Download all visible text from a URL.
AI agents call fetch_url_text to retrieve information from Tagny MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches and extracts text content from web pages. It performs information retrieval only, with no side effects on the target system or data. The worst-case misuse would be unauthorized scraping of sensitive web content, but the tool itself cannot modify, delete, execute code, or move money.
From the tool's definition Tool description states 'Download all visible text from a URL' — a retrieval operation with no modification, deletion, or execution capability. Sibling tools (fetch_page_links, search_web_with_brave, search_web_with_duckduckgo) are all read-only queries.
Attacks that exploit this kind of access
Download all visible text from a URL. It is categorised as a Read tool in the Tagny MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tagny MCP Server MCP server in PolicyLayer and add a rule for fetch_url_text: 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 Tagny MCP Server. Nothing to install.
fetch_url_text 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 fetch_url_text 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 fetch_url_text. 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.
fetch_url_text is provided by the Tagny MCP Server MCP server (tagny/tagny-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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