get_credential

A read tool on the n8n MCP server.

SERVERn8n MCP Server SOURCEandhit-r/n8n-mcp

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/andhit-r-n8n-mcp/get-credential.md

WHAT IT DOES

What get_credential does on n8n MCP Server

AI agents call get_credential to retrieve information from n8n MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_credential is rated Low

Credentials are sensitive authentication material. Retrieval of credentials via 'get_credential' is a Read operation (no irreversible changes), but carries high severity due to potential exposure of secrets (API keys, passwords, tokens) that could be misused by a compromised AI agent. The tool enables access to sensitive data without modification, placing it in Read category but with elevated risk assessment.

From the tool's definition Tool name 'get_credential' indicates retrieval of credential data. The sibling tools include 'create_credential' and 'delete_credential', confirming this is part of a credential management system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_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 get_credential, this is the rule to start with:

get_credential Allowed

get_credential 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": {
    "get_credential": {}
  }
}

ALLOW ONLY 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 get_credential call is checked against it from then on.

FAQ

Questions about get_credential

What does the get_credential tool do? +

get_credential is a read tool on the n8n MCP Server MCP server. It is categorised as a Read tool in the n8n MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_credential? +

Register the n8n MCP Server MCP server in PolicyLayer and add a rule for get_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 get_credential? +

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

Can I rate-limit get_credential? +

Yes. Add a rate_limit block to the get_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 get_credential completely? +

Set action: deny in the PolicyLayer policy for get_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 get_credential? +

get_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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