vsphere

A technical guide to how a collector connects to VMware vSphere, the virtualization platform managed through vCenter or standalone ESXi hosts.

In plain words
What is it for?
Use it when configuring, debugging, or extending vSphere inventory collection through the govmomi library and Kubernetes Secrets.
Why use it?
It clarifies authentication, TLS checks, endpoint validation, live change collection, retries, timeouts, and the vSphere objects being tracked.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/kubev2v/forklift-console-plugin/vsphere
Clone the repo
git clone --depth 1 https://github.com/kubev2v/forklift-console-plugin

Made for: Cursor.

Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,145 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00018 $0.03145
Opus 5 $0.00009 $0.01572
Sonnet 5 $0.00004 $0.00629
Haiku 4.5 $0.00002 $0.00314

Measured 2d ago against content hash 60ae5d4cdd5c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vsphere scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/backend/providers/vsphere.mdc · 261 lines

How it starts

The opening of the file, as written. The whole thing — 261 lines — stays where its author put it; the contents beside it link to each section on GitHub.

vSphere Provider

Analyzed from commit: 412c71822 on 2026-05-04

Inventory Collection

Connection & Authentication

The collector uses the govmomi library to connect to vCenter or standalone ESXi hosts.

Credentials come from a Kubernetes Secret with these keys:

  • user — vCenter/ESXi username
  • password — vCenter/ESXi password

TLS thumbprint comes from provider.Status.Fingerprint. If insecureSkipVerify is not set in the secret, TLS is verified and the thumbprint is computed from the server certificate.

SDK endpoint validation: The provider's spec.settings["sdkEndpoint"] value (vCenter or ESXI) is checked against the actual server type. Mismatches fail the connection.

Collection Mechanism

The collector uses vSphere's PropertyCollector with WaitForUpdatesEx — a long-polling mechanism that blocks until the server reports changes.

Connect → Create PropertyCollector → Create Filter → WaitForUpdatesEx loop

Key constants:

  • RetryDelay: 5 seconds between reconnection attempts
  • MaxObjectUpdates: 10,000 objects per update batch
  • ConnectionTimeout: 30 seconds

Tracked vSphere object types:

vSphere Type Model Type Notes
Folder Folder Hierarchy container
Datacenter Datacenter Top-level organizational unit
ClusterComputeResource Cluster Also handles standalone ComputeResource (variant)
HostSystem Host ESXi host
Network Network Standard network (variant=Standard)
OpaqueNetwork Network NSX-T network (variant=OpaqueNetwork)
DistributedVirtualPortgroup Network DVS port group (variant=DvPortGroup)
VmwareDistributedVirtualSwitch Network DVS switch (variant=DvSwitch)
Datastore Datastore Storage
VirtualMachine VM VMs — templates are excluded from API responses

Parity: After the first complete WaitForUpdatesEx response (not truncated), parity=true is set and model watches begin.

Read the full file on GitHub · 261 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 261 lines · 18 tokens per session scan A 60ae5d4cdd5c

Subscribe to this mod's changes

vsphere is a cursor rule published in the GitHub repository kubev2v/forklift-console-plugin (11 stars, last pushed 3d ago), licensed Apache-2.0. It adds 18 tokens to every session and 3,145 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.