Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add aj-geddes/useful-ai-prompts --skill real-time-featuresgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/real-time-features)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/real-time-features"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/real-time-features/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/real-time-features"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/real-time-features.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00046 | $0.00642 |
| Opus 5 | $0.00023 | $0.00321 |
| Sonnet 5 | $0.00009 | $0.00128 |
| Haiku 4.5 | $0.00005 | $0.00064 |
Grade A, and why
real-time-features scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Real-Time Features
Table of Contents
Overview
Implement real-time bidirectional communication between clients and servers for instant data synchronization and live updates.
When to Use
- Chat and messaging applications
- Live dashboards and analytics
- Collaborative editing (Google Docs-style)
- Real-time notifications
- Live sports scores or stock tickers
- Multiplayer games
- Live auctions or bidding systems
- IoT device monitoring
- Real-time location tracking
Quick Start
Minimal working example:
// server.ts
import WebSocket, { WebSocketServer } from "ws";
import { createServer } from "http";
interface Message {
type: "join" | "message" | "leave" | "typing";
userId: string;
username: string;
content?: string;
timestamp: number;
}
interface Client {
ws: WebSocket;
userId: string;
username: string;
roomId: string;
}
class ChatServer {
private wss: WebSocketServer;
private clients: Map<string, Client> = new Map();
private rooms: Map<string, Set<string>> = new Map();
constructor(port: number) {
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| WebSocket Server (Node.js) | WebSocket Server (Node.js) |
| WebSocket Client (React) | WebSocket Client (React) |
| Server-Sent Events (SSE) | Server-Sent Events (SSE) |
| Socket.IO (Production-Ready) | Socket.IO (Production-Ready) |
Best Practices
✅ DO
- Implement reconnection logic with exponential backoff
- Use heartbeat/ping-pong to detect dead connections
- Validate and sanitize all messages
- Implement authentication and authorization
- Handle connection limits and rate limiting
- Use compression for large payloads
- Implement proper error handling
- Monitor connection health
- Use rooms/channels for targeted messaging
- Implement graceful shutdown
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 105 lines · 46 tokens per session scan A e7e729bf353e
real-time-features is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 46 tokens to every session and 642 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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