diff --git a/cron/scheduler.py b/cron/scheduler.py
index e76f67064cf9..9c669e2d7f77 100644
--- a/cron/scheduler.py
+++ b/cron/scheduler.py
@@ -1486,6 +1486,10 @@ def _run_job_impl(job: dict) -> tuple[bool, str, str, Optional[str]]:
             }
             if job.get("base_url"):
                 runtime_kwargs["explicit_base_url"] = job.get("base_url")
+            if job.get("api_key"):
+                runtime_kwargs["explicit_api_key"] = os.path.expandvars(
+                    job.get("api_key", "")
+                )
             runtime = resolve_runtime_provider(**runtime_kwargs)
         except AuthError as auth_exc:
             # Primary provider auth failed — try fallback chain before giving up.
diff --git a/hermes_cli/providers.py b/hermes_cli/providers.py
index 0017004ee089..6790f3bdfb3a 100644
--- a/hermes_cli/providers.py
+++ b/hermes_cli/providers.py
@@ -145,11 +145,13 @@ class HermesOverlay:
     "opencode": HermesOverlay(
         transport="openai_chat",
         is_aggregator=True,
+        extra_env_vars=("OPENCODE_ZEN_API_KEY",),
         base_url_env_var="OPENCODE_ZEN_BASE_URL",
     ),
     "opencode-go": HermesOverlay(
         transport="openai_chat",
         is_aggregator=True,
+        extra_env_vars=("OPENCODE_GO_API_KEY",),
         base_url_env_var="OPENCODE_GO_BASE_URL",
     ),
     "kilo": HermesOverlay(
@@ -162,6 +164,11 @@ class HermesOverlay:
         is_aggregator=True,
         base_url_env_var="HF_BASE_URL",
     ),
+    "gemini": HermesOverlay(
+        transport="openai_chat",
+        extra_env_vars=("GOOGLE_API_KEY", "GEMINI_API_KEY"),
+        base_url_env_var="GEMINI_BASE_URL",
+    ),
     "novita": HermesOverlay(
         transport="openai_chat",
         is_aggregator=True,