Proxmox MCP Tools

Proxmox MCP Tools Reference

AI Agent Skill: Complete reference for 92 Proxmox Virtual Environment management tools via Model Context Protocol

Overview

This skill teaches AI agents how to use the @bldg-7/proxmox-mcp server, which provides 92 comprehensive tools for managing Proxmox VE infrastructure through the Model Context Protocol (MCP).

What you'll learn:

• How to connect to Proxmox VE via MCP
• 92 tools organized into 14 functional domains
• Permission model (basic vs elevated operations)
• Common workflows and patterns
• Troubleshooting API quirks

Target audience: AI agents managing Proxmox infrastructure, automating VM/LXC provisioning, monitoring cluster health, or performing operational tasks.

Quick Start

Connection Setup

Required Environment Variables:

PROXMOX_HOST=pve.example.com
PROXMOX_TOKEN_NAME=mytoken
PROXMOX_TOKEN_VALUE=abc123-def456-ghi789

Optional Configuration:

PROXMOX_USER=root@pam          # Default: root@pam
PROXMOX_SSL_MODE=verify         # strict|verify|insecure (default: strict)
PROXMOX_SSL_CA_CERT=/path/ca.pem # CA cert (PEM) trusted in verify mode — required for self-signed certs
PROXMOX_ALLOW_ELEVATED=true     # Enable create/modify/delete (default: false)
PROXMOX_PORT=8006               # Default: 8006
PROXMOX_LOG_LEVEL=info          # trace|debug|info|warn|error|fatal (default: info)

SSH Configuration (for proxmox_lxc_exec):

PROXMOX_SSH_ENABLED=true        # Enable SSH-based LXC exec (default: false)
PROXMOX_SSH_HOST=pve.example.com # SSH host (falls back to PROXMOX_HOST)
PROXMOX_SSH_PORT=22             # SSH port (default: 22)
PROXMOX_SSH_USER=root           # SSH username (default: root)
PROXMOX_SSH_KEY_PATH=~/.ssh/id_rsa # Path to SSH private key (required when SSH enabled)
PROXMOX_SSH_NODE=pve1           # Proxmox node name (required when SSH enabled)
PROXMOX_SSH_HOST_KEY_FINGERPRINT=sha256:... # Optional host key verification

Permission Model

92 tools total — read operations are basic; create/modify/delete operations require elevated permissions (many tools are mixed: elevation depends on the action)

SSL Modes

• strict: Full certificate verification (production)
• verify: Like strict, plus trusts the CA from PROXMOX_SSL_CA_CERT — set it for self-signed certificates; without it, identical to strict
• insecure: No verification (development only)

Tool Categories

Total: 92 tools

Common Workflows

1. Create and Configure a VM

1. proxmox_get_next_vmid → Get available VM ID
2. proxmox_create_vm → Create VM with basic config
3. proxmox_vm_disk → Attach storage
4. proxmox_guest_network → Configure network
5. proxmox_guest_start → Power on
6. proxmox_guest_status → Verify running

2. Clone VM for Testing

1. proxmox_guest_config → Review source VM
2. proxmox_guest_snapshot → Snapshot before clone
3. proxmox_guest_clone → Create clone (full or linked)
4. proxmox_guest_start → Start cloned VM

3. Backup and Restore

# Backup
1. proxmox_backup → Create backup to storage
2. proxmox_backup → Verify backup exists

# Restore
1. proxmox_backup → Find backup file
2. proxmox_backup → Restore to new/existing VM

4. Migrate VM Between Nodes

1. proxmox_node → List available target nodes
2. proxmox_guest_status → Check VM is running
3. proxmox_guest_migrate → Live or offline migration
4. proxmox_guest_status → Verify on new node

5. Configure HA for Critical VMs

1. proxmox_ha_group → Define node group
2. proxmox_ha_resource → Add VM to HA
3. proxmox_ha_resource → Monitor HA state

6. Monitor Cluster Health

1. proxmox_cluster → Overall cluster state
2. proxmox_node → Node-level health
3. proxmox_node_task → Recent operations
4. proxmox_ceph → Ceph cluster (if used)

7. Manage Storage

1. proxmox_storage_config → Available storage
2. proxmox_storage_content → Browse content
3. proxmox_storage_content → Upload ISO/template
4. proxmox_storage_content → Clean old backups

More workflows: See proxmox-workflows.md

Troubleshooting Quick Reference

1. Connection Refused

Symptom: ECONNREFUSED or timeout
Fix: Verify PROXMOX_HOST, check port 8006, firewall rules

2. Authentication Failed

Symptom: 401 Unauthorized
Fix: Verify token name/value, ensure token has permissions in Proxmox

3. SSL Certificate Errors

Symptom: UNABLE_TO_VERIFY_LEAF_SIGNATURE
Fix: Use PROXMOX_SSL_MODE=verify for self-signed certs

4. Permission Denied

Symptom: 🚫 Permission Denied
Fix: Set PROXMOX_ALLOW_ELEVATED=true for create/modify/delete operations

5. VM Not Found (500 instead of 404)

Symptom: API returns 500 error for missing VM
Fix: This is a Proxmox API quirk - treat 500 as "not found" in some contexts

More troubleshooting: See proxmox-troubleshooting.md

Tool Response Format

All tools return structured MCP responses:

Success:

{
  "content": [{"type": "text", "text": "✅ Operation successful\n\n• Details..."}],
  "isError": false
}

Error:

{
  "content": [{"type": "text", "text": "❌ Error: Reason..."}],
  "isError": true
}

Permission Denied:

{
  "content": [{"type": "text", "text": "🚫 Permission Denied: Set PROXMOX_ALLOW_ELEVATED=true"}],
  "isError": true
}

References

Domain-Specific Documentation

• proxmox-nodes.md - Node management, network config, system operations (47 tools)
• proxmox-vm.md - QEMU VM operations (26 tools)
• proxmox-lxc.md - LXC container operations (20 tools)
• proxmox-vm-lxc-shared.md - Shared VM/LXC operations (22 tools)
• proxmox-snapshots-backups.md - Snapshots and backups (14 tools)
• proxmox-storage.md - Storage management (16 tools)
• proxmox-networking.md - SDN configuration (20 tools)
• proxmox-cluster.md - Cluster operations (54 tools)
• proxmox-access-control.md - Users, roles, ACLs, API tokens (25 tools)
• proxmox-ceph.md - Ceph storage cluster (16 tools)
• proxmox-pools.md - Resource pools (5 tools)
• proxmox-certificates.md - Certificate management (7 tools)
• proxmox-acme.md - ACME account and plugin management (8 tools)
• proxmox-notifications.md - Notification targets (5 tools)

Operational Guides

• proxmox-workflows.md - Common operational patterns
• proxmox-troubleshooting.md - API quirks and solutions

Usage Tips

1. Always check permissions: Use basic tools first, only enable elevated when needed
2. Verify before destructive ops: Use get_vm_status before delete_vm
3. Use snapshots: Create snapshot before major changes
4. Monitor tasks: Use get_node_tasks to track long-running operations
5. Handle 500 errors: Proxmox sometimes returns 500 instead of 404 - check context
6. SSL mode for self-signed: Most Proxmox installations use self-signed certs - use verify mode

License

MIT License - Part of @bldg-7/proxmox-mcp package