diff --git a/app/game-api/package.json b/app/game-api/package.json
index 59f96fe..46eb99a 100644
--- a/app/game-api/package.json
+++ b/app/game-api/package.json
@@ -6,6 +6,8 @@
     "scripts": {
         "build": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/game-api",
         "dev": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/game-api --watch",
+        "worker": "GAME_API_ROLE=battle-sim-worker node dist/index.js",
+        "worker:dev": "GAME_API_ROLE=battle-sim-worker tsdown -c ../../tsdown.config.ts -F @sammo-ts/game-api --watch",
         "lint": "node -e \"console.log('lint not configured')\"",
         "test": "vitest run --config vitest.config.ts",
         "typecheck": "tsc --noEmit"
diff --git a/app/game-api/src/battleSim/schema.ts b/app/game-api/src/battleSim/schema.ts
new file mode 100644
index 0000000..a16cdbb
--- /dev/null
+++ b/app/game-api/src/battleSim/schema.ts
@@ -0,0 +1,98 @@
+import { z } from 'zod';
+
+import type { BattleSimRequestPayload } from './types.js';
+
+export const zBattleSimGeneral = z.object({
+    no: z.number().int().positive(),
+    name: z.string().min(1),
+    nation: z.number().int().positive(),
+    turntime: z.string().min(1),
+    personal: z.string().nullable(),
+    special2: z.string().nullable(),
+    crew: z.number().int().min(0),
+    crewtype: z.number().int().positive(),
+    atmos: z.number().int().min(0),
+    train: z.number().int().min(0),
+    intel: z.number().int().min(0),
+    intel_exp: z.number().int().min(0),
+    book: z.string().nullable(),
+    strength: z.number().int().min(0),
+    strength_exp: z.number().int().min(0),
+    weapon: z.string().nullable(),
+    injury: z.number().int().min(0),
+    leadership: z.number().int().min(0),
+    leadership_exp: z.number().int().min(0),
+    horse: z.string().nullable(),
+    item: z.string().nullable(),
+    explevel: z.number().int().min(0),
+    experience: z.number().int().min(0),
+    dedication: z.number().int().min(0),
+    officer_level: z.number().int().min(1),
+    officer_city: z.number().int().positive(),
+    gold: z.number().int().min(0),
+    rice: z.number().int().min(0),
+    dex1: z.number().int().min(0),
+    dex2: z.number().int().min(0),
+    dex3: z.number().int().min(0),
+    dex4: z.number().int().min(0),
+    dex5: z.number().int().min(0),
+    recent_war: z.string().nullable(),
+    warnum: z.number().int().min(0),
+    killnum: z.number().int().min(0),
+    killcrew: z.number().int().min(0),
+    inheritBuff: z.union([z.record(z.string(), z.number()), z.array(z.number())]).optional(),
+});
+
+export const zBattleSimCity = z.object({
+    city: z.number().int().positive(),
+    nation: z.number().int().min(0),
+    supply: z.number().int().min(0),
+    name: z.string().min(1),
+    pop: z.number().min(0),
+    agri: z.number().min(0),
+    comm: z.number().min(0),
+    secu: z.number().min(0),
+    def: z.number().min(0),
+    wall: z.number().min(0),
+    trust: z.number().min(0),
+    level: z.number().int().min(1),
+    pop_max: z.number().min(0),
+    agri_max: z.number().min(0),
+    comm_max: z.number().min(0),
+    secu_max: z.number().min(0),
+    def_max: z.number().min(0),
+    wall_max: z.number().min(0),
+    dead: z.number().min(0),
+    state: z.number().int().min(0),
+    conflict: z.string(),
+});
+
+export const zBattleSimNation = z.object({
+    type: z.string().min(1),
+    tech: z.number().min(0),
+    level: z.number().int().min(1),
+    capital: z.number().int().min(0),
+    nation: z.number().int().min(0),
+    name: z.string().min(1),
+    gold: z.number().min(0),
+    rice: z.number().min(0),
+    gennum: z.number().int().min(1),
+});
+
+export const zBattleSimRequest: z.ZodType<BattleSimRequestPayload> = z.object({
+    action: z.enum(['reorder', 'battle']),
+    seed: z.string().optional(),
+    repeatCnt: z.number().int().min(1).max(1000),
+    year: z.number().int().min(0),
+    month: z.number().int().min(1).max(12),
+    attackerGeneral: zBattleSimGeneral,
+    attackerCity: zBattleSimCity,
+    attackerNation: zBattleSimNation,
+    defenderGenerals: z.array(zBattleSimGeneral),
+    defenderCity: zBattleSimCity,
+    defenderNation: zBattleSimNation,
+});
+
+export const zBattleSimJobId = z.object({
+    jobId: z.string().min(1),
+});
diff --git a/app/game-api/src/router.ts b/app/game-api/src/router.ts
index 707f74a..274a1e9 100644
--- a/app/game-api/src/router.ts
+++ b/app/game-api/src/router.ts
@@ -28,7 +28,7 @@ import {
     type MessageView,
 } from './messages/store.js';
 import { buildBattleSimJobPayload } from './battleSim/environment.js';
-import type { BattleSimRequestPayload } from './battleSim/types.js';
+import { zBattleSimJobId, zBattleSimRequest } from './battleSim/schema.js';
 
 const zRunReason = z.enum(['schedule', 'manual', 'poke']);
 const zMessageType = z.enum(['private', 'public', 'national', 'diplomacy']);
@@ -39,96 +39,6 @@ const zTurnRunBudget = z.object({
     catchUpCap: z.number().int().positive(),
 });
 
-const zBattleSimGeneral = z.object({
-    no: z.number().int().positive(),
-    name: z.string().min(1),
-    nation: z.number().int().positive(),
-    turntime: z.string().min(1),
-    personal: z.string().nullable(),
-    special2: z.string().nullable(),
-    crew: z.number().int().min(0),
-    crewtype: z.number().int().positive(),
-    atmos: z.number().int().min(0),
-    train: z.number().int().min(0),
-    intel: z.number().int().min(0),
-    intel_exp: z.number().int().min(0),
-    book: z.string().nullable(),
-    strength: z.number().int().min(0),
-    strength_exp: z.number().int().min(0),
-    weapon: z.string().nullable(),
-    injury: z.number().int().min(0),
-    leadership: z.number().int().min(0),
-    leadership_exp: z.number().int().min(0),
-    horse: z.string().nullable(),
-    item: z.string().nullable(),
-    explevel: z.number().int().min(0),
-    experience: z.number().int().min(0),
-    dedication: z.number().int().min(0),
-    officer_level: z.number().int().min(1),
-    officer_city: z.number().int().positive(),
-    gold: z.number().int().min(0),
-    rice: z.number().int().min(0),
-    dex1: z.number().int().min(0),
-    dex2: z.number().int().min(0),
-    dex3: z.number().int().min(0),
-    dex4: z.number().int().min(0),
-    dex5: z.number().int().min(0),
-    recent_war: z.string().nullable(),
-    warnum: z.number().int().min(0),
-    killnum: z.number().int().min(0),
-    killcrew: z.number().int().min(0),
-    inheritBuff: z.union([z.record(z.string(), z.number()), z.array(z.number())]).optional(),
-});
-
-const zBattleSimCity = z.object({
-    city: z.number().int().positive(),
-    nation: z.number().int().min(0),
-    supply: z.number().int().min(0),
-    name: z.string().min(1),
-    pop: z.number().min(0),
-    agri: z.number().min(0),
-    comm: z.number().min(0),
-    secu: z.number().min(0),
-    def: z.number().min(0),
-    wall: z.number().min(0),
-    trust: z.number().min(0),
-    level: z.number().int().min(1),
-    pop_max: z.number().min(0),
-    agri_max: z.number().min(0),
-    comm_max: z.number().min(0),
-    secu_max: z.number().min(0),
-    def_max: z.number().min(0),
-    wall_max: z.number().min(0),
-    dead: z.number().min(0),
-    state: z.number().int().min(0),
-    conflict: z.string(),
-});
-
-const zBattleSimNation = z.object({
-    type: z.string().min(1),
-    tech: z.number().min(0),
-    level: z.number().int().min(1),
-    capital: z.number().int().min(0),
-    nation: z.number().int().min(0),
-    name: z.string().min(1),
-    gold: z.number().min(0),
-    rice: z.number().min(0),
-    gennum: z.number().int().min(1),
-});
-
-const zBattleSimRequest: z.ZodType<BattleSimRequestPayload> = z.object({
-    action: z.enum(['reorder', 'battle']),
-    seed: z.string().optional(),
-    repeatCnt: z.number().int().min(1).max(1000),
-    year: z.number().int().min(0),
-    month: z.number().int().min(1).max(12),
-    attackerGeneral: zBattleSimGeneral,
-    attackerCity: zBattleSimCity,
-    attackerNation: zBattleSimNation,
-    defenderGenerals: z.array(zBattleSimGeneral),
-    defenderCity: zBattleSimCity,
-    defenderNation: zBattleSimNation,
-});
 
 const buildShiftAmountSchema = (maxTurns: number) =>
     z.number()
@@ -177,11 +87,7 @@ export const appRouter = router({
                 return ctx.battleSim.simulate(payload);
             }),
         getSimulation: procedure
-            .input(
-                z.object({
-                    jobId: z.string().min(1),
-                })
-            )
+            .input(zBattleSimJobId)
             .query(async ({ ctx, input }) => {
                 const result = await ctx.battleSim.getSimulationResult(input.jobId);
                 if (!result) {
diff --git a/app/game-api/src/server.ts b/app/game-api/src/server.ts
index d476e64..552ac63 100644
--- a/app/game-api/src/server.ts
+++ b/app/game-api/src/server.ts
@@ -101,6 +101,7 @@ export const createGameApiServer = async () => {
         profile: config.profileName,
     }));
 
+
     app.addHook('onClose', async () => {
         await flushSubscriber.stop();
         await flushSubscriberClient.quit();