Fetch a website, convert the content to plain text (no HTML)
AI agents call fetch_txt to retrieve information from Mcp Fetch Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only tool that retrieves and reformats publicly accessible web content. It has no capability to modify data, execute code, delete content, or move funds. The worst case misuse would be scraping content an AI agent shouldn't access, but the tool itself is passive retrieval with minimal blast radius.
From the tool's definition Tool name 'fetch_txt' and description 'Fetch a website, convert the content to plain text' indicate retrieval of web content with no modification or side effects.
Attacks that exploit this kind of access
Fetch a website, convert the content to plain text (no HTML). It is categorised as a Read tool in the Mcp Fetch Server MCP Server, which means it retrieves data without modifying state.
Register the Mcp Fetch Server MCP server in PolicyLayer and add a rule for fetch_txt: 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 Fetch Server. Nothing to install.
fetch_txt 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_txt 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_txt. 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_txt is provided by the Mcp Fetch Server MCP server (mcp-fetch-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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