Example

// Start both from your message handler. No model tool call.
const reactionTask = fetch(
  "https://useemote.com/v1/react",
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.EMOTE_API_KEY}`,
      "Content-Type": "application/json",
    "Idempotency-Key": eventId,
    },
    body: JSON.stringify({ message, agent, context, reactions, frequency: "balanced" }),
    signal: AbortSignal.timeout(3000),
  },
).then(async (response) => {
  if (!response.ok) throw new Error(`Emote: ${response.status}`);
  const reaction = await response.json();
  if (reaction !== "none") {
    await attachReaction(messageId, reaction);
  }
}).catch(reportReactionError);

// Your existing model and delivery code keep running independently.
const replyTask = Promise.resolve()
  .then(() => generateReply(message, context))
  .then(sendReply);

const [, reply] = await Promise.allSettled([reactionTask, replyTask]);
if (reply.status === "rejected") throw reply.reason;