retrieveEntityGrantWithId

Retrieves an Entity Grant for the given Entity and User/Entity.

SERVERFusionauth SOURCE@fusionauth/mcp-api

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/io-fusionauth-mcp-api/retrieveentitygrantwithid.md

WHAT IT DOES

What retrieveEntityGrantWithId does on Fusionauth

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

RISK

Why retrieveEntityGrantWithId is rated Low

This tool queries and returns entity grant information without creating, modifying, or deleting data. It has no side effects beyond data retrieval, making it a Read operation with low severity risk.

From the tool's definition Tool name includes 'Retrieves' and description states 'Retrieves an Entity Grant' with no modification or deletion language. Parameters indicate fetching existing data by ID.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

retrieveEntityGrantWithId Allowed

retrieveEntityGrantWithId 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": {
    "retrieveEntityGrantWithId": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about retrieveEntityGrantWithId

What does the retrieveEntityGrantWithId tool do? +

Retrieves an Entity Grant for the given Entity and User/Entity. It is categorised as a Read tool in the Fusionauth MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on retrieveEntityGrantWithId? +

Register the Fusionauth MCP server in PolicyLayer and add a rule for retrieveEntityGrantWithId: 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.

What risk level is retrieveEntityGrantWithId? +

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

Can I rate-limit retrieveEntityGrantWithId? +

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

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

retrieveEntityGrantWithId 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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