AI agents call web_extract_contacts 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.
This is fundamentally a Read operation: it queries web pages and parses publicly visible contact information without creating, modifying, or deleting data. However, severity is medium rather than low because (1) contact scraping can enable harassment, phishing, or spam campaigns if misused by an AI agent, and (2) it may violate terms of service or privacy regulations (GDPR, CCPA) depending on the data collected and…
From the tool's definition Tool "extracts" emails, phone numbers, and social media links from web pages—retrieves data with no side effects or modifications to the target systems.
Attacks that exploit this kind of access
Extract emails, phone numbers, and social media links from any web page. Costs $0.03 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_contacts: 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_contacts 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_contacts 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_contacts. 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_contacts 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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