retrieveApplicationWithId

Retrieves the application for the given Id or all the applications if the Id is null.

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/retrieveapplicationwithid.md

WHAT IT DOES

What retrieveApplicationWithId does on Fusionauth

AI agents call retrieveApplicationWithId 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 retrieveApplicationWithId is rated Low

This tool performs data retrieval without modifying, executing, deleting, or creating any resources. The blast radius of misuse is minimal (information disclosure only), making it a low-severity Read operation.

From the tool's definition Tool name 'retrieveApplicationWithId' and description 'Retrieves the application' indicate a retrieval operation with no side effects. The operation either fetches a single application by ID or lists all applications when ID is null—both are read-only queries.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

retrieveApplicationWithId Allowed

retrieveApplicationWithId 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": {
    "retrieveApplicationWithId": {}
  }
}

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 retrieveApplicationWithId call is checked against it from then on.

FAQ

Questions about retrieveApplicationWithId

What does the retrieveApplicationWithId tool do? +

Retrieves the application for the given Id or all the applications if the Id is null. 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 retrieveApplicationWithId? +

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

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

Can I rate-limit retrieveApplicationWithId? +

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

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

retrieveApplicationWithId 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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