> This page is for version 0.7.0.
> For other versions, use one of these documentation indexes:
> - Latest (default): https://docs.nvidia.com/nemo-helix/latest/llms.txt
> - 0.8.0: https://docs.nvidia.com/nemo-helix/v0.8.0/llms.txt
> - 0.7.1: https://docs.nvidia.com/nemo-helix/v0.7.1/llms.txt
> - 0.7.0: https://docs.nvidia.com/nemo-helix/v0.7.0/llms.txt
> - 0.6.0: https://docs.nvidia.com/nemo-helix/v0.6.0/llms.txt
> - 0.5.1: https://docs.nvidia.com/nemo-helix/v0.5.1/llms.txt
> - 0.5.0: https://docs.nvidia.com/nemo-helix/v0.5.0/llms.txt
> - 0.4.0: https://docs.nvidia.com/nemo-helix/v0.4.0/llms.txt
> - 0.3.0: https://docs.nvidia.com/nemo-helix/v0.3.0/llms.txt
> - 0.2.0: https://docs.nvidia.com/nemo-helix/v0.2.0/llms.txt

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

# v0.5.1 - 2026-09-10

NeMo Helix v0.5.1 is a patch release for the 0.5 release line. It focuses
on Kubernetes deployment correctness for Fabric-backed agents.

## What's fixed

* Kubernetes agent deployments now stage read-only agent roots into writable
  runtime directories before starting Fabric. This fixes deployments that
  reached a healthy state and then failed on first invocation when Fabric tried
  to write beside a ConfigMap-mounted agent root.
* Staged Kubernetes agent roots are isolated per runtime lifecycle and are
  cleaned up when startup fails or when the runtime stops.
* Agent deployment creation now rejects a container deployment with no
  resolvable image before persisting the deployment record.
* Agent deployment creation now rejects a requested deployment mode when the
  configured executor cannot honor that mode, including mismatches hidden by
  default executor fallback.

## Upgrade from v0.5.0

Update to v0.5.1 before relying on Kubernetes-hosted Fabric agent deployments.
After updating the checkout or package, restart local services or redeploy the
affected Kubernetes agent deployments so the deployment preflight checks and
writable-root staging take effect.

## Compatibility

v0.5.1 has the same compatibility target as v0.5.0.

## Links

* Repository: [https://github.com/NVIDIA-NeMo/nemo-helix](https://github.com/NVIDIA-NeMo/nemo-helix)
* Issues: [https://github.com/NVIDIA-NeMo/nemo-helix/issues](https://github.com/NVIDIA-NeMo/nemo-helix/issues)