retrieveSystemHealthWithId
Retrieves the FusionAuth system health. This API will return 200 if the system is healthy, and 500 if the system is un-healthy.
This record as markdown: /tools/io-fusionauth-mcp-api/retrievesystemhealthwithid.md
What retrieveSystemHealthWithId does on Fusionauth
AI agents call retrieveSystemHealthWithId 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 retrieveSystemHealthWithId is rated Low
This tool performs a health check query that returns system status information without modifying, deleting, or executing any operations. It has minimal blast radius as it only provides diagnostic information. Categorized as Read with low severity due to its informational nature and lack of capability to affect system state.
From the tool's definition Tool description states it 'Retrieves the FusionAuth system health' and returns status codes (200 or 500) based on system state. The verb 'Retrieves' and the read-only nature of health checks confirm this is a query operation with no side effects.
Attacks that exploit this kind of access
The rule that runs retrieveSystemHealthWithId 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 retrieveSystemHealthWithId, this is the rule to start with:
retrieveSystemHealthWithId 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 retrieveSystemHealthWithId call is checked against it from then on.
Questions about retrieveSystemHealthWithId
Retrieves the FusionAuth system health. This API will return 200 if the system is healthy, and 500 if the system is un-healthy. 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 retrieveSystemHealthWithId: 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.
retrieveSystemHealthWithId 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 retrieveSystemHealthWithId 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 retrieveSystemHealthWithId. 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.
retrieveSystemHealthWithId 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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