Simple health check that returns immediately to test if the MCP server is working.
AI agents call health_check to retrieve information from Browser History Analysis MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple health check that performs a non-destructive query of server status. It has no side effects, does not access user data, and cannot modify any state. The Read category is appropriate as it retrieves minimal diagnostic information about server availability.
From the tool's definition Tool description states it 'returns immediately to test if the MCP server is working' — a diagnostic operation that queries server state without retrieving or modifying any browser history data.
Documented attack patterns abuse exactly the kind of access health_check gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Browser History Analysis MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for health_check:
{
"version": "1",
"default": "deny",
"tools": {
"health_check": {}
}
}health_check is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Simple health check that returns immediately to test if the MCP server is working. It is categorised as a Read tool in the Browser History Analysis MCP MCP Server, which means it retrieves data without modifying state.
Register the Browser History Analysis 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 Browser History Analysis 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 Browser History Analysis MCP server (mixophrygian/browser_history_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Browser History Analysis MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
7 Browser History Analysis MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.