deleteEntityGrantWithId
Deletes an Entity Grant for the given User or Entity.
This record as markdown: /tools/io-fusionauth-mcp-api/deleteentitygrantwithid.md
What deleteEntityGrantWithId does on Fusionauth
AI agents call deleteEntityGrantWithId to permanently remove resources in Fusionauth, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why deleteEntityGrantWithId is rated Critical
This tool performs an irreversible deletion operation on Entity Grants, which are access control or permission objects. Deletion of grants cannot be undone and would immediately revoke access rights. This is a classic destructive operation with significant blast radius if triggered inappropriately by an AI agent, justifying 'high' severity.
From the tool's definition Tool name contains 'delete' and description states 'Deletes an Entity Grant' — irreversible removal of access/permission data.
Attacks that exploit this kind of access
The rule that runs deleteEntityGrantWithId safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Fusionauth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For deleteEntityGrantWithId, this is the rule to start with:
deleteEntityGrantWithId is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every deleteEntityGrantWithId call is checked against it from then on.
Questions about deleteEntityGrantWithId
Deletes an Entity Grant for the given User or Entity. It is categorised as a Destructive tool in the Fusionauth MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Fusionauth MCP server in PolicyLayer and add a rule for deleteEntityGrantWithId: 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 Fusionauth. Nothing to install.
deleteEntityGrantWithId 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 deleteEntityGrantWithId 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 deleteEntityGrantWithId. 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.
deleteEntityGrantWithId is provided by the Fusionauth MCP server (@fusionauth/mcp-api). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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