Delete a stored credential by name, scope, and project.
AI agents call delete_credential to permanently remove resources in CHARLIE — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Credentials are sensitive authentication artifacts. Deletion of credentials cannot be reversed and could disable access to systems, break integrations, or cause service disruptions. While not directly moving money (Financial) or executing arbitrary code (Execute), the permanent removal of stored credentials makes this Destructive in nature.
From the tool's definition The tool 'delete_credential' performs an irreversible deletion of stored credentials by name, scope, and project.
Attacks that exploit this kind of access
Delete a stored credential by name, scope, and project. It is categorised as a Destructive tool in the CHARLIE MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the CHARLIE 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 CHARLIE. Nothing to install.
delete_credential 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 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.
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.
delete_credential is provided by the CHARLIE MCP server (t3cch/charlie). 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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