diff --git a/mcp/src/openisle_mcp/server.py b/mcp/src/openisle_mcp/server.py
index e93652c89..daa503eae 100644
--- a/mcp/src/openisle_mcp/server.py
+++ b/mcp/src/openisle_mcp/server.py
@@ -139,6 +139,25 @@ app = FastMCP(
 )
 
 
+@app.tool(
+    name="set_token",
+    description=(
+        "Set JWT token for the current session to be reused by other tools."
+    ),
+)
+async def set_token(
+    token: Annotated[
+        str,
+        PydanticField(description="JWT token string."),
+    ],
+    ctx: Context | None = None,
+) -> str:
+    """Persist a JWT token for the active MCP session."""
+
+    session_token_manager.resolve(ctx, token)
+    return "Token stored successfully."
+
+
 @app.tool(
     name="search",
     description="Perform a global search across OpenIsle resources.",