Check the health status of the SEQ server
AI agents call check_health to retrieve information from SEQ MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple health status check, which is a non-destructive read operation. It queries the server state and returns information with no side effects, no data modification, and no code execution. The minimal blast radius and non-invasive nature justify a low severity rating.
From the tool's definition Tool name 'check_health' and description 'Check the health status of the SEQ server' indicate a read-only query operation that retrieves server status information without modifying or executing anything.
Attacks that exploit this kind of access
Check the health status of the SEQ server. It is categorised as a Read tool in the SEQ MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SEQ MCP Server 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 SEQ MCP Server. 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 SEQ MCP Server MCP server (roeej/seq-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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