Require user LLM credentials

agent.py

@@ -35,11 +35,11 @@ class AgentReviewer(A2AAgent[ReviewerConfig, NoAuth]):
     config_model = ReviewerConfig
     auth_model = NoAuth
     tools_used = ("deepagents", "a2a-pack", "litellm", "microsandbox", "gitea")
-    llm_provisioning = LLMProvisioning.PLATFORM_OR_CALLER_PROVIDED
+    llm_provisioning = LLMProvisioning.PLATFORM
     wants_cp_jwt = True
     pricing = Pricing(
         price_per_call_usd=0.05,
-        caller_pays_llm=False,
+        caller_pays_llm=True,
         notes=(
             "Reads target source via a short-lived, repo-scoped Gitea "
             "token minted on the caller's behalf. Never deploys or writes."
@@ -74,8 +74,8 @@ class AgentReviewer(A2AAgent[ReviewerConfig, NoAuth]):
             return {
                 "error": "llm_credentials_missing",
                 "final": (
-                    "LLM credentials were not available for this review. "
-                    "Hosted reviewer runs should receive a platform LLM grant."
+                    "LLM key required. Add an LLM credential in Settings > "
+                    "LLM credentials before running this review."
                 ),
                 "agent_name": agent_name,
                 "ref": ref,