modelcontextprotocol · ihrpr · Sep 1, 2025 · Sep 1, 2025
diff --git a/examples/servers/simple-resource/mcp_simple_resource/server.py b/examples/servers/simple-resource/mcp_simple_resource/server.py
@@ -2,6 +2,7 @@
 import click
 import mcp.types as types
 from mcp.server.lowlevel import Server
+from mcp.server.lowlevel.helper_types import ReadResourceContents
 from pydantic import AnyUrl, FileUrl
 from starlette.requests import Request

@@ -46,15 +47,15 @@ async def list_resources() -> list[types.Resource]:
        ]

    @app.read_resource()
-    async def read_resource(uri: AnyUrl) -> str | bytes:
+    async def read_resource(uri: AnyUrl):
        if uri.path is None:
            raise ValueError(f"Invalid resource path: {uri}")
        name = uri.path.replace(".txt", "").lstrip("/")

        if name not in SAMPLE_RESOURCES:
            raise ValueError(f"Unknown resource: {uri}")

-        return SAMPLE_RESOURCES[name]["content"]
+        return [ReadResourceContents(content=SAMPLE_RESOURCES[name]["content"], mime_type="text/plain")]

    if transport == "sse":
        from mcp.server.sse import SseServerTransport