Extract structured data (JSON) from multiple web page URLs using AI via ReviewWeb.site API.
AI agents call extract_data_multiple to retrieve information from ReviewWebsite MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and retrieves structured data from multiple URLs without modifying, creating, or deleting any information. It has no capability to alter the target websites or commit any action with consequences. The extraction of public web content via API is a classic Read operation with minimal blast radius—the worst realistic misuse would be excessive API calls or privacy violations on already-public data.
From the tool's definition Tool performs 'Extract structured data' from web pages, which is a retrieval operation with no side effects. The description explicitly states it 'extracts' data rather than modifying or deleting it.
Documented attack patterns abuse exactly the kind of access extract_data_multiple gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and ReviewWebsite MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for extract_data_multiple:
{
"version": "1",
"default": "deny",
"tools": {
"extract_data_multiple": {}
}
}extract_data_multiple is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Extract structured data (JSON) from multiple web page URLs using AI via ReviewWeb.site API. It is categorised as a Read tool in the ReviewWebsite MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ReviewWebsite MCP Server MCP server in PolicyLayer and add a rule for extract_data_multiple: 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 ReviewWebsite MCP Server. Nothing to install.
extract_data_multiple 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 extract_data_multiple 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 extract_data_multiple. 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.
extract_data_multiple is provided by the ReviewWebsite MCP Server MCP server (mrgoonie/reviewwebsite-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from ReviewWebsite MCP Server, 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.
16 ReviewWebsite MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.