Search browser history for specific queries. Use this after getting history data.
AI agents call search_browser_history 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 tool retrieves historical data from the browser without any capability to delete, modify, or execute actions. It is a passive read operation that queries existing browser history records. The low severity reflects minimal blast radius—even if misused by an agent, it can only retrieve data the user's browser has already recorded, with no side effects or ability to modify state.
From the tool's definition Tool name 'search_browser_history' and description 'Search browser history for specific queries' indicate a query/search operation with no modification capabilities. The server description emphasizes 'retrieving and analyzing' data.
Documented attack patterns abuse exactly the kind of access search_browser_history 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 search_browser_history:
{
"version": "1",
"default": "deny",
"tools": {
"search_browser_history": {}
}
}search_browser_history is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search browser history for specific queries. Use this after getting history data. 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 search_browser_history: 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.
search_browser_history 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 search_browser_history 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 search_browser_history. 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.
search_browser_history 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.
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7 Browser History Analysis MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.