About

Imported from personamanagmentlayer/pcl (stdlib/tools/webrtc-expert/SKILL.md). Install upstream with npx skills add personamanagmentlayer/pcl --skill webrtc-expert. Copyright stays with the author.

WebRTC Expert

Name: webrtc-expert
Author: personamanagmentlayer

Core Concepts

WebRTC Architecture

Peer Connection - Direct P2P connection
Media Streams - Audio/video tracks
Data Channels - Arbitrary data transfer
Signaling - Exchange connection info
ICE - Interactive Connectivity Establishment
STUN/TURN - NAT traversal servers

Key Components

getUserMedia - Access camera/microphone
RTCPeerConnection - Peer-to-peer connection
RTCDataChannel - Data communication
MediaRecorder - Record media streams
Screen Sharing - Capture screen content
Simulcast - Multiple quality streams

Protocols & Standards

SDP - Session Description Protocol
Candidate Exchange - ICE candidates
DTLS/SRTP - Secure communication
Janus/Mediasoup - Media servers
Socket.IO/WebSockets - Signaling layer
ORTC - Object RTC (alternative API)

Best Practices

Connection Establishment

Always use STUN/TURN servers
Implement proper signaling
Handle connection failures
Monitor connection quality
Implement reconnection logic
Test across different networks

Media Handling

Request appropriate constraints
Handle permission denials
Implement adaptive bitrate
Monitor bandwidth usage
Support screen sharing
Handle device changes

Security

Use HTTPS for signaling
Validate all signaling messages
Implement authentication
Encrypt data channels
Use SRTP for media
Sanitize user input

Performance

Use simulcast for groups
Implement bandwidth adaptation
Monitor CPU usage
Optimize video resolution
Use hardware acceleration
Implement graceful degradation

Anti-Patterns

Common Mistakes

No TURN server fallback
Ignoring ICE failures
Missing error handling
Hard-coded ICE servers
Not closing connections properly
Missing permission checks

Connection Issues

Synchronous signaling
No reconnection strategy
Ignoring network changes
Missing ICE restart
Poor error messages
No connection timeout

Performance Problems

Excessive video resolution
No bandwidth adaptation
Missing simulcast
Inefficient signaling
Not reusing connections
Memory leaks from streams

Reference Documentation

Detailed material lives alongside this skill and is read on demand:

Implementation Examples — Basic Video Chat (Vanilla JavaScript), Screen Sharing, Data Channel for Chat, Media Recording, React WebRTC Component

Resources

Official Documentation

WebRTC.org - Official site
MDN WebRTC API - API reference
WebRTC Samples - Code examples
Getting Started - Beginner guide

Learning Resources

WebRTC for the Curious - Free book
WebRTC Codelab - Tutorial
Real-Time Communication with WebRTC - Guide
YouTube WebRTC - Video tutorials

Tools & Libraries

SimpleWebRTC - Simplified library
PeerJS - P2P library
Daily.co - Video API
Janus Gateway - Media server

Community Resources

WebRTC Discussion - Google Group
Stack Overflow - Q&A
Reddit r/webrtc - Community
WebRTC Weekly - Newsletter

Use it

Copy one of these into your project. Installing also returns the manifest and these snippets.

yaml

targets:
  - https://api.opensmartroute.ai/api/v1/registry/personamanagmentlayer-pcl-webrtc-expert/manifest   # or paste the manifest below

Manifest

An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.

personamanagmentlayer-pcl-webrtc-expert.ocm.jsonjson

{
  "ocm": "1",
  "id": "personamanagmentlayer-pcl-webrtc-expert",
  "kind": "skill",
  "name": "webrtc-expert",
  "description": "Expert in WebRTC real-time communication, signaling protocols, ICE/STUN/TURN servers, peer connections, media streams, and building video/audio applications. Use when the user mentions real time, video, audio, peer to peer, signaling, or ice, or when the task involves WebRTC Architecture, Protocols & Standards, Basic Video Chat, or Screen Sharing.",
  "publisher": "personamanagmentlayer",
  "version": "1.0.0",
  "capabilities": {
    "domains": [
      "general"
    ],
    "tags": [
      "skill-md",
      "webrtc",
      "real-time",
      "video",
      "audio",
      "peer-to-peer",
      "signaling",
      "ice",
      "stun",
      "turn"
    ],
    "languages": [
      "en"
    ]
  },
  "quality_prior": 0.6,
  "examples": [
    "Expert in WebRTC real-time communication, signaling protocols, ICE/STUN/TURN servers, peer connections, media streams, and building video/audio applications. Use when the user mentions real time, video, audio, peer to peer, signaling, or ice, or when the task involves WebRTC Architecture, Protocols & Standards, Basic Video Chat, or Screen Sharing."
  ],
  "primary": false,
  "metadata": {
    "source": {
      "provider": "skills.sh",
      "repository": "https://github.com/personamanagmentlayer/pcl",
      "path": "stdlib/tools/webrtc-expert/SKILL.md",
      "ref": "HEAD",
      "url": "https://github.com/personamanagmentlayer/pcl/blob/HEAD/stdlib/tools/webrtc-expert/SKILL.md",
      "key": "personamanagmentlayer/pcl/stdlib/tools/webrtc-expert/SKILL.md"
    },
    "allowed_tools": [
      "Read",
      "Write",
      "Bash",
      "Grep",
      "Glob"
    ]
  },
  "instructions": "# WebRTC Expert\n\n## Core Concepts\n\n### WebRTC Architecture\n\n- **Peer Connection** - Direct P2P connection\n- **Media Streams** - Audio/video tracks\n- **Data Channels** - Arbitrary data transfer\n- **Signaling** - Exchange connection info\n- **ICE** - Interactive Connectivity Establishment\n- **STUN/TURN** - NAT traversal servers\n\n### Key Components\n\n- **getUserMedia** - Access camera/microphone\n- **RTCPeerConnection** - Peer-to-peer connection\n- **RTCDataChannel** - Data communication\n- **MediaRecorder** - Record media streams\n- **Screen Sharing** - Capture screen content\n- **Simulcast** - Multipl",
  "cost": {
    "context_tokens": 945
  }
}

Fetch it by URL: GET /api/v1/registry/personamanagmentlayer-pcl-webrtc-expert/manifest?version=1.0.0

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