diff --git a/SPARC/api.py b/SPARC/api.py
index cf76493..482caab 100644
--- a/SPARC/api.py
+++ b/SPARC/api.py
@@ -161,6 +161,7 @@ app = FastAPI(
     description="Semiconductor Patent & Analytics Report Core - Patent portfolio analysis using AI",
     version="1.0.0",
     lifespan=lifespan,
+    root_path=config.root_path,
 )
 
 # Add CORS middleware for React frontend
diff --git a/SPARC/config.py b/SPARC/config.py
index 11a12a2..1612b75 100644
--- a/SPARC/config.py
+++ b/SPARC/config.py
@@ -25,3 +25,7 @@ use_cache = os.getenv("USE_CACHE", "true").lower() in ("true", "1", "yes")
 # Legacy compatibility - USE_DATABASE is deprecated, database is always used
 # This variable is kept for backwards compatibility but has no effect
 use_database = os.getenv("USE_DATABASE", "false").lower() in ("true", "1", "yes")
+
+# Root path for running behind a reverse proxy (e.g., "/api" when served at /api/)
+# This ensures OpenAPI docs work correctly when accessed via the proxy
+root_path = os.getenv("ROOT_PATH", "")
diff --git a/docker-compose.yml b/docker-compose.yml
index 7aa4e63..7bbdbe2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -38,6 +38,7 @@ services:
       DATABASE_URL: postgresql://postgres:postgres@postgres:5432/sparc
       USE_CACHE: "true"
       JWT_SECRET: ${JWT_SECRET:-sparc-secret-key-change-in-production}
+      ROOT_PATH: /api
     ports:
       - "8000:8000"
     depends_on: