extract_structured_data

Extract structured data from HTML

SERVERPercepta MCP Server SOURCE0x-hewm/percepta-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0x-hewm-percepta-mcp/extract-structured-data.md

WHAT IT DOES

What extract_structured_data does on Percepta MCP Server

AI agents call extract_structured_data to retrieve information from Percepta MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why extract_structured_data is rated Low

This tool performs data retrieval and parsing operations with no side effects on the target system. It falls squarely into the Read category as it queries and extracts information without creating, modifying, or destroying data.

From the tool's definition The tool name 'extract_structured_data' and description 'Extract structured data from HTML' indicate it retrieves and parses data from web content without modifying it.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs extract_structured_data safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Percepta MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For extract_structured_data, this is the rule to start with:

extract_structured_data Allowed

extract_structured_data is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "extract_structured_data": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Percepta MCP Server, apply this rule, and every extract_structured_data call is checked against it from then on.

FAQ

Questions about extract_structured_data

What does the extract_structured_data tool do? +

Extract structured data from HTML. It is categorised as a Read tool in the Percepta MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on extract_structured_data? +

Register the Percepta MCP Server MCP server in PolicyLayer and add a rule for extract_structured_data: 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 Percepta MCP Server. Nothing to install.

What risk level is extract_structured_data? +

extract_structured_data is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit extract_structured_data? +

Yes. Add a rate_limit block to the extract_structured_data 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.

How do I block extract_structured_data completely? +

Set action: deny in the PolicyLayer policy for extract_structured_data. 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.

What MCP server provides extract_structured_data? +

extract_structured_data is provided by the Percepta MCP Server MCP server (0x-hewm/percepta-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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