AI agents call check_health to retrieve information from OathScore without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a diagnostic/monitoring tool that queries service state and returns health metrics. It has no side effects, cannot modify data, execute code, or affect financial operations. It is purely informational, making it a Read operation with minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'check_health' and description 'Check OathScore service health and data freshness' indicate retrieval of status information with no modifications, no command execution, and no financial impact.
Attacks that exploit this kind of access
Check OathScore service health and data freshness. It is categorised as a Read tool in the OathScore MCP Server, which means it retrieves data without modifying state.
Register the OathScore MCP server in PolicyLayer and add a rule for check_health: 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 OathScore. Nothing to install.
check_health 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 check_health 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 check_health. 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.
check_health is provided by the OathScore MCP server (moxiespirit/oathscore). 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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