diff --git a/src/utils/validateMarketId.ts b/src/utils/validateMarketId.ts
new file mode 100644
index 00000000..d20c104f
--- /dev/null
+++ b/src/utils/validateMarketId.ts
@@ -0,0 +1,7 @@
+const MARKET_ID_RE = /^[a-zA-Z0-9_-]{6,128}$/
+
+export function validateMarketId(value: string): void {
+  if (!MARKET_ID_RE.test(value)) {
+    throw new Error('Invalid market id format')
+  }
+}