super-fetch-mcp-server

The server demonstrates strong security practices, including extensive URL validation, SSRF protection with comprehensive IP and hostname blocklists (private IP ranges, cloud metadata endpoints, internal domain suffixes), and robust HTTP host/origin validation. It implements rate limiting and requires authentication (API key or OAuth) for HTTP mode, using timing-safe comparisons for static tokens. Content transformation is handled in worker threads, mitigating some types of exploitation. No 'eval' or obvious malicious patterns were found in the provided code. However, as noted in the README, caution is advised when deploying in sensitive environments, as it can access external URLs on behalf of AI assistants.