MCTL Platform Operations

Skill for managing services on the mctl Kubernetes platform via MCP connector.

Overview

mctl is a self-service Kubernetes platform. You interact with it through 30 MCP tools
(prefixed mctl_*). Every write operation triggers an Argo Workflow and produces a git commit.

MCP Server URL: https://api.mctl.ai/mcp

Architecture

User prompt → Claude → MCP tool call → mctl-api → Argo Workflow → GitOps commit → ArgoCD → K8s

• Builds: GitHub Actions (docker build+push to ghcr.io/mctlhq/)
• Config: Helm values in git → ArgoCD auto-sync
• Secrets: HashiCorp Vault → ExternalSecrets → K8s Secrets
• Domains: auto {team}-{service}.mctl.ai (primary only — the .mctl.me mirror was retired 2026-08-28. That domain does not simply answer 410: a browser gets a 301 to the matching .mctl.ai host, and only bot-like User-Agents get 410, because the redirect is performed by the mctl-landing-form worker rather than by a zone rule)
• Logs: Loki (query via mctl_get_service_logs)

Quick Start

Create workspace + deploy a service

mctl_whoami                    → check identity
mctl_create_tenant("my-team")  → provision workspace
mctl_deploy_service(
  action="onboard",
  team_name="my-team",
  component_name="hello-world",
  dockerfile_repo="user/hello-world",
  git_tag="v1.0.0"
)
→ Service at https://my-team-hello-world.mctl.ai

Deploy OpenClaw (AI Gateway)

mctl_deploy_service(
  action="onboard",
  team_name="my-team",
  component_name="openclaw",
  dockerfile_repo="openclaw/openclaw",
  git_tag="main",
  service_template="openclaw"
)
→ Dashboard at https://my-team-openclaw.mctl.ai/#token={auto-generated}

The openclaw template pre-configures: 1Gi memory, 5min startup probe,
gateway config (LAN bind, token auth, trusted K8s proxies), Control UI enabled.

Tool Reference

Identity & Workspace

Tool	Description
mctl_whoami	Your user ID, teams, admin status
mctl_create_tenant(tenant_name)	Create workspace (1 per user)
mctl_get_tenant(name)	Workspace details, members, quotas
mctl_delete_tenant(tenant_name)	⚠️ Delete workspace permanently

Service Lifecycle

Tool	Description
mctl_deploy_service(action, team, component, repo, tag)	Onboard / deploy / update-config
mctl_get_service_status(team, service)	Sync state + health
mctl_get_service_config(team, service)	Full config from GitOps
mctl_get_service_logs(team, service, lines, since)	Logs from Loki
mctl_rollback_service(team, component, target_tag)	Revert to previous tag
mctl_scale_service(team, component, autoscaling_enabled)	HPA configuration
mctl_retire_service(team, component)	⚠️ Delete service permanently

Repository Management

Tool	Description
mctl_list_repos(team)	Available repos
mctl_sync_repos(team)	Discover new repos from GitHub App
mctl_grant_repo_access(team, repo)	Get GitHub App install URL

Preview Environments

Tool	Description
mctl_create_preview(team, component, image_tag)	Ephemeral env (24h TTL)
mctl_list_previews(team)	Active previews
mctl_delete_preview(team, component, preview_id)	Remove preview

Custom Domains

Tool	Description
mctl_add_custom_domain(team, service, domain)	Add custom domain
mctl_verify_domain(team, service)	Check DNS verification (TXT challenge, CNAME fallback)
mctl_list_domains(team)	All domains + status
mctl_remove_custom_domain(team, service, domain)	Remove domain

Verification checks a TXT record at _mctl-challenge.<domain> first — this
works even when the domain is proxied through Cloudflare, which rewrites
A/CNAME answers but never TXT. An unproxied CNAME to
{team}-{service}.mctl.ai is still accepted as a fast path when no proxy
sits in front of the domain.

Custom domains are for a tenant's own domain. A hostname under the platform
domain (*.mctl.ai) is rejected by the workflow: add it to ingress.hosts and
ingress.tls[].hosts in platform-gitops/services/{team}/{service}/values.yaml
and open a PR, the way tg.mctl.ai is declared.

Database

Tool	Description
mctl_provision_database(team, app)	PostgreSQL on shared CNPG cluster

Credentials auto-injected: DATABASE_URL, DB_HOST, DB_PORT, DB_USER, DB_PASSWORD, DB_NAME.

Monitoring & Audit

Tool	Description
mctl_get_resource_usage(team)	CPU, memory, pods vs quotas
mctl_get_workflow_status(workflow_name)	Workflow progress + logs
mctl_list_workflows(team)	Recent workflow runs
mctl_list_recent_operations	Audit log (last 50)
mctl_list_operations	All available operations
mctl_get_operation(name)	Operation parameter schema

Deploy Actions Explained

Action	When	What happens
onboard	First deploy	Build image → create Helm manifests → commit to GitOps → ArgoCD sync
deploy	Version update	Rebuild image → update image tag → ArgoCD sync
update-config	Env/secret change	Update values.yaml only → ArgoCD sync (no rebuild)

Service Templates

Template	Port	Memory	Special Config
default	8080	256Mi	Standard HTTP service
openclaw	18789	1Gi	Gateway config ConfigMap, 5min startup probe, NODE_OPTIONS=--max-old-space-size=768

Repo Access Patterns

1. Org repos (mctlhq/*) → automatic via GitHub App
2. User public repos → install GitHub App via mctl_grant_repo_access URL → mctl_sync_repos
3. External public repos (e.g. openclaw/openclaw) → deploy directly, no registration needed
4. Private external repos → store PAT in Vault: secret/data/teams/{team}/{service}/repo-pat → {"pat": "ghp_..."}

Troubleshooting

Service not starting

mctl_get_service_status → check if Synced/Healthy
mctl_get_service_logs(since="15m", lines="200") → look for errors
mctl_get_resource_usage → check quota headroom

Build failed

mctl_get_workflow_status(workflow_name) → read build logs

Common causes: Dockerfile error, repo not accessible, out of memory during build.

OOM / Restart loop

Check mctl_get_service_logs for "OOMKilled" or exit code 137.
Fix: redeploy with higher memory via update-config or use appropriate service template.

Safety Rules

• Always confirm before calling mctl_retire_service or mctl_delete_tenant — these are irreversible
• Track workflows: every write op returns workflow_name — call mctl_get_workflow_status to report result
• Team-scoped: you can only access workspaces the user belongs to
• All operations produce git commits → full audit trail