FastMCP 3.4.4+ server and React companion webapp for Kubernetes cluster orchestration and Minikube automation
Server has 14 tools with consistent naming (verb_noun pattern: k8s_*, minikube_*) and descriptions present for all. However, descriptions are often generic (10-50 chars) and lack actionable context. Input schemas are visible but sparse: most tools have minimal parameters with basic type info. Output schemas are undocumented, responses are free-text markdown strings rather than structured objects. Error handling is minimal (generic 'Error: {error}' messages). No parameter validation guidance, no enum constraints, no pagination support despite list tools. Security concerns: k8s_apply_yaml accepts arbitrary YAML (injection risk), destructive tools (minikube_delete) lack confirmation patterns. Composition is reasonable (single responsibility per tool), but output format (markdown strings) prevents downstream tool chaining.
Apply a YAML configuration string to create or update cluster resources.
Check connection status and active context details of the cluster.
Scale replicas of a Deployment.
List ingress routing rules in a namespace.
List cluster nodes with health, capacity, and resource statistics. Returns node statuses (Ready/NotReady), version, CPU, and Memory.
Describe a pod in detail, combining specifications and recent event logs. Useful for troubleshooting CrashLoopBackOff or Pending pod states.
List pods in a specific namespace.
All tools return free-text markdown strings instead of structured JSON objects. Prevents downstream tool chaining, forces LLM to parse unstructured output, wastes tokens, and increases hallucination risk.
k8s_apply_yaml accepts arbitrary YAML strings with no validation, sanitization, or dry-run option. Injection risk and no confirmation before destructive operations.
Destructive tools (minikube_delete, k8s_apply_yaml) lack confirmation or dry-run patterns. Agents can accidentally destroy clusters without safeguards.
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | D | 55 | <=2025-11-25 | v2 |
Fetch stdout/stderr logs from a pod container.
Trigger a rolling update rollout restart for a Deployment.
List services in a namespace.
Delete the local Minikube cluster (destructive).
Start the local Minikube cluster.
Check status of Minikube running state (running, stopped, paused).
Stop the local Minikube cluster.
List tools (k8s_pod_list, k8s_service_list, k8s_ingress_list) lack pagination parameters (limit, offset, page_size) and return unbounded results. Large namespaces will blow context windows.
Error messages are generic ('Error: {error}') with no recovery guidance. LLM cannot determine if error is retryable, user-fixable, or fatal.