mock-cluster

mock-cluster is a skill for Claude Code, Codex from bex-co/bex. It costs 48 tokens per session (987 once invoked), scanned A, original, Apache-2.0.

A runbook for creating or resizing a local test cluster that imitates the hosting environment and deploying the bex operator into it.

In plain words
What is it for?
Starting the local Kind and Cluster API cluster, installing its required components, loading the operator image, deploying the operator, or scaling the cluster to a chosen number of nodes.
Why use it?
It provides a repeatable local environment for testing cluster behavior without changing the live system.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/bex-co/bex/mock-cluster
Any agent
npx skills add bex-co/bex --skill mock-cluster
Clone the repo
git clone --depth 1 https://github.com/bex-co/bex

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.

agentmods badge for mock-cluster

README.md
[![agentmods](https://agentmods.dev/badge/skills/bex-co/bex/mock-cluster.svg)](https://agentmods.dev/skills/bex-co/bex/mock-cluster)
Your own site
<a href="https://agentmods.dev/skills/bex-co/bex/mock-cluster"><img src="https://agentmods.dev/badge/skills/bex-co/bex/mock-cluster.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 987 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00048 $0.00987
Opus 5 $0.00024 $0.00494
Sonnet 5 $0.00010 $0.00197
Haiku 4.5 $0.00005 $0.00099

Measured 5d ago against content hash 6eb164b22fb9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mock-cluster scanned grade A with 0 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 5d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/mock-cluster/SKILL.md · 44 lines

What it actually says

Bring up the local mock of the Hetzner substrate and deploy the bex operator into it.

If $ARGUMENTS is scale N: just run bash scripts/mock-cluster.sh scale N, then show kubectl get nodes (with KUBECONFIG=infra/local/bex.kubeconfig) and stop.

Otherwise, run the full bring-up:

  1. bash scripts/mock-cluster.sh — kind infra cluster + Cluster API + CAPD app cluster, plus the app-cluster baseline the operator needs: Calico, coredns/calico-kube-controllers control-plane pins, local-path default StorageClass, cert-manager (prod's pinned version; make deploy's webhook cert requires it). This can take several minutes; it writes the app-cluster kubeconfig to infra/local/bex.kubeconfig.
  2. Use that kubeconfig for every following command: export KUBECONFIG=$PWD/infra/local/bex.kubeconfig (or --kubeconfig). Never print its contents.
  3. Build and load the operator image (CAPD nodes can't pull local-only images):
    • ( cd lego/operator && make docker-build IMG=bex-operator:dev )
    • docker save bex-operator:dev -o /tmp/bex-op.tar
    • For each node (strip the node/ prefix — kubectl get nodes -o name returns node/<name> but docker cp/docker exec need the bare container name):
      for n in $(kubectl get nodes -o name | cut -d/ -f2); do
        docker cp /tmp/bex-op.tar "$n":/op.tar && docker exec "$n" ctr -n k8s.io images import /op.tar
      done
      
  4. ( cd lego/operator && make deploy IMG=bex-operator:dev ) — deploys to ns bex-system with BEX_RUNTIME=kubernetes. The bex-ssh-gateway IngressRouteTCP fails without Traefik CRDs — expected and harmless on the mock; everything else applies. Then kubectl apply -f deploy/gitops/base/operator-apps-rbac.yaml — the apps-namespace bex-operator-apps Role/RoleBinding is Argo-managed in prod and absent from the operator's kustomize config; without it the manager crashloops on "failed to wait for … caches to sync" (its namespace-scoped Secret/Job watches in default are forbidden; w1/043).
  5. Local-CAPD-only fixes (re-apply all three after every make deploy — it reverts them; w1/043):
    • Label the control-plane node into the platform pool (the manifest's nodeSelector is bex.co/pool=platform, and the operator must sit on the control-plane node because OrbStack/Calico can't route cross-node pod→apiserver; see docs/ADR004-app-deployment.md): kubectl label node <control-plane-node> bex.co/pool=platform --overwrite
    • Pin the operator to the control-plane node:
      kubectl -n bex-system patch deploy bex-controller-manager --type merge -p \
       '{"spec":{"template":{"spec":{"nodeSelector":{"node-role.kubernetes.io/control-plane":""},
        "tolerations":[{"key":"node-role.kubernetes.io/control-plane","effect":"NoSchedule"}]}}}}'
      
    • The manifest sets imagePullPolicy: Always, which can never be satisfied by the ctr-imported local image (ErrImagePull) — override it:
      kubectl -n bex-system patch deploy bex-controller-manager --type strategic -p \
       '{"spec":{"template":{"spec":{"containers":[{"name":"manager","imagePullPolicy":"IfNotPresent"}]}}}}'
      
  6. kubectl -n bex-system rollout status deploy/bex-controller-manager — wait for Ready.

Finish by reporting: node list, operator pod status, and the one-liners to deploy an App (/deploy-app) and to scale machines (/mock-cluster scale N).

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 5d ago First seen · 44 lines · 48 tokens per session scan A 6eb164b22fb9

Subscribe to this mod's changes

mock-cluster is a skill published in the GitHub repository bex-co/bex (420 stars, last pushed today), licensed Apache-2.0. It adds 48 tokens to every session and 987 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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