regenerate_keys

Regenerate the S3 access keys for an Object Storage instance.

SERVERVultr MCP SOURCErsp2k/mcp-vultr

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/rsp2k-mcp-vultr/regenerate-keys.md

WHAT IT DOES

What regenerate_keys does on Vultr MCP

AI agents use regenerate_keys to create or update resources in Vultr MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vultr MCP environment.

RISK

Why regenerate_keys is rated Medium

Regenerating S3 access keys is a Write operation that creates new credentials and invalidates the old ones. This is high severity because it immediately breaks any existing applications or services using the old keys, causing potential service disruption, while also being a security-sensitive operation that could be misused to lock out legitimate users from their object storage.

From the tool's definition Regenerate the S3 access keys for an Object Storage instance

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs regenerate_keys safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Vultr MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For regenerate_keys, this is the rule to start with:

regenerate_keys Rate-limited

regenerate_keys stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "regenerate_keys": {
      "limits": [
        {
          "counter": "regenerate_keys_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Vultr MCP, apply this rule, and every regenerate_keys call is checked against it from then on.

FAQ

Questions about regenerate_keys

What does the regenerate_keys tool do? +

Regenerate the S3 access keys for an Object Storage instance. It is categorised as a Write tool in the Vultr MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on regenerate_keys? +

Register the Vultr MCP server in PolicyLayer and add a rule for regenerate_keys: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Vultr MCP. Nothing to install.

What risk level is regenerate_keys? +

regenerate_keys is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit regenerate_keys? +

Yes. Add a rate_limit block to the regenerate_keys rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block regenerate_keys completely? +

Set action: deny in the PolicyLayer policy for regenerate_keys. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides regenerate_keys? +

regenerate_keys is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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