Agentguard

A policy checker for URLs that agents want to fetch, surfaced as three MCP tools: check_url for single decisions, check_urls_batch for bulk analysis, and validate_policy to catch common mistakes like overly broad wildcards or malformed host patterns. The server wraps the @mukundakatta/agentguard library so Claude Desktop, Cursor, or any MCP client can ask "would my firewall allow this?" before letting a tool make a real request. Note that this only returns allow/deny verdicts; it doesn't intercept or block actual network calls. Useful when you're writing egress policies and want the LLM to help audit which URLs would pass, or when prototyping multi-tool workflows where network boundaries matter.