vault_seal

Encrypt a service

SERVER0nmcp SOURCE0nmcp

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/io-github-0nork-0nmcp/vault-seal.md

WHAT IT DOES

What vault_seal does on 0nmcp

AI agents use vault_seal to create or update resources in 0nmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 0nmcp environment.

RISK

Why vault_seal is rated Medium

'Vault seal' with 'encrypt a service' suggests this tool encrypts/seals a vault or service, which is a write/configuration operation that could make a service inaccessible. This is potentially highly impactful (sealing a vault can lock out access to secrets), but it is technically reversible (unsealing is possible), so it falls under Write rather than Destructive.

From the tool's definition Encrypt a service

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs vault_seal safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 0nmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For vault_seal, this is the rule to start with:

vault_seal Rate-limited

vault_seal 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": {
    "vault_seal": {
      "limits": [
        {
          "counter": "vault_seal_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 0nmcp, apply this rule, and every vault_seal call is checked against it from then on.

FAQ

Questions about vault_seal

What does the vault_seal tool do? +

Encrypt a service. It is categorised as a Write tool in the 0nmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vault_seal? +

Register the 0n MCP server in PolicyLayer and add a rule for vault_seal: 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 0nmcp. Nothing to install.

What risk level is vault_seal? +

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

Can I rate-limit vault_seal? +

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

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

vault_seal is provided by the 0n MCP server (0nmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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