Extract HTTP and HTTPS URLs from text.
AI agents call extract_urls to retrieve information from MCP Server Fly without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs text analysis to identify and return URLs—a read-only operation. It has no capacity to modify data, execute commands, delete content, or trigger financial transactions. The blast radius of misuse is minimal (an AI could extract URLs from sensitive documents, potentially exposing information, but cannot act on them directly).
From the tool's definition Tool name is 'extract_urls' and description states it 'Extract HTTP and HTTPS URLs from text.' This is a parsing/extraction operation that queries and retrieves URL data from provided text with no modification, creation, deletion, or external side effects.
Attacks that exploit this kind of access
Extract HTTP and HTTPS URLs from text. It is categorised as a Read tool in the MCP Server Fly MCP Server, which means it retrieves data without modifying state.
Register the MCP Server Fly MCP server in PolicyLayer and add a rule for extract_urls: 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 Server Fly. Nothing to install.
extract_urls 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 extract_urls 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 extract_urls. 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.
extract_urls is provided by the MCP Server Fly MCP server (kushalkachari993-dev/mcp-server-fly). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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