extract_structured
AI agents call extract_structured to retrieve information from Free Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description lowering confidence, the tool name and its position among read-oriented siblings (fetch, research, compare) indicate it processes already-retrieved data without side effects. No evidence of destructive, financial, or code-execution capabilities. Classified as Read due to apparent data extraction and parsing operations.
From the tool's definition Tool is named 'extract_structured' on a search/fetch MCP server. Based on sibling tools (fetch, fetch_batch, research, compare), this appears to extract and parse data from already-retrieved content.
Attacks that exploit this kind of access
extract_structured. It is categorised as a Read tool in the Free Search MCP Server, which means it retrieves data without modifying state.
Register the Free Search MCP server in PolicyLayer and add a rule for extract_structured: 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 Free Search. Nothing to install.
extract_structured 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_structured 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_structured. 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_structured is provided by the Free Search MCP server (sweetcornna/free-search-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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