retrieveEntityWithId

Retrieves the Entity for the given Id.

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/retrieveentitywithid.md

WHAT IT DOES

What retrieveEntityWithId does on Fusionauth

AI agents call retrieveEntityWithId 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 retrieveEntityWithId is rated Low

The verb 'Retrieves' clearly indicates a read-only query operation that fetches an entity by identifier. This has no side effects and causes no data changes, placing it in the Read category with low severity.

From the tool's definition Tool name 'retrieveEntityWithId' and description 'Retrieves the Entity for the given Id' indicate data retrieval with no modification, creation, or deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

retrieveEntityWithId Allowed

retrieveEntityWithId 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": {
    "retrieveEntityWithId": {}
  }
}

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 retrieveEntityWithId call is checked against it from then on.

FAQ

Questions about retrieveEntityWithId

What does the retrieveEntityWithId tool do? +

Retrieves the Entity for the given Id. 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 retrieveEntityWithId? +

Register the Fusionauth MCP server in PolicyLayer and add a rule for retrieveEntityWithId: 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 retrieveEntityWithId? +

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

Can I rate-limit retrieveEntityWithId? +

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

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

retrieveEntityWithId 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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