Fetch URL. Returns page text as markdown.
AI agents call web_url_read to retrieve information from Mcp Searxng without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and reads content from a URL, converting it to markdown format. It has no side effects, creates no data modifications, executes no code, and causes no data loss. It is a straightforward read operation typical of web scraping or content fetching utilities.
From the tool's definition Tool name 'web_url_read' and description 'Fetch URL. Returns page text as markdown.' indicate retrieval of web content with no modification or deletion of data.
Attacks that exploit this kind of access
Fetch URL. Returns page text as markdown. It is categorised as a Read tool in the Mcp Searxng MCP Server, which means it retrieves data without modifying state.
Register the Mcp Searxng MCP server in PolicyLayer and add a rule for web_url_read: 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 Mcp Searxng. Nothing to install.
web_url_read 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_url_read 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_url_read. 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_url_read is provided by the Mcp Searxng MCP server (mcp-searxng). 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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