Performs a health check on the server, verifying uptime, documentation accessibility, and basic functionality
AI agents call health_check to retrieve information from Material Web without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The health_check tool is a diagnostic utility that queries the server's status and availability without creating, modifying, or deleting any data. It retrieves information about the server's operational state, which is characteristic of Read category tools.
From the tool's definition Tool performs a 'health check' that 'verifying uptime, documentation accessibility, and basic functionality' — all read-only diagnostic operations with no side effects, data modification, or destructive capabilities.
Attacks that exploit this kind of access
Performs a health check on the server, verifying uptime, documentation accessibility, and basic functionality. It is categorised as a Read tool in the Material Web MCP Server, which means it retrieves data without modifying state.
Register the Material Web MCP server in PolicyLayer and add a rule for health_check: 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 Material Web. Nothing to install.
health_check 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 health_check 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 health_check. 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.
health_check is provided by the Material Web MCP server (shantoislamdev/material-web-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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