# React Message

> Add an emoji reaction to the trigger message. Use this to express quick emotions or acknowledge messages without sending a full text reply.

- Skill: `jim60105/react-message` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add jim60105/react-message`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jim60105/react-message/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: jim60105 (https://skillmd.com/u/jim60105)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jim60105/react-message

---


# React Message Skill

Add an emoji reaction to the message that triggered this conversation.

## Critical Rules

1. **Use appropriate emoji**: Choose an emoji that matches the tone and context of the conversation.
2. **Reaction is optional**: You don't have to react. Only react when it feels natural.
3. **Can be used with or without send-reply**: You may react AND send a reply, or just react without replying.
4. **Timeout**: The script won't run for more than 30 seconds. If it hangs, do stop_bash.
5. **Use the correct emoji format**: For custom emojis, use the format provided in the emoji list. For standard Unicode emojis, use the emoji character directly (e.g., "👍", "❤️").
6. **React only ONCE**: Never use this skill more than once. Each time you trigger a reaction, it will replace the previous one, as only one reaction can be displayed at a time. Think carefully and choose just one reaction.

## Usage

```
${HOME}/.agents/skills/react-message/scripts/react-message.ts \
  --session-id "$SESSION_ID" \
  --emoji "👍"
```

**`--session-id`**: Use the session id rendered in your system prompt. `$SESSION_ID` works only in per-spawn deployments; in shared-process mode it is not set and the skill library resolves the owning session automatically — a mismatched value is never honored.

### Examples

React with a Unicode emoji:

```
${HOME}/.agents/skills/react-message/scripts/react-message.ts \
  --session-id "$SESSION_ID" \
  --emoji "❤️"
```

React with a custom platform emoji (use the `useAsReaction` format from the emoji list):

```
${HOME}/.agents/skills/react-message/scripts/react-message.ts \
  --session-id "$SESSION_ID" \
  --emoji ":custom_emoji_name:"
```