| name | ADK Orchestration |
| description | This skill should be used when the user asks about "multi-agent systems", "sub-agents", "delegation", "agent routing", "orchestration", "SequentialAgent", "ParallelAgent", "LoopAgent", "agent-to-agent", "A2A protocol", "agent hierarchy", "streaming", "real-time responses", "SSE", "server-sent events", "websocket", "bidirectional", "Live API", "voice", "audio", "video", "multimodal streaming", or needs guidance on building systems with multiple specialized agents working together or implementing real-time communication patterns. |
| version | 2.0.0 |
ADK Orchestration
Guide for building multi-agent systems with delegation, orchestration, inter-agent communication, and real-time streaming capabilities. Enables specialized agents to collaborate on complex tasks with modern communication patterns.
When to Use
Multi-Agent Systems
- Routing requests to specialized sub-agents
- Building agent pipelines (sequential execution)
- Running agents concurrently (parallel execution)
- Creating hierarchical agent teams
- Cross-system agent communication (A2A)
Streaming & Real-Time
- Streaming text responses as they generate
- Real-time chat with user interrupts
- Voice agent interactions (Live API)
- Video processing and multimodal streaming
- WebSocket bidirectional communication
When NOT to Use
- Single agent with tools → Use
@adk-agents and @adk-tools instead
- Callbacks and state → Use
@adk-behavior instead
- Agent deployment → Use
@adk-deployment instead
Key Concepts
Multi-Agent Patterns
Delegation routes requests to sub-agents based on their descriptions. The parent agent decides which child handles each request.
SequentialAgent executes sub-agents in order (A → B → C). Each agent receives the previous agent's output.
ParallelAgent runs sub-agents concurrently. Results are aggregated when all complete.
LoopAgent repeats execution until a condition is met. Useful for iterative refinement.
Hierarchy nests agent teams for complex organizations. Parent agents coordinate child teams.
A2A Protocol enables cross-system agent communication. Agents can call agents in other deployments.
Streaming Patterns
SSE (Server-Sent Events) streams text responses incrementally. Client receives partial responses as they generate.
Bidirectional Streaming enables real-time two-way communication. Users can interrupt agent responses mid-stream.
Live API powers voice and video agents. Use gemini-3-flash-live model for real-time audio/video processing.
Runner Types: Runner for basic execution, BidiStreamingRunner for bidirectional, LiveAPIRunner for voice/video.
References
Detailed guides with code examples:
Multi-Agent
references/delegation.md - Sub-agent routing patternsreferences/orchestration.md - Sequential, Parallel, Loop agentsreferences/advanced.md - Hierarchical and complex patternsreferences/a2a.md - Agent-to-Agent protocol
Streaming
references/sse.md - Server-sent events streamingreferences/bidirectional.md - WebSocket bidirectionalreferences/multimodal.md - Live API voice/video
