diff --git a/apps/server/src/git/Layers/GitCore.test.ts b/apps/server/src/git/Layers/GitCore.test.ts
index 6c98229e8..6b5bc0232 100644
--- a/apps/server/src/git/Layers/GitCore.test.ts
+++ b/apps/server/src/git/Layers/GitCore.test.ts
@@ -98,7 +98,7 @@ const makeIsolatedGitCore = (gitService: GitServiceShape) =>
       status: (input) => core.status(input),
       statusDetails: (cwd) => core.statusDetails(cwd),
       prepareCommitContext: (cwd, filePaths?) => core.prepareCommitContext(cwd, filePaths),
-      commit: (cwd, subject, body) => core.commit(cwd, subject, body),
+      commit: (cwd, subject, body, extraArgs?) => core.commit(cwd, subject, body, extraArgs),
       pushCurrentBranch: (cwd, fallbackBranch) => core.pushCurrentBranch(cwd, fallbackBranch),
       pullCurrentBranch: (cwd) => core.pullCurrentBranch(cwd),
       readRangeContext: (cwd, baseBranch) => core.readRangeContext(cwd, baseBranch),
diff --git a/apps/server/src/git/Layers/GitCore.ts b/apps/server/src/git/Layers/GitCore.ts
index f5b9168ab..9070d295f 100644
--- a/apps/server/src/git/Layers/GitCore.ts
+++ b/apps/server/src/git/Layers/GitCore.ts
@@ -804,9 +804,9 @@ const makeGitCore = Effect.gen(function* () {
       };
     });
 
-  const commit: GitCoreShape["commit"] = (cwd, subject, body) =>
+  const commit: GitCoreShape["commit"] = (cwd, subject, body, extraArgs = []) =>
     Effect.gen(function* () {
-      const args = ["commit", "-m", subject];
+      const args = ["commit", ...extraArgs, "-m", subject];
       const trimmedBody = body.trim();
       if (trimmedBody.length > 0) {
         args.push("-m", trimmedBody);
diff --git a/apps/server/src/git/Layers/GitManager.ts b/apps/server/src/git/Layers/GitManager.ts
index 835779517..2b248d3c6 100644
--- a/apps/server/src/git/Layers/GitManager.ts
+++ b/apps/server/src/git/Layers/GitManager.ts
@@ -207,6 +207,13 @@ interface CommitAndBranchSuggestion {
   commitMessage: string;
 }
 
+function tokenizeCommitFlags(rawFlags?: string): string[] {
+  return (rawFlags ?? "")
+    .trim()
+    .split(/\s+/g)
+    .filter((value) => value.length > 0);
+}
+
 function formatCommitMessage(subject: string, body: string): string {
   const trimmedBody = body.trim();
   if (trimmedBody.length === 0) {
@@ -680,6 +687,7 @@ export const makeGitManager = Effect.gen(function* () {
     cwd: string,
     branch: string | null,
     commitMessage?: string,
+    commitFlags?: string,
     preResolvedSuggestion?: CommitAndBranchSuggestion,
     filePaths?: readonly string[],
   ) =>
@@ -696,7 +704,12 @@ export const makeGitManager = Effect.gen(function* () {
         return { status: "skipped_no_changes" as const };
       }
 
-      const { commitSha } = yield* gitCore.commit(cwd, suggestion.subject, suggestion.body);
+      const { commitSha } = yield* gitCore.commit(
+        cwd,
+        suggestion.subject,
+        suggestion.body,
+        tokenizeCommitFlags(commitFlags),
+      );
       return {
         status: "created" as const,
         commitSha,
@@ -1042,6 +1055,7 @@ export const makeGitManager = Effect.gen(function* () {
         input.cwd,
         currentBranch,
         commitMessageForStep,
+        input.commitFlags,
         preResolvedCommitSuggestion,
         input.filePaths,
       );
diff --git a/apps/server/src/git/Services/GitCore.ts b/apps/server/src/git/Services/GitCore.ts
index 879927934..6234692de 100644
--- a/apps/server/src/git/Services/GitCore.ts
+++ b/apps/server/src/git/Services/GitCore.ts
@@ -111,6 +111,7 @@ export interface GitCoreShape {
     cwd: string,
     subject: string,
     body: string,
+    extraArgs?: readonly string[],
   ) => Effect.Effect<{ commitSha: string }, GitCommandError>;
 
   /**
diff --git a/apps/web/public/mockServiceWorker.js b/apps/web/public/mockServiceWorker.js
index 85e901012..daa58d0f1 100644
--- a/apps/web/public/mockServiceWorker.js
+++ b/apps/web/public/mockServiceWorker.js
@@ -7,7 +7,7 @@
  * - Please do NOT modify this file.
  */
 
-const PACKAGE_VERSION = '2.12.9'
+const PACKAGE_VERSION = '2.12.10'
 const INTEGRITY_CHECKSUM = '4db4a41e972cec1b64cc569c66952d82'
 const IS_MOCKED_RESPONSE = Symbol('isMockedResponse')
 const activeClientIds = new Set()
diff --git a/apps/web/src/appSettings.ts b/apps/web/src/appSettings.ts
index e5018e0bf..efe04ee7f 100644
--- a/apps/web/src/appSettings.ts
+++ b/apps/web/src/appSettings.ts
@@ -18,6 +18,9 @@ const AppSettingsSchema = Schema.Struct({
   codexHomePath: Schema.String.check(Schema.isMaxLength(4096)).pipe(
     Schema.withConstructorDefault(() => Option.some("")),
   ),
+  gitCommitFlags: Schema.String.check(Schema.isMaxLength(4096)).pipe(
+    Schema.withConstructorDefault(() => Option.some("")),
+  ),
   confirmThreadDelete: Schema.Boolean.pipe(Schema.withConstructorDefault(() => Option.some(true))),
   enableAssistantStreaming: Schema.Boolean.pipe(
     Schema.withConstructorDefault(() => Option.some(false)),
diff --git a/apps/web/src/components/GitActionsControl.tsx b/apps/web/src/components/GitActionsControl.tsx
index e4fad02af..d86c607a8 100644
--- a/apps/web/src/components/GitActionsControl.tsx
+++ b/apps/web/src/components/GitActionsControl.tsx
@@ -32,6 +32,7 @@ import { Popover, PopoverPopup, PopoverTrigger } from "~/components/ui/popover";
 import { ScrollArea } from "~/components/ui/scroll-area";
 import { Textarea } from "~/components/ui/textarea";
 import { toastManager } from "~/components/ui/toast";
+import { useAppSettings } from "~/appSettings";
 import { openInPreferredEditor } from "~/editorPreferences";
 import {
   gitBranchesQueryOptions,
@@ -158,6 +159,7 @@ export default function GitActionsControl({ gitCwd, activeThreadId }: GitActions
     () => (activeThreadId ? { threadId: activeThreadId } : undefined),
     [activeThreadId],
   );
+  const { settings } = useAppSettings();
   const queryClient = useQueryClient();
   const [isCommitDialogOpen, setIsCommitDialogOpen] = useState(false);
   const [dialogCommitMessage, setDialogCommitMessage] = useState("");
@@ -199,6 +201,7 @@ export default function GitActionsControl({ gitCwd, activeThreadId }: GitActions
     useIsMutating({ mutationKey: gitMutationKeys.runStackedAction(gitCwd) }) > 0;
   const isPullRunning = useIsMutating({ mutationKey: gitMutationKeys.pull(gitCwd) }) > 0;
   const isGitActionRunning = isRunStackedActionRunning || isPullRunning;
+  const configuredCommitFlags = settings.gitCommitFlags.trim();
   const isDefaultBranch = useMemo(() => {
     const branchName = gitStatusForActions?.branch;
     if (!branchName) return false;
@@ -349,6 +352,7 @@ export default function GitActionsControl({ gitCwd, activeThreadId }: GitActions
       const promise = runImmediateGitActionMutation.mutateAsync({
         action,
         ...(commitMessage ? { commitMessage } : {}),
+        ...(configuredCommitFlags ? { commitFlags: configuredCommitFlags } : {}),
         ...(featureBranch ? { featureBranch } : {}),
         ...(filePaths ? { filePaths } : {}),
       });
@@ -442,6 +446,7 @@ export default function GitActionsControl({ gitCwd, activeThreadId }: GitActions
     },
 
     [
+      configuredCommitFlags,
       isDefaultBranch,
       runImmediateGitActionMutation,
       setPendingDefaultBranchAction,
diff --git a/apps/web/src/lib/gitReactQuery.ts b/apps/web/src/lib/gitReactQuery.ts
index 9b5fe7731..180b170a1 100644
--- a/apps/web/src/lib/gitReactQuery.ts
+++ b/apps/web/src/lib/gitReactQuery.ts
@@ -118,11 +118,13 @@ export function gitRunStackedActionMutationOptions(input: {
     mutationFn: async ({
       action,
       commitMessage,
+      commitFlags,
       featureBranch,
       filePaths,
     }: {
       action: GitStackedAction;
       commitMessage?: string;
+      commitFlags?: string;
       featureBranch?: boolean;
       filePaths?: string[];
     }) => {
@@ -132,6 +134,7 @@ export function gitRunStackedActionMutationOptions(input: {
         cwd: input.cwd,
         action,
         ...(commitMessage ? { commitMessage } : {}),
+        ...(commitFlags ? { commitFlags } : {}),
         ...(featureBranch ? { featureBranch } : {}),
         ...(filePaths ? { filePaths } : {}),
       });
diff --git a/apps/web/src/routes/_chat.settings.tsx b/apps/web/src/routes/_chat.settings.tsx
index c0e9a7ef9..730a7d2ea 100644
--- a/apps/web/src/routes/_chat.settings.tsx
+++ b/apps/web/src/routes/_chat.settings.tsx
@@ -96,6 +96,7 @@ function SettingsRouteView() {
 
   const codexBinaryPath = settings.codexBinaryPath;
   const codexHomePath = settings.codexHomePath;
+  const gitCommitFlags = settings.gitCommitFlags;
   const keybindingsConfigPath = serverConfigQuery.data?.keybindingsConfigPath ?? null;
   const availableEditors = serverConfigQuery.data?.availableEditors;
 
@@ -443,6 +444,48 @@ function SettingsRouteView() {
               </div>
             </section>
 
+            <section className="rounded-2xl border border-border bg-card p-5">
+              <div className="mb-4">
+                <h2 className="text-sm font-medium text-foreground">Git</h2>
+                <p className="mt-1 text-xs text-muted-foreground">
+                  Configure extra flags for app-run <code>git commit</code> commands.
+                </p>
+              </div>
+
+              <div className="space-y-4">
+                <label htmlFor="git-commit-flags" className="block space-y-1">
+                  <span className="text-xs font-medium text-foreground">
+                    Extra git commit flags
+                  </span>
+                  <Input
+                    id="git-commit-flags"
+                    value={gitCommitFlags}
+                    onChange={(event) => updateSettings({ gitCommitFlags: event.target.value })}
+                    placeholder="--no-gpg-sign"
+                    spellCheck={false}
+                  />
+                  <span className="text-xs text-muted-foreground">
+                    Applied to app-run git commit commands only. Example: <code>--no-gpg-sign</code>
+                    . Quoted arguments are not supported yet.
+                  </span>
+                </label>
+
+                <div className="flex justify-end">
+                  <Button
+                    size="xs"
+                    variant="outline"
+                    onClick={() =>
+                      updateSettings({
+                        gitCommitFlags: defaults.gitCommitFlags,
+                      })
+                    }
+                  >
+                    Restore default
+                  </Button>
+                </div>
+              </div>
+            </section>
+
             <section className="rounded-2xl border border-border bg-card p-5">
               <div className="mb-4">
                 <h2 className="text-sm font-medium text-foreground">Responses</h2>
diff --git a/packages/contracts/src/git.ts b/packages/contracts/src/git.ts
index 081b4d0d8..4c06d8a73 100644
--- a/packages/contracts/src/git.ts
+++ b/packages/contracts/src/git.ts
@@ -60,6 +60,7 @@ export const GitRunStackedActionInput = Schema.Struct({
   cwd: TrimmedNonEmptyStringSchema,
   action: GitStackedAction,
   commitMessage: Schema.optional(TrimmedNonEmptyStringSchema.check(Schema.isMaxLength(10_000))),
+  commitFlags: Schema.optional(TrimmedNonEmptyStringSchema.check(Schema.isMaxLength(4_096))),
   featureBranch: Schema.optional(Schema.Boolean),
   filePaths: Schema.optional(
     Schema.Array(TrimmedNonEmptyStringSchema).check(Schema.isMinLength(1)),