vaultwarden_backup_info

Report the size and modification time of the Vaultwarden data directory (for backup freshness checks). Does NOT read vault contents.

SERVERCrow SOURCEkh0pper/crow

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/kh0pper-crow/vaultwarden-backup-info.md

WHAT IT DOES

What vaultwarden_backup_info does on Crow

AI agents call vaultwarden_backup_info to retrieve information from Crow without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why vaultwarden_backup_info is rated Low

This tool queries filesystem metadata (directory size and modification timestamp) without accessing, modifying, or deleting data. It provides information for backup monitoring purposes only. The explicit statement that it does not read vault contents confirms it has no access to sensitive application data.

From the tool's definition Tool description states it 'Report[s] the size and modification time of the Vaultwarden data directory' and explicitly clarifies 'Does NOT read vault contents.' These characteristics indicate read-only metadata retrieval.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs vaultwarden_backup_info safely

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

vaultwarden_backup_info Allowed

vaultwarden_backup_info is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vaultwarden_backup_info": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about vaultwarden_backup_info

What does the vaultwarden_backup_info tool do? +

Report the size and modification time of the Vaultwarden data directory (for backup freshness checks). Does NOT read vault contents. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on vaultwarden_backup_info? +

Register the Crow MCP server in PolicyLayer and add a rule for vaultwarden_backup_info: 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 Crow. Nothing to install.

What risk level is vaultwarden_backup_info? +

vaultwarden_backup_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit vaultwarden_backup_info? +

Yes. Add a rate_limit block to the vaultwarden_backup_info 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 vaultwarden_backup_info completely? +

Set action: deny in the PolicyLayer policy for vaultwarden_backup_info. 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 vaultwarden_backup_info? +

vaultwarden_backup_info is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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