Agentic AI Reference Architecture

Tools & Integration · Interface

gRPC Agent API

InterfaceTools & IntegrationOrchestration & Toolsarc:GRPCAgentAPI

A service-oriented RPC API with strongly typed Protocol Buffer schemas over multiplexed HTTP/2, supporting unary and streaming modes.

Responsibility. Exposes agent capabilities as typed remote procedures and streams.

Also known as: gRPC RAG endpoint

Variant of Agent Service API abstract

When to choose. Choose when throughput and latency are critical, type safety matters, bidirectional streaming is needed, and both client and server implementations are controlled.

is exposed byspecializesalternative toRAG Query Orchestrator: is exposed byRAG Query OrchestratorAgent Service API: specializesAgent Service APIREST Agent API: alternative toREST Agent API
Direct neighbourhood (hover for relationship types)

Relationships

is exposed by structural

alternative to variability

Quantitative guidance

As stated by the sources; verify before use.

Classification

Patterns
Server-streamingClient-streamingBidirectional streaming
Technologies
gRPCProtocol BuffersHTTP/2
Quality attributes
Performance efficiency (ISO/IEC 25010)Safety (ISO/IEC 25010 | NIST AI RMF: safe)

Sources

  1. Ch1.3: T. Nguyen, "Multi-Agent Systems," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.3. ISBN: 9798244538229.
  2. Ch6.5: T. Nguyen, "Production RAG Systems," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 6.5. ISBN: 9798244538229.