feat:add simple health endpoint (#42)

Signed-off-by: Akihiko Kuroda <[email protected]>

Author: akihikokuroda

src/maestro_mcp/server.py

@@ -10,6 +10,8 @@
 
 from fastmcp import FastMCP
 from fastmcp.tools.tool import ToolResult
+from starlette.requests import Request
+from starlette.responses import PlainTextResponse
 from pydantic import BaseModel, Field
 
 from ..chunking import ChunkingConfig
@@ -390,6 +392,25 @@ def create_mcp_server() -> FastMCP:
     # Create FastMCP server directly
     app = FastMCP("maestro-vector-db")
 
+    @app.custom_route("/health", methods=["GET"])
+    async def health_check(request: Request) -> PlainTextResponse:
+        if not vector_databases:
+            PlainTextResponse("No vector databases are currently active")
+
+        db_list = []
+        for db_name, db in vector_databases.items():
+            db_list.append(
+                {
+                    "name": db_name,
+                    "type": db.db_type,
+                    "collection": db.collection_name,
+                    "document_count": db.count_documents(),
+                }
+            )
+        return PlainTextResponse(
+            f"Available vector databases:\n{json.dumps(db_list, indent=2)}"
+        )
+
     @app.tool()
     async def create_vector_database_tool(input: CreateVectorDatabaseInput) -> str:
         """Create a new vector database instance."""