cursor-proxmox-mcp 1.2.0

Formal Cursor MCP server for Proxmox VE — VMs, LXC, storage, HA, firewall, access

cursor-proxmox-mcp

Formal Cursor ↔ Proxmox VE MCP integration — 155 tools covering QEMU VMs, LXC, unified guest power, storage admin, cluster/tasks, snapshots, backups (incl. scheduled jobs), migration, HA, firewall (incl. IPSet CIDRs), access control, replication, SDN (read), ACME (read), pools, and console tickets. v1.2.0 tags the post-1.1 line (LXC pct exec, guest auth, QOL sweep) plus wait_for_task failure-path coverage.

Repo: hackmods/cursor-proxmox-mcp

Docs: Setup guide · Wiki (docs/wiki/) · Publishing · Security · Contributing · API coverage · Changelog

MCP tools

Registered via tools/register.py (called from ProxmoxMCPServer._setup_tools()) — inventory locked by tools/inventory.py / tests/expected_tools.py (CI fails on drift).

Domain	Tools
Nodes	get_nodes, get_node_status, list_node_networks, get_node_subscription, list_node_certificates, get_node_report, list_node_services, get_node_time, wake_node
Cluster / tasks	get_cluster_status, get_next_vmid, get_task_status, list_tasks, wait_for_task, get_version, get_cluster_resources, get_cluster_log, get_cluster_options
QEMU	lifecycle + config (ISO/cloud-init/net on create/update) + get_vm_status, get_vm_rrd_data, console tickets
LXC	lifecycle + config + suspend/resume (CRIU warn) + get_lxc_status / get_lxc_network / get_lxc_rrd_data + VNC/SPICE/termproxy; ssh_public_keys on create; set_lxc_password / set_lxc_ssh_keys / execute_lxc_command via opt-in host SSH + pct exec (setup)
Guest (unified)	start/stop/shutdown/reboot/delete_guest, get_guest_status, get_guest_pending, move_guest_disk (guest_type)
Snapshots / Backups	snapshot CRUD/rollback; one-shot backup CRUD; scheduled list/create/delete_backup_job
Storage	list, content, list_os_templates, list_isos, download-url, definition CRUD
Migrate / HA	migrate_guest; HA groups + resources CRUD
Firewall	cluster + guest rules/options; aliases; IP sets + CIDR members; macros
Access	users, groups, roles, ACL, tokens, get_permissions, get_token_permissions
Replication	list/status/run/create/update/delete jobs
SDN	list zones/vnets/controllers/ipams/dns + apply_sdn
ACME	list plugins/accounts/directories (read)
Pools	list/get/create/update/delete

Suggested agent flow

1. get_next_vmid → list_os_templates / list_isos → list_node_networks
2. create_lxc / create_vm → wait_for_task → start
3. create_snapshot before risky changes → update_*_config → get_guest_pending → reboot if needed
4. migrate_guest / HA / firewall / access / replication as needed

Guest type unknown? Prefer unified tools (start_guest, stop_guest, shutdown_guest, reboot_guest, delete_guest, get_guest_status) with guest_type=qemu|lxc. Parallel *_vm / *_lxc names stay for existing prompts.

Installation

Prerequisites

• uv (recommended) or Python 3.10+
• Proxmox API token

Path 1 — uvx (recommended)

PyPI package name is cursor-proxmox-mcp (console scripts: cursor-proxmox-mcp, plus aliases proxmox-mcp-server / proxmox-mcp).

Note: The unrelated PyPI project proxmox-mcp-server is a different codebase. Always install cursor-proxmox-mcp.

# Install uv if needed:  pip install uv   OR   winget install astral-sh.uv

# After PyPI publish (GitHub Release → publish.yml):
uvx cursor-proxmox-mcp

# From a local checkout (dev / before first publish):
uvx --from . cursor-proxmox-mcp

Cursor MCP (published package — no checkout):

{
  "mcpServers": {
    "proxmox": {
      "command": "uvx",
      "args": ["cursor-proxmox-mcp"],
      "env": {
        "PROXMOX_MCP_CONFIG": "C:/Users/YOU/proxmox-config/config.json"
      }
    }
  }
}

From a local checkout, use "args": ["--from", "C:/Users/YOU/Projects/cursor-proxmox-mcp", "cursor-proxmox-mcp"] instead.

Why uvx: it resolves dependencies into an isolated ephemeral env so Cursor does not depend on a hand-managed venv/PYTHONPATH.

Path 2 — uv from source

git clone https://github.com/hackmods/cursor-proxmox-mcp.git
cd cursor-proxmox-mcp
uv venv
# Windows: .\.venv\Scripts\Activate.ps1
# Linux/macOS: source .venv/bin/activate
uv pip install -e ".[dev]"
cp proxmox-config/config.example.json proxmox-config/config.json
# Edit host + token, then:
uv run cursor-proxmox-mcp

Path 3 — pip fallback

python -m venv .venv
# activate venv
pip install -e ".[dev]"
# optional OpenAPI bridge: pip install -e ".[openapi]"
$env:PROXMOX_MCP_CONFIG="proxmox-config\config.json"   # PowerShell
python -m proxmox_mcp.server

Cursor MCP (direct Python — use absolute paths):

{
  "mcpServers": {
    "proxmox": {
      "command": "python",
      "args": ["-m", "proxmox_mcp.server"],
      "cwd": "C:/Users/YOU/Projects/cursor-proxmox-mcp",
      "env": {
        "PROXMOX_MCP_CONFIG": "C:/Users/YOU/Projects/cursor-proxmox-mcp/proxmox-config/config.json",
        "PYTHONPATH": "C:/Users/YOU/Projects/cursor-proxmox-mcp/src"
      }
    }
  }
}

Restart the proxmox MCP server in Cursor after pulling new tools. Manual launchers: start.bat (Windows) / start.sh (Unix) — prefer uvx cursor-proxmox-mcp in mcp.json.

Verify / local CI

.\scripts\ci-local.ps1

./scripts/ci-local.sh

Runs: editable install → entrypoint smoke → ruff → pytest → inventory floor (≥100 tools).

Troubleshooting

Symptom	Fix
spawn uvx ENOENT	Install uv (pip install uv or winget install astral-sh.uv), then restart Cursor
ModuleNotFoundError: proxmox_mcp	Use uvx/uv run, or set PYTHONPATH=.../src for plain python
PROXMOX_MCP_CONFIG ... must be set	Point env at proxmox-config/config.json (absolute path)
Auth OK but empty data / odd 403	Privilege Separation Yes without token ACL — see SETUP.md
403 on HA / firewall / keyctl	Token needs elevated role; prefer scoped mcp@pve over root@pam when possible
Tools missing in Cursor	Restart MCP server after git pull

First-time cluster wiring (token, privsep, Cursor JSON, example prompts): SETUP.md. LXC shell / runtime IP needs opt-in host SSH (authorized_keys, optional host_overrides, reload MCP): SETUP.md — SSH for LXC exec.

Configuration

Example proxmox-config/config.json:

{
  "proxmox": {
    "host": "PROXMOX_HOST",
    "port": 8006,
    "verify_ssl": false,
    "service": "PVE"
  },
  "auth": {
    "user": "USER@pve",
    "token_name": "TOKEN_NAME",
    "token_value": "TOKEN_VALUE"
  },
  "logging": {
    "level": "INFO",
    "format": "%(asctime)s - %(name)s - %(levelname)s - %(message)s",
    "file": "proxmox_mcp.log"
  }
}

Create the token in Proxmox UI: Datacenter → Permissions → API Tokens. See SETUP.md — API token & Privilege Separation for the full walkthrough.

Privilege Separation: leave Yes (default) and grant ACLs to the token (user@realm!tokenid). Setting it to No makes the token inherit the user’s full permissions (common lab shortcut; larger blast radius if leaked). Grant roles matching the tools you use (PVEAuditor, PVEVMAdmin, Datastore.*, Sys.Audit/Sys.Modify for HA/firewall/access).

Prefer "token_value": "${PROXMOX_TOKEN_VALUE}" in config and set the env var in Cursor MCP config so secrets stay out of the JSON file.

Security

This server can create/delete guests, change firewall/ACL, and run guest commands. Treat the API token like production infra credentials. Full policy: SECURITY.md.

Features

• Token auth via proxmoxer (JSON config + optional ${ENV} secret interpolation)
• Full guest lifecycle, snapshots, vzdump backups
• Storage content + definition CRUD + URL download
• Cluster HA, firewall (rules/aliases/ipsets), access/ACL/tokens
• Replication jobs, SDN read + apply, ACME read, pools
• Console ticket mint only (VNC/SPICE/termproxy) — no websocket proxy
• uvx / uv / pip / Docker (GHCR) install paths; optional .[openapi] for mcpo
• Local + GitHub CI (ruff + pytest + coverage + inventory + design invariants)

Planned (not implemented yet)

Phase C — heavy: SDN write CRUD, ACME order/renew, Ceph OSD/MON admin, cluster join/bootstrap, full VNC/SPICE websocket proxy, PBS direct admin, node reboot/shutdown — see coverage matrix and next-expansion.md.

Development

.\scripts\ci-local.ps1

After adding a tool: update definitions.py, README table, .cursor/research/proxmox-api-coverage.md, .cursor/research/next-expansion.md (if closing a planned row), and tests/expected_tools.py.

Status

• Formal multi-domain Proxmox API coverage (155 tools)
• Phase B + Phase D agent QOL tools
• v1.0 security hardening, code-design audit, full test suite
• uvx cursor-proxmox-mcp + PyPI/GHCR release workflow
• Local + GitHub CI with coverage + design invariants
• Phase C heavy/dangerous endpoints (documented only)
• Phase C heavy/dangerous endpoints (documented only)

License

MIT

Acknowledgments

Based on ProxmoxMCP / canvrno/ProxmoxMCP. Extended for Cursor IDE as a formal Proxmox VE integration.