Function deriveConversationKey

src/proxy.ts:1122–1129

Derive a key for conversation state. Model-independent so context survives model switches.

(messages: OpenAIMessage[])

/** Derive a key for conversation state. Model-independent so context survives model switches. */
function deriveConversationKey(messages: OpenAIMessage[]): string {
  const firstUserMsg = messages.find((m) => m.role === "user");
  const firstUserText = firstUserMsg ? textContent(firstUserMsg.content) : "";
  return createHash("sha256")
    .update(`conv:${firstUserText.slice(0, 200)}`)
    .digest("hex")
    .slice(0, 16);
}

/** Deterministic UUID derived from convKey so Cursor's server-side conversation
 *  persists across proxy restarts. Formats 16 bytes of SHA-256 as a v4-shaped UUID. */