ArgoCD MCP Server

A Model Context Protocol (MCP) server for integrating ArgoCD GitOps continuous delivery tool with GenAI applications, enabling intelligent Kubernetes deployment management.

Features

• Comprehensive ArgoCD API Coverage:

  • Application Management: Create, sync, delete, rollback applications
  • Project Management: Configure projects, roles, and policies
  • Repository Management: Add/remove Git repositories, Helm charts
  • Cluster Management: Register and manage Kubernetes clusters
  • Sync Operations: Manual/auto sync, sync windows, hooks
  • Health Monitoring: Application health, sync status, resource tree
  • RBAC Management: Users, roles, policies, JWT tokens
  • GitOps Workflows: Automated deployments from Git commits
  • Multi-tenancy: Namespace isolation, project restrictions
  • Application Sets: Template-based multi-cluster deployments

• Authentication Methods:

  • JWT Token authentication
  • API Token authentication
  • OIDC/OAuth2 integration
  • LDAP authentication support

• Enterprise Features:

  • Multi-cluster support
  • Disaster recovery workflows
  • Progressive delivery (Canary, Blue-Green)
  • Automated rollback on failures
  • Audit logging and compliance
  • Resource optimization
  • Secret management integration

Installation

pip install argocd-mcp-server

Or install from source:

git clone https://github.com/asklokesh/argocd-mcp-server.git
cd argocd-mcp-server
pip install -e .

Configuration

Create a .env file or set environment variables:

# ArgoCD Connection
ARGOCD_SERVER=argocd.example.com
ARGOCD_AUTH_TOKEN=your_auth_token
ARGOCD_INSECURE=false

# Optional Settings
ARGOCD_GRPC_WEB=true
ARGOCD_TIMEOUT=30
ARGOCD_CLIENT_CERT=/path/to/cert.pem
ARGOCD_CLIENT_KEY=/path/to/key.pem

# Multi-Cluster Support
ARGOCD_PROD_SERVER=argocd-prod.example.com
ARGOCD_PROD_TOKEN=prod_token

ARGOCD_DEV_SERVER=argocd-dev.example.com
ARGOCD_DEV_TOKEN=dev_token

Quick Start

Basic Usage

from argocd_mcp import ArgoCDMCPServer

# Initialize the server
server = ArgoCDMCPServer()

# Start the server
server.start()

Claude Desktop Configuration

Add to your Claude Desktop config:

{
  "mcpServers": {
    "argocd": {
      "command": "python",
      "args": ["-m", "argocd_mcp.server"],
      "env": {
        "ARGOCD_SERVER": "argocd.example.com",
        "ARGOCD_AUTH_TOKEN": "your_auth_token"
      }
    }
  }
}

Available Tools

Application Management

List Applications

{
  "tool": "argocd_list_applications",
  "arguments": {
    "project": "default",
    "namespace": "argocd"
  }
}

Create Application

{
  "tool": "argocd_create_application",
  "arguments": {
    "name": "my-app",
    "project": "default",
    "source": {
      "repoURL": "https://github.com/org/repo.git",
      "path": "manifests",
      "targetRevision": "main"
    },
    "destination": {
      "server": "https://kubernetes.default.svc",
      "namespace": "production"
    },
    "syncPolicy": {
      "automated": {
        "prune": true,
        "selfHeal": true
      }
    }
  }
}

Sync Application

{
  "tool": "argocd_sync_application",
  "arguments": {
    "name": "my-app",
    "prune": true,
    "force": false,
    "strategy": {
      "hook": {
        "force": true
      }
    }
  }
}

Get Application Status

{
  "tool": "argocd_get_application_status",
  "arguments": {
    "name": "my-app",
    "refresh": true
  }
}

Rollback Application

{
  "tool": "argocd_rollback_application",
  "arguments": {
    "name": "my-app",
    "revision": "abc123"
  }
}

Project Management

Create Project

{
  "tool": "argocd_create_project",
  "arguments": {
    "name": "production",
    "description": "Production applications",
    "sourceRepos": ["https://github.com/org/*"],
    "destinations": [
      {
        "server": "https://kubernetes.default.svc",
        "namespace": "prod-*"
      }
    ],
    "clusterResourceWhitelist": [
      {"group": "*", "kind": "*"}
    ]
  }
}

Repository Management

Add Repository

{
  "tool": "argocd_add_repository",
  "arguments": {
    "url": "https://github.com/org/repo.git",
    "name": "my-repo",
    "type": "git",
    "username": "git-user",
    "password": "git-token",
    "insecure": false
  }
}

Add Helm Repository

{
  "tool": "argocd_add_helm_repository",
  "arguments": {
    "url": "https://charts.example.com",
    "name": "my-charts",
    "type": "helm",
    "username": "helm-user",
    "password": "helm-password"
  }
}

Cluster Management

Add Cluster

{
  "tool": "argocd_add_cluster",
  "arguments": {
    "name": "production-cluster",
    "server": "https://k8s-prod.example.com",
    "config": {
      "bearerToken": "cluster-token",
      "tlsClientConfig": {
        "insecure": false,
        "caData": "base64-encoded-ca"
      }
    }
  }
}

Application Sets

Create ApplicationSet

{
  "tool": "argocd_create_applicationset",
  "arguments": {
    "name": "multi-cluster-app",
    "generators": [
      {
        "clusters": {},
        "selector": {
          "matchLabels": {
            "environment": "production"
          }
        }
      }
    ],
    "template": {
      "metadata": {
        "name": "{{cluster}}-app"
      },
      "spec": {
        "project": "default",
        "source": {
          "repoURL": "https://github.com/org/repo.git",
          "path": "{{cluster}}"
        },
        "destination": {
          "server": "{{server}}",
          "namespace": "default"
        }
      }
    }
  }
}

Health and Monitoring

Get Application Health

{
  "tool": "argocd_get_application_health",
  "arguments": {
    "name": "my-app"
  }
}

Get Resource Tree

{
  "tool": "argocd_get_resource_tree",
  "arguments": {
    "name": "my-app"
  }
}

Advanced Configuration

Multi-Cluster GitOps

from argocd_mcp import ArgoCDMCPServer, ClusterConfig

# Configure multiple ArgoCD instances
clusters = {
    "production": ClusterConfig(
        server="argocd-prod.example.com",
        auth_token="prod_token",
        default_namespace="argocd"
    ),
    "staging": ClusterConfig(
        server="argocd-staging.example.com",
        auth_token="staging_token",
        default_namespace="argocd-staging"
    ),
    "development": ClusterConfig(
        server="argocd-dev.example.com",
        auth_token="dev_token",
        default_namespace="argocd-dev"
    )
}

server = ArgoCDMCPServer(clusters=clusters, default_cluster="production")

Progressive Delivery

# Configure progressive delivery strategies
progressive_config = {
    "canary": {
        "steps": [
            {"setWeight": 10},
            {"pause": {"duration": "5m"}},
            {"setWeight": 30},
            {"pause": {"duration": "5m"}},
            {"setWeight": 50},
            {"pause": {"duration": "5m"}},
            {"setWeight": 100}
        ]
    },
    "blueGreen": {
        "activeService": "app-active",
        "previewService": "app-preview",
        "autoPromotionEnabled": false
    }
}

server = ArgoCDMCPServer(progressive_config=progressive_config)

Disaster Recovery

from argocd_mcp import ArgoCDMCPServer, DisasterRecoveryConfig

dr_config = DisasterRecoveryConfig(
    backup_enabled=True,
    backup_schedule="0 2 * * *",  # Daily at 2 AM
    backup_location="s3://backups/argocd",
    restore_priority=["production", "staging", "development"]
)

server = ArgoCDMCPServer(dr_config=dr_config)

Integration Examples

See the examples/ directory for complete integration examples:

• basic_gitops.py - Basic GitOps workflows
• multi_cluster_deployment.py - Multi-cluster application deployment
• progressive_delivery.py - Canary and blue-green deployments
• disaster_recovery.py - Backup and restore workflows
• genai_gitops.py - AI-powered GitOps automation
• security_scanning.py - Integration with security tools

Security Best Practices

1. Use service accounts with minimal permissions
2. Enable RBAC with proper policies
3. Implement network policies for cluster isolation
4. Use sealed secrets or external secret operators
5. Enable audit logging for compliance
6. Implement admission controllers for policy enforcement
7. Regular security scanning of images and manifests

Error Handling

The server provides detailed error information:

try:
    result = server.execute_tool("argocd_sync_application", {
        "name": "my-app"
    })
except ArgoCDError as e:
    print(f"ArgoCD error: {e.error_code} - {e.message}")
    if e.error_code == "OutOfSync":
        print("Application is out of sync")
    elif e.error_code == "ComparisonError":
        print("Error comparing application state")

Performance Optimization

1. Use application sets for similar apps
2. Enable resource caching in ArgoCD
3. Implement sync windows to control deployment times
4. Use webhook notifications instead of polling
5. Optimize manifest generation with Helm/Kustomize

Troubleshooting

Common Issues

1. Sync failures

   • Check application logs
   • Verify repository access
   • Review resource quotas

2. Authentication errors

   • Verify token validity
   • Check RBAC policies
   • Review server connectivity

3. Performance issues

   • Check ArgoCD server resources
   • Review application count
   • Optimize manifest size

Contributing

Contributions are welcome! Please read our contributing guidelines and submit pull requests.

License

MIT License - see LICENSE file for details