diff --git a/src/agents/tools/sessions-spawn-tool.ts b/src/agents/tools/sessions-spawn-tool.ts
index 595a0f1b0..7ea48ded4 100644
--- a/src/agents/tools/sessions-spawn-tool.ts
+++ b/src/agents/tools/sessions-spawn-tool.ts
@@ -41,7 +41,7 @@ const SessionsSpawnToolSchema = Type.Object({
     Type.Array(
       Type.Object({
         name: Type.String(),
-        content: Type.String({ maxLength: 6_700_000 }),
+        content: Type.String(),
         encoding: Type.Optional(optionalStringEnum(["utf8", "base64"] as const)),
         mimeType: Type.Optional(Type.String()),
       }),