diff --git a/pkg/agent/loop.go b/pkg/agent/loop.go
index abf32e2ad..7ce858963 100644
--- a/pkg/agent/loop.go
+++ b/pkg/agent/loop.go
@@ -179,6 +179,8 @@ func registerSharedTools(
 		// Spawn tool with allowlist checker
 		subagentManager := tools.NewSubagentManager(provider, agent.Model, agent.Workspace, msgBus)
 		subagentManager.SetLLMOptions(agent.MaxTokens, agent.Temperature)
+		// CRITICAL: Share the same tool registry with subagent so it has access to all tools
+		subagentManager.SetTools(agent.Tools)
 		spawnTool := tools.NewSpawnTool(subagentManager)
 		currentAgentID := agentID
 		spawnTool.SetAllowlistChecker(func(targetAgentID string) bool {