delete_credential

A destructive tool on the n8n MCP server.

SERVERn8n MCP Server SOURCEandhit-r/n8n-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/andhit-r-n8n-mcp/delete-credential.md

WHAT IT DOES

What delete_credential does on n8n MCP Server

AI agents call delete_credential to permanently remove resources in n8n MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_credential is rated Critical

Deleting credentials cannot be undone and removes authentication material that workflows depend on. This is a destructive operation with high blast radius—an agent could lock out legitimate users from their workflows or integrations by deleting shared credentials. While not as severe as deleting workflows themselves, credentials are critical infrastructure.

From the tool's definition Tool name is 'delete_credential' with no descriptive text provided. The verb 'delete' combined with 'credential' (a sensitive authentication artifact) indicates irreversible removal of data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_credential safely

PolicyLayer is an MCP gateway: it sits between your AI agents and n8n MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_credential, this is the rule to start with:

delete_credential Hidden

delete_credential is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_credential"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect n8n MCP Server, apply this rule, and every delete_credential call is checked against it from then on.

FAQ

Questions about delete_credential

What does the delete_credential tool do? +

delete_credential is a destructive tool on the n8n MCP Server MCP server. It is categorised as a Destructive tool in the n8n MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_credential? +

Register the n8n MCP Server MCP server in PolicyLayer and add a rule for delete_credential: 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 n8n MCP Server. Nothing to install.

What risk level is delete_credential? +

delete_credential is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_credential? +

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

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

delete_credential is provided by the n8n MCP Server MCP server (andhit-r/n8n-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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