          "200": {
            "description": "Conversation list"
          },
          "401": {
            "description": "Unauthenticated"
          }
        }
      },
      "post": {
        "tags": [
          "conversations"
        ],
        "summary": "Create conversation",
        "operationId": "createConversation",
        "responses": {
          "200": {
            "description": "Created conversation"
          },
          "401": {
            "description": "Unauthenticated"
          }
        }
      }
    },
    "/api/conversations/{id}": {
      "get": {
        "tags": [
          "conversations"
        ],
        "summary": "Get conversation",
        "operationId": "getConversation",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Conversation detail"
          },
          "401": {
            "description": "Unauthenticated"
          },
          "404": {
            "description": "Not found"
          }
        }
      },
      "delete": {
        "tags": [
          "conversations"
        ],
        "summary": "Delete conversation",
        "operationId": "deleteConversation",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Deleted"
          },
          "401": {
            "description": "Unauthenticated"
          },
          "404": {
            "description": "Not found"
          }
        }
      }
    },
    "/api/auth/{nextauth}": {
      "get": {
        "tags": [
          "auth"
        ],
        "summary": "Auth.js handler (GET)",
        "operationId": "authJsGet",
        "parameters": [
          {
            "name": "nextauth",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            },
            "description": "Auth.js catch-all segment"
          }
        ],
        "responses": {
          "200": {
            "description": "Auth.js response"
          }
        }
      },
      "post": {
        "tags": [
          "auth"
        ],
        "summary": "Auth.js handler (POST)",
        "operationId": "authJsPost",
        "parameters": [
          {
            "name": "nextauth",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Auth.js response"
          }
        }
      }
    },
    "/api/ecosystem/config": {
      "get": {
        "tags": [
          "ecosystem"
        ],
        "summary": "Ecosystem config for UI",
        "operationId": "ecosystemConfig",
        "responses": {
          "200": {
            "description": "Public-ish config blob for the chat shell"
          }
        }
      }
    },
    "/api/v1/chat": {
      "post": {
        "tags": [
          "chat"
        ],
        "summary": "OpenAI-compatible chat proxy (v1)",
        "operationId": "digichatV1Chat",
        "responses": {
          "200": {
            "description": "Upstream chat completion / stream"
          },
          "401": {
            "description": "Unauthenticated"
          }
        }
      }
    }
  }
}