SSE Skill

SkillDev tools

Server-Sent Events implementation, streaming patterns, and real-time updates.

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the SSE Skill skill

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/web-development/skills/sse/SKILL.md and read by ahel’s review.

Expert assistance for implementing Server-Sent Events for real-time streaming.

Capabilities

Implement SSE endpoints
Handle streaming responses
Manage client connections
Build event-driven updates
Implement reconnection

Usage

Invoke this skill when you need to:

Stream updates to clients
Implement live feeds
Build notification systems
One-way real-time communication

Implementation

// Server
app.get('/events', (req, res) => {
  res.setHeader('Content-Type', 'text/event-stream');
  res.setHeader('Cache-Control', 'no-cache');
  res.setHeader('Connection', 'keep-alive');

  const sendEvent = (event: string, data: object) => {
    res.write(`event: ${event}\n`);
    res.write(`data: ${JSON.stringify(data)}\n\n`);
  };

  // Send initial data
  sendEvent('connected', { timestamp: Date.now() });

  // Subscribe to updates
  const unsubscribe = eventEmitter.on('update', (data) => {
    sendEvent('update', data);
  });

  req.on('close', () => {
    unsubscribe();
  });
});

// Client
const eventSource = new EventSource('/events');

eventSource.addEventListener('update', (event) => {
  const data = JSON.parse(event.data);
  console.log('Update:', data);
});

Best Practices

Handle reconnection
Use event types for routing
Implement keep-alive
Clean up on disconnect

Target Processes

real-time-updates
live-feeds
notification-systems

Signals

GitHub stars: 2k
Forks: 112
Last commit: Sep 2026

Advanced

Item type: skill
Key: sse
Source: github.com/a5c-ai/babysitter

github.com/a5c-ai/babysitter