AI agents call web_extract_batch to retrieve information from Data Apis without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and extracts text content from web pages. While it makes HTTP requests to external URLs, it does not execute arbitrary code on those systems, does not modify data, and does not perform destructive operations.
From the tool's definition Tool description states 'Extract text from up to 5 URLs in a single request' — this is data retrieval with no modification, deletion, or code execution capability. The verb 'extract' combined with 'text from URLs' indicates read-only web scraping.
Attacks that exploit this kind of access
Extract text from up to 5 URLs in a single request. Costs $0.08 USDC per request via x402 on Base. It is categorised as a Read tool in the Data Apis MCP Server, which means it retrieves data without modifying state.
Register the Data Apis MCP server in PolicyLayer and add a rule for web_extract_batch: 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 Data Apis. Nothing to install.
web_extract_batch 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 web_extract_batch 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 web_extract_batch. 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.
web_extract_batch is provided by the Data Apis MCP server (yantrix-ai/x402-apis-mcp-server). 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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