Delete a credential
AI agents call credential_delete to permanently remove resources in N8n Fabric — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Credentials are security-critical assets whose deletion is irreversible and can have cascading effects on workflow execution and system access. While not financial in direct impact, the destruction of credentials represents a high-severity risk because an AI agent could delete credentials needed for business operations, break authentication chains, or disrupt automated processes.
From the tool's definition Tool name is 'credential_delete' with description 'Delete a credential'. The verb 'delete' is explicitly destructive—credentials cannot be recovered once removed, and their deletion may break dependent workflows or access controls.
Attacks that exploit this kind of access
Delete a credential. It is categorised as a Destructive tool in the N8n Fabric MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the N8n Fabric MCP server in PolicyLayer and add a rule for credential_delete: 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 Fabric. Nothing to install.
credential_delete is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the credential_delete 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.
Set action: deny in the PolicyLayer policy for credential_delete. 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.
credential_delete is provided by the N8n Fabric MCP server (ry-ops/n8n-fabric). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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