MCPs
cert-manager-mcp-server

cert-manager-mcp-server

Manage and troubleshoot cert-manager resources with an MCP server interface.

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cert-manager-mcp-server provides an MCP-compliant server for managing and troubleshooting certificates, issuers, and Kubernetes contexts related to cert-manager. It exposes tools to list, inspect, and renew certificates, manage issuers, and switch Kubernetes contexts. The server is designed for integration with Model Context Protocol environments such as Claude Desktop, enabling robust automation and monitoring workflows around cert-manager-managed resources.

Key Features

MCP server compatibility

Certificate listing with filtering and pagination

Detailed certificate inspection

On-demand certificate renewal

Issuer and cluster issuer management

Namespace listing

Kubeconfig context listing and switching

Supports GKE authentication and context

Integration with Claude Desktop

Docker-based deployment

Use Cases

Automated monitoring of TLS certificate status across Kubernetes namespaces

Forcing certificate renewal before scheduled expiration

Auditing certificate and issuer configurations for compliance

Switching Kubernetes contexts programmatically for multi-cluster management

Listing all namespaces and their certificate resources

Troubleshooting certificate issuance or renewal failures

Integrating cert-manager resource management into AI-powered workflows

Managing issuer lifecycle and reviewing cluster configuration

Running in CI/CD pipelines for certificate and issuer checks

Supporting operations and SRE teams with automated cert-manager tool access

README

cert-manager-mcp-server

MCP server for management and troubleshooting of certificates and other resources managed by cert-manager.

Claude Desktop config:

json

{
  "mcpServers": {
    "cert-manager-mcp-server": {
      "command": "sh",
      "args": [
        "-c",
        "docker run -i --rm -v ~/.kube:/home/app/.kube:ro -v ~/.config/gcloud:/home/app/.config/gcloud piblokto/cert-manager-mcp-server:v0.0.5"
      ]
    }
  }
}

Claude Desktop config for GKE clusters:

json

{
  "mcpServers": {
    "cert-manager-mcp-server": {
      "command": "sh",
      "args": [
        "-c",
        "docker run -i --rm -v ~/.kube:/home/app/.kube:ro -v ~/.config/gcloud:/home/app/.config/gcloud -e CLOUDSDK_CORE_PROJECT=<DEFAULT_PROJECT_ID> -e CLOUDSDK_COMPUTE_REGION=<DEFAULT_COMPUTE_REGION> piblokto/cert-manager-mcp-server:v0.0.5"
      ]
    }
  }
}

Tools

This MCP server provides the following tools for interacting with cert-manager and Kubernetes resources:

Certificate Management

list_certificates - List certificates within a namespace or across all namespaces, with options for filtering expired certificates and pagination. You can also include domains for listed certificates with include_domains argument (defaults to False to make responses more compact)
get_certificate - Get detailed information about a specific certificate
renew_certificate - Force renewal of a certificate

Issuer Management

list_issuers - List issuers or cluster issuers with their statuses and configuration. Unlike list_certificates there are no pagination or filtering except for cluster/namespaced issuers and namespaces for Issuers.

Kubernetes Context Management

list_namespaces - List all namespaces in the cluster
list_contexts - List all available kubeconfig contexts
get_current_context - Get the currently active kubeconfig context
switch_context - Switch to a different kubeconfig context. Updates in-memory config

Available Tools

Tool Name	Description	Read-Only	Parameters
`list_certificates`	List certificates within a namespace or all namespaces, with filtering and pagination options	✅	`namespace_name`, `all_namespaces`, `include_domains`, `list_expired`, `cursor`, `page_size`
`get_certificate`	Get detailed information about a specific certificate	✅	`namespace_name`, `certificate_name`
`renew_certificate`	Force renewal of a certificate in a given namespace	❌	`namespace_name`, `certificate_name`
`list_issuers`	List issuers or cluster issuers with their statuses and configuration	✅	`list_cluster_issuers`, `all_namespaces`, `namespace_name`
`list_namespaces`	List all namespaces in the cluster	✅	None
`list_contexts`	List all available kubeconfig contexts	✅	None
`get_current_context`	Get the currently active kubeconfig context	✅	None
`switch_context`	Switch to a different kubeconfig context	✅	`ctx`

Star History

Repository Owner

pibblokto

User

Repository Details

Language Python

Default Branch main

Size 237 KB

Contributors 1

License Apache License 2.0

MCP Verified Nov 11, 2025

Programming Languages

Python

99.71%

Dockerfile

0.29%

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cert-manager-mcp-server

Key Features

Use Cases

README

cert-manager-mcp-server

Tools

Certificate Management

Issuer Management

Kubernetes Context Management

Available Tools

Star History

Repository Owner

Repository Details

Programming Languages

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