Google ADK

Vendor SDK#8 of 12 in AI Agent Frameworks

71%

COVERAGE

Google Agent Development Kit; v1.26.0; multimodal (text+image+audio); native A2A; Vertex AI integration; strongest multimodal agent support

Architecture

2 full, 2 partial of 4

Multi-Agent Orchestration

Coordinate multiple specialized agents with distinct roles, tools, and goals. Support sequential, parallel, and hierarch...

Full

State & Memory Mgmt

Persistent state across agent steps. Short-term working memory, long-term storage, checkpointing, and session persistenc...

Partial

Tool Use & Function Calling

Native support for calling external tools, APIs, databases, and code execution. Tool registries, parameter validation, a...

Full

Planning & Reasoning

Multi-step planning, chain-of-thought, ReAct loops, reflection, and self-correction. Support for both plan-then-execute ...

Partial

Interop

1 full, 2 partial of 3

MCP & A2A Protocol

Support for Model Context Protocol (tool integration) and Agent-to-Agent protocol (cross-framework agent communication)....

Full

Multi-Model Support

Support for multiple LLM providers (OpenAI, Anthropic, Google, open-source). Easy model switching without code changes.

Partial

Human-in-the-Loop

Pause execution for human approval, inspection, or override. Approval gates, state modification, and escalation workflow...

Partial

Runtime

1 full, 2 partial of 3

Streaming & Real-time

Stream agent outputs token-by-token. Support SSE, WebSocket, and real-time UI updates during multi-step execution.

Full

Error Recovery & Retries

Handle LLM failures, tool errors, and timeout gracefully. Automatic retries, fallback strategies, and circuit breaking.

Partial

Guardrails & Safety

Built-in or pluggable content filtering, output validation, and safety controls within agent execution pipelines.

Partial

Production

2 full, 2 partial of 4

Observability & Tracing

Trace agent execution paths, tool calls, decisions, and costs. Integration with LangSmith, Langfuse, or built-in tracing...

Partial

Deployment & Scaling

Production deployment options — managed platform, Docker/K8s, serverless. Auto-scaling, load balancing, and infrastructu...

Full

Open Source

Open-source availability and license type. Community size, contribution activity, and ecosystem health.

Full

Developer Experience

Documentation quality, quickstart time, debugging tools, type safety, and IDE support. Learning curve and community reso...

Partial

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