diff --git a/open-sse/config/appConstants.js b/open-sse/config/appConstants.js
index 62ddfb6b..ed627535 100644
--- a/open-sse/config/appConstants.js
+++ b/open-sse/config/appConstants.js
@@ -178,7 +178,7 @@ export const CLAUDE_SYSTEM_PROMPT = "You are Claude Code, Anthropic's official C
 // makes the backend flag the request and answer 429 Quota Exhausted.
 export const ANTIGRAVITY_PROMPT_REWRITES = [
   { from: "You are a Claude agent, built on Anthropic's Claude Agent SDK.", to: "" },
-  { from: /You are Hermes Agent,\s*(an intelligent AI assistant)(?: created by Nous Research)?\./gi, to: "You are Hermes Agent. You are $1." },
+  { from: /You are Hermes(?: Agent)?(?:,\s*(?:an intelligent AI assistant|an AI assistant|an AI agent))?(?:,?\s*(?:built|created)\s+by\s+Nous Research)?\./gi, to: "You are an AI assistant." },
   // Claude Code prepends this line to its system prompt. The Claude-format translator strips it,
   // but OpenAI-format clients (e.g. proxies that convert Claude Code to /v1/chat/completions)
   // pass it through, and any system text containing it gets a fake 429 RESOURCE_EXHAUSTED.