diff --git a/ui/src/adapters/hermes-local/config-fields.tsx b/ui/src/adapters/hermes-local/config-fields.tsx
index 62b85fea..69ab93fe 100644
--- a/ui/src/adapters/hermes-local/config-fields.tsx
+++ b/ui/src/adapters/hermes-local/config-fields.tsx
@@ -1,49 +1,128 @@
-import type { AdapterConfigFieldsProps } from "../types";
-import {
-  Field,
-  DraftInput,
-} from "../../components/agent-config-primitives";
-import { ChoosePathButton } from "../../components/PathInstructionsModal";
-
-const inputClass =
-  "w-full rounded-md border border-border px-2.5 py-1.5 bg-transparent outline-none text-sm font-mono placeholder:text-muted-foreground/40";
-const instructionsFileHint =
-  "Absolute path to a markdown file (e.g. AGENTS.md) that defines this agent's behavior. Injected into the system prompt at runtime.";
-
-export function HermesLocalConfigFields({
-  isCreate,
-  values,
-  set,
-  config,
-  eff,
-  mark,
-  hideInstructionsFile,
-}: AdapterConfigFieldsProps) {
-  if (hideInstructionsFile) return null;
-  return (
-    <Field label="Agent instructions file" hint={instructionsFileHint}>
-      <div className="flex items-center gap-2">
-        <DraftInput
-          value={
-            isCreate
-              ? values!.instructionsFilePath ?? ""
-              : eff(
-                  "adapterConfig",
-                  "instructionsFilePath",
-                  String(config.instructionsFilePath ?? ""),
-                )
-          }
-          onCommit={(v) =>
-            isCreate
-              ? set!({ instructionsFilePath: v })
-              : mark("adapterConfig", "instructionsFilePath", v || undefined)
-          }
-          immediate
-          className={inputClass}
-          placeholder="/absolute/path/to/AGENTS.md"
-        />
-        <ChoosePathButton />
-      </div>
-    </Field>
-  );
-}
+import type { AdapterConfigFieldsProps } from "../types";
+import {
+  Field,
+  DraftInput,
+} from "../../components/agent-config-primitives";
+import { ChoosePathButton } from "../../components/PathInstructionsModal";
+
+const inputClass =
+  "w-full rounded-md border border-border px-2.5 py-1.5 bg-transparent outline-none text-sm font-mono placeholder:text-muted-foreground/40";
+const instructionsFileHint =
+  "Absolute path to a markdown file (e.g. AGENTS.md) that defines this agent's behavior. Injected into the system prompt at runtime.";
+
+export function HermesLocalConfigFields({
+  isCreate,
+  values,
+  set,
+  config,
+  eff,
+  mark,
+  hideInstructionsFile,
+}: AdapterConfigFieldsProps) {
+  return (
+    <>
+      {!hideInstructionsFile && (
+        <Field label="Agent instructions file" hint={instructionsFileHint}>
+          <div className="flex items-center gap-2">
+            <DraftInput
+              value={
+                isCreate
+                  ? values!.instructionsFilePath ?? ""
+                  : eff(
+                      "adapterConfig",
+                      "instructionsFilePath",
+                      String(config.instructionsFilePath ?? ""),
+                    )
+              }
+              onCommit={(v) =>
+                isCreate
+                  ? set!({ instructionsFilePath: v })
+                  : mark("adapterConfig", "instructionsFilePath", v || undefined)
+              }
+              immediate
+              className={inputClass}
+              placeholder="/absolute/path/to/AGENTS.md"
+            />
+            <ChoosePathButton />
+          </div>
+        </Field>
+      )}
+      <Field
+        label="Model"
+        hint="Provider/model format (e.g. anthropic/claude-sonnet-4). Leave blank to use Hermes default."
+      >
+        <DraftInput
+          value={
+            isCreate
+              ? values!.model ?? ""
+              : eff("adapterConfig", "model", String(config.model ?? ""))
+          }
+          onCommit={(v) =>
+            isCreate
+              ? set!({ model: v })
+              : mark("adapterConfig", "model", v || undefined)
+          }
+          immediate
+          className={inputClass}
+          placeholder="anthropic/claude-sonnet-4"
+        />
+      </Field>
+      <Field
+        label="Toolsets"
+        hint="Comma-separated toolset names (e.g. terminal,file,web). Leave blank for defaults."
+      >
+        <DraftInput
+          value={
+            isCreate
+              ? values!.extraArgs ?? ""
+              : eff("adapterConfig", "toolsets", String(config.toolsets ?? ""))
+          }
+          onCommit={(v) =>
+            isCreate
+              ? set!({ extraArgs: v })
+              : mark("adapterConfig", "toolsets", v || undefined)
+          }
+          immediate
+          className={inputClass}
+          placeholder="terminal,file,web"
+        />
+      </Field>
+      {!isCreate && (
+        <>
+          <Field
+            label="Persist session"
+            hint="Keep conversation history between heartbeat runs."
+          >
+            <label className="flex items-center gap-2 cursor-pointer">
+              <input
+                type="checkbox"
+                className="h-4 w-4 rounded border-border accent-primary"
+                checked={eff("adapterConfig", "persistSession", config.persistSession !== false)}
+                onChange={(e) =>
+                  mark("adapterConfig", "persistSession", e.target.checked)
+                }
+              />
+              <span className="text-sm text-muted-foreground">Enabled</span>
+            </label>
+          </Field>
+          <Field
+            label="Timeout (seconds)"
+            hint="Maximum execution time per heartbeat run."
+          >
+            <DraftInput
+              value={String(
+                eff("adapterConfig", "timeoutSec", Number(config.timeoutSec ?? 300)),
+              )}
+              onCommit={(v) =>
+                mark("adapterConfig", "timeoutSec", Number(v) || 300)
+              }
+              immediate
+              className={inputClass}
+              placeholder="300"
+            />
+          </Field>
+        </>
+      )}
+    </>
+  );
+}