Atlas / MCP servers / bright8192 / Esxi

EsxiSAFE

mcp/bright8192/esxi

A VMware ESXi/vCenter management server based on MCP (Model Control Protocol), providing simple REST API interfaces for virtual machine management.

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
7 4r · 2w · 1d
Transport
—
License
MIT
Stars
64
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

A VMware ESXi/vCenter management server based on MCP (Model Control Protocol), providing simple REST API interfaces for virtual machine management.

Features

  • Support for ESXi and vCenter Server connections
  • Real-time communication based on SSE (Server-Sent Events)
  • RESTful API interface with JSON-RPC support
  • API key authentication
  • Complete virtual machine lifecycle management
  • Real-time performance monitoring
  • SSL/TLS secure connection support
  • Flexible configuration options (YAML/JSON/Environment Variables)

Core Functions

  • Virtual Machine Management
  • Create VM
  • Clone VM
  • Delete VM
  • Power On/Off operations
  • List all VMs
  • Performance Monitoring
  • CPU usage
  • Memory usage
  • Storage usage
  • Network traffic statistics

Requirements

  • Python 3.7+
  • pyVmomi
  • PyYAML
  • uvicorn
  • mcp-core (Machine Control Protocol core library)

Quick Start

  1. Install dependencies:
pip install pyvmomi pyyaml uvicorn mcp-core
  1. Create configuration file config.yaml:
vcenter_host: "your-vcenter-ip"
vcenter_user: "[email protected]"
vcenter_password: "your-password"
datacenter: "your-datacenter"        # Optional
cluster: "your-cluster"              # Optional
datastore: "your-datastore"          # Optional
network: "VM Network"                # Optional
insecure: true                       # Skip SSL certificate verification
api_key: "your-api-key"             # API access key
log_file: "./logs/vmware_mcp.log"   # Log file path
log_level: "INFO"                    # Log level
  1. Run the server:
python server.py -c config.yaml

API Interface

Authentication

All privileged operations require authentication first:

POST /sse/messages
Authorization: Bearer your-api-key

Main Tool Interfaces

  1. Create VM
{
"name": "vm-name",
"cpu": 2,
"memory": 4096,
"datastore": "datastore-name",
"network": "network-name"
}
  1. Clone
Read from source at commit 67a22eeaaa06OBSERVED · 2026-10-07
02

Exposed tools (7)

4 read · 2 write · 1 destructive. Blast radius: 1 tool can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.

ToolRiskDescription
authenticatewriteAuthenticate using API key to enable privileged operations
cloneVMreadClone a virtual machine from a template or existing VM
createVMwriteCreate a new virtual machine
deleteVMdestructiveDelete a virtual machine
listVMsreadList all virtual machines
powerOffreadPower off a virtual machine
powerOnreadPower on a virtual machine
03

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfaceWARN
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (3 observation(s))
Network
declared (3 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (2)

MEDIUMFilesystem / path · mcp.destructive_tools · CWE-22, CWE-59
deleteVM
Why it matters. 1 tool(s) can delete or overwrite
Fix. prefer a read-only mode or scoped tokens; the page states the blast radius
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
requirements.txt
pyvmomi, pyyaml, uvicorn, mcp, pytest
Why it matters. 5 requirement(s) not pinned with ==
Fix. pin exact versions

Gates applied: no_behavioural_pass.

Audited 2026-10-07 · audit v0.4.1 · source sha 67a22eeaaa06full audit observations/trust-audit/mcp-server/bright8192__esxi.json · Report an issue / request a re-scan
04

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-0767a22eeaaa06SAFEB89first audit
05

Questions

What is the Esxi MCP server?

A VMware ESXi/vCenter management server based on MCP (Model Control Protocol), providing simple REST API interfaces for virtual machine management.

What tools does Esxi expose?

7 in total: 4 read-only, 2 that write, and 1 that can delete or overwrite (deleteVM). Every one is listed on this page with its risk.

Is Esxi safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B. Separately from the audit: 1 of its tools can destroy data, so scope the token you give it to what you actually need.

What credentials does Esxi need?

No credential environment variables were found in its source, so it appears to need none.

How current is this page?

The grade is for one exact copy of the source (67a22eeaaa06), read on 2026-10-07. The repository is watched and re-audited when it changes.

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