> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/llms.txt.
> For full documentation content, see https://docs.nvidia.com/nemo/relay/llms-full.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Known Issues

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.