For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
  • About NVIDIA NeMo Relay
    • Overview
    • Architecture
    • Ecosystem
    • Concepts
    • Release Notes
  • Getting Started
    • Agent Runtime Primer
    • Prerequisites
    • Installation
    • Configuration / Setup
    • Quick Start
  • NVIDIA NeMo Relay CLI
    • About
    • Basic Usage
    • Claude Code
    • Codex
    • Cursor
    • Hermes Agent
  • Supported Integrations
    • About
    • OpenClaw Plugin Guide
    • LangChain Integration Guide
    • LangGraph Integration Guide
    • Deep Agents Integration Guide
  • Instrument Applications
    • About
    • Adding Scopes and Marks
    • Instrument a Tool Call
    • Instrument an LLM Call
    • Add Middleware
    • Code Examples
  • Observability Plugin
    • About
    • Configuration
    • Agent Trajectory Interchange Format (ATIF)
    • Agent Trajectory Observability Format (ATOF)
    • OpenTelemetry
    • OpenInference
  • Adaptive Plugin
    • About
    • Configuration
    • Adaptive Cache Governor (ACG)
    • Adaptive Hints
  • NeMo Guardrails Plugin
    • About
    • Configuration
  • Integrate into Frameworks
    • About
    • Adding Scopes
    • Wrap Tool Calls
    • Wrap LLM Calls
    • Handle Non-Serializable Data
    • Using Codecs
    • Provider Codecs
    • Provider Response Codecs
    • Code Examples
  • Build Plugins
    • About
    • Define a Plugin
    • Validate Plugin Configuration
    • Plugin Configuration Files
    • Register Plugin Behavior
    • Design Plugin Configuration
    • NeMo Guardrails Example Plugin
    • Code Examples
  • Contribute
    • About
    • Development Setup
    • Workflow and Reviews
    • Testing and Documentation
  • Reference
    • APIs
      • Python Library Reference
      • Node.js Library Reference
      • Rust Library Reference
        • nemo-relay
          • api
          • codec
          • config_editor
          • error
          • json
          • observability
            • atif
            • atof
            • openinference
              • OpenInferenceConfig
              • OpenInferenceSubscriber
              • OpenInferenceError
              • OtlpTransport
              • Result
            • otel
            • plugin_component
          • plugin
          • plugins
          • stream
          • editor_config
        • nemo-relay-adaptive
        • nemo-relay-ffi
    • Performance
  • Resources
    • Support and FAQs
    • Glossary
    • Troubleshooting Guide
    • Community
    • Legal
NVIDIANVIDIA
Developer-friendly docs for your API
Privacy Policy | Your Privacy Choices | Terms of Service | Accessibility | Corporate Policies | Product Security | Contact

Copyright © 2026, NVIDIA Corporation.

LogoLogo
On this page
  • Structs
  • Enums
  • Type Aliases
ReferenceAPIsRust Library Referencenemo-relayobservability

Module openinference

||View as Markdown|
Previous

Type Alias Result

Next

Struct Open Inference Config

Generated from cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi.

OpenInference subscriber support for NeMo Relay.

This crate adapts NeMo Relay lifecycle events into OpenInference trace spans:

  • scope/tool/LLM Start events open spans
  • matching End events close spans
  • Mark events become span events on the active parent span when possible
  • orphan marks fall back to zero-duration spans so they still reach OTLP

The public API is intentionally small:

  • OpenInferenceConfig configures the OTLP exporter and OpenInference metadata
  • OpenInferenceSubscriber exposes a NeMo Relay EventSubscriberFn and convenience register / deregister / force_flush / shutdown methods

Structs

  • OpenInferenceConfig: Configuration for the OpenInference subscriber.
  • OpenInferenceSubscriber: OpenInference-backed NeMo Relay subscriber.

Enums

  • OpenInferenceError: Errors produced while configuring or operating the OpenInference subscriber.
  • OtlpTransport: Supported OTLP trace transports.

Type Aliases

  • Result: Result type for the OpenInference subscriber crate.