retrieveRegistrationReportWithId
Retrieves the registration report between the two instants. If you specify an application Id, it will only return the registration counts for that application.
This record as markdown: /tools/io-fusionauth-mcp-api/retrieveregistrationreportwithid.md
What retrieveRegistrationReportWithId does on Fusionauth
AI agents call retrieveRegistrationReportWithId 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.
Why retrieveRegistrationReportWithId is rated Low
This tool queries and retrieves historical registration data (a report) without modifying, executing, or destroying anything. It is purely informational and has no side effects on the system state. The optional application Id filter is a query parameter, not a destructive operation. This is a straightforward Read category tool with minimal risk if misused by an agent.
From the tool's definition Tool name contains 'retrieve' and description states 'Retrieves the registration report' with no mention of modification, deletion, or execution capabilities. Returns registration counts/data only.
Attacks that exploit this kind of access
The rule that runs retrieveRegistrationReportWithId 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 retrieveRegistrationReportWithId, this is the rule to start with:
retrieveRegistrationReportWithId is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every retrieveRegistrationReportWithId call is checked against it from then on.
Questions about retrieveRegistrationReportWithId
Retrieves the registration report between the two instants. If you specify an application Id, it will only return the registration counts for that application. It is categorised as a Read tool in the Fusionauth MCP Server, which means it retrieves data without modifying state.
Register the Fusionauth MCP server in PolicyLayer and add a rule for retrieveRegistrationReportWithId: 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.
retrieveRegistrationReportWithId is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the retrieveRegistrationReportWithId 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 retrieveRegistrationReportWithId. 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.
retrieveRegistrationReportWithId 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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