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
      • Highlights
      • Known Issues
  • 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
    • Performance
  • Resources
    • Support and FAQs
    • Glossary
    • Troubleshooting Guide
    • Community
    • Legal
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On this page
  • NeMo Relay 0.3
  • Fixed in NeMo Relay 0.3
  • Fixed in Earlier Releases
About NVIDIA NeMo RelayRelease Notes

Known Issues

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Highlights

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Agent Runtime Primer

This page lists current limitations and support notes for the release documentation set.

NeMo Relay 0.3

These notes apply to the NeMo Relay 0.3 release. The following known issues and limitations apply to NeMo Relay 0.3:

  • Go, WebAssembly, and the raw C FFI surface are experimental and source-first.
  • Generated API pages cover Rust, Python, and Node.js. Experimental bindings do not yet have the same generated documentation depth.
  • The NeMo Relay CLI is experimental. Coding agent observability support varies due to capabilities of hooks. Any encountered problems should be filed as bugs.
  • Node.js 24 or newer is required for Node.js binding and package workflows.
  • OpenClaw support uses public hook-backed telemetry with partial security and optimization support. Security is limited to pre-tool conditional guardrails, and optimization is limited to adaptive telemetry unless the integration owns a managed execution path.
  • The NeMo Guardrails plugin remote backend depends on the availability, latency, and policy behavior of the configured remote service.
  • S3-compatible ATIF export requires valid storage credentials and endpoint configuration in the runtime environment.
  • LLMRequest objects in the Python binding should be treated as immutable. Request middleware that changes content should return a new request object.
  • Native subscriber callbacks are delivered asynchronously. Flush subscribers before relying on callback side effects, captured event lists, files, or exporter output. Deregistering a subscriber affects future emissions, but callbacks from already-queued event snapshots may still run.

Fixed in NeMo Relay 0.3

  • Managed LLM start events are emitted before execution intercepts.
  • Coding-agent trace scopes are aligned with NeMo Relay agent scope semantics.
  • ATIF tool observations are correlated with their matching tool calls.
  • OpenClaw tool call replay visibility is preserved.
  • LangChain serialization handles wrapped integration payloads more reliably.

Fixed in Earlier Releases

  • Enabled TLS support for OTLP HTTP export.
  • Preserved Go scope stacks across OS threads.