What is upgrade-kube-agents?

A procedure for upgrading the Kubernetes Agentic Harness and its operator on an active Google Kubernetes Engine cluster.

Performing harness-only, operator-only, or full upgrades, either interactively or without prompts, and changing the deployed image versions and related resources.

It applies the chosen upgrade scope while preserving the saved installation configuration needed to render the system correctly.

How gke-labs/kube-agents configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to gke-labs/kube-agents. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/gke-labs/kube-agents/main/.agents/skills/upgrade-kube-agents/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/gke-labs/kube-agents

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gke-labs/kube-agents/upgrade-kube-agents/github.svg)](https://agentmods.dev/skills/gke-labs/kube-agents/upgrade-kube-agents)

Your own site

<a href="https://agentmods.dev/skills/gke-labs/kube-agents/upgrade-kube-agents"><img src="https://agentmods.dev/badge/skills/gke-labs/kube-agents/upgrade-kube-agents/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gke-labs/kube-agents/upgrade-kube-agents"><img src="https://agentmods.dev/badge/skills/gke-labs/kube-agents/upgrade-kube-agents.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 877 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00029	$0.00877
Opus 5	$0.00015	$0.00439
Sonnet 5	$0.00006	$0.00175
Haiku 4.5	$0.00003	$0.00088

Measured 8d ago against content hash f819922a5418, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade C, and why

upgrade-kube-agents scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://gke-labs.github.io/kube-agents/upgrade.sh | bash -s -- \

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://gke-labs.github.io/kube-agents/upgrade.sh | bash -s -- \

.agents/skills/upgrade-kube-agents/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Upgrade Kubernetes Agentic Harness (kube-agents)

Use this skill when asked to upgrade the kube-agents Platform Agent or operator on an active GKE cluster.

One-Liner Execution Mode (Non-Interactive)

To non-interactively upgrade kube-agents on a GKE cluster, run the one-liner from the directory holding the original install checkout — the upgrade refuses to proceed without the install's install.env configuration (a legacy k8s-operator/scripts/vars.sh also satisfies it), because a full upgrade re-renders the whole install (the PlatformAgent CR included) from it. KUBE_AGENTS_INSTALL_ENV points at a configuration held somewhere else, which is how an ephemeral CI runner supplies one:

curl -fsSL https://gke-labs.github.io/kube-agents/upgrade.sh | bash -s -- \
  --upgrade-mode="full" \
  --non-interactive \
  --project-id="<PROJECT_ID>" \
  --cluster-name="<CLUSTER_NAME>" \
  --region="<REGION>" \
  --image-tag="<SEMVER_TAG_OR_FULL_COMMIT_SHA>"

Upgrade Modes

--upgrade-mode=harness: helm upgrade --reuse-values re-tagging only the Platform Agent image (platformAgent.deployment.image.tag).
--upgrade-mode=operator: applies the chart's CRDs with kubectl first (Helm never touches crds/ on upgrade), then helm upgrade --reuse-values re-tagging only the operator image.
--upgrade-mode=full (Default): applies the CRDs, then runs a full terraform apply at the new --image-tag through the install engine — both image tags move and every setting in install.env is re-rendered. This mode additionally requires the terraform CLI.

Every mode requires the kube-agents Helm release to exist in the target namespace. An install without one predates the Terraform + Helm engine: upgrade it with the release that installed it (curl the matching versioned upgrade.sh), or re-install with install.sh to adopt the new engine.

Dry-Run Mode

To preview the upgrade plan and output a JSON status report without modifying cloud resources:

Read the full file on GitHub · 70 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

8d ago Changed · +17 lines f819922a5418
12d ago First seen · 53 lines · 29 tokens per session scan C e924ae785284

Subscribe to this mod's changes

upgrade-kube-agents is a skill published in the GitHub repository gke-labs/kube-agents (54 stars, last pushed today), licensed Apache-2.0. It adds 29 tokens to every session and 877 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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kube-agents: Skill for Claude Code