Check if the DataMerge API client is configured and can connect. Uses /auth/info.
AI agents call health_check to retrieve information from DataMerge MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
health_check is a read-only diagnostic tool that queries authentication and connectivity status. It has no side effects, does not create or modify data, does not execute external operations beyond a simple status check, and does not delete or move data. The minimal blast radius if misused (e.g., called repeatedly) would be informational exposure about system connectivity, falling under Read severity low.
From the tool's definition Tool description states it 'Check[s] if the DataMerge API client is configured and can connect' and 'Uses /auth/info'. This is a diagnostic query operation that retrieves status information without modifying, executing code, or affecting data.
Attacks that exploit this kind of access
Check if the DataMerge API client is configured and can connect. Uses /auth/info. It is categorised as a Read tool in the DataMerge MCP MCP Server, which means it retrieves data without modifying state.
Register the DataMerge 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 DataMerge MCP. 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 DataMerge MCP server (poolside-ventures/datamerge-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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