FINE-GRAINED HTTP FILTERING FOR CLAUDE CODE

Summary from the TLDR Web Dev newsletter

httpjail is a tool designed to mitigate security risks associated with increasingly powerful coding agents by implementing fine-grained HTTP(S) filtering. It works by intercepting HTTP requests and applying user-defined JavaScript or shell script rules to control agent access to external resources, focusing on preventing destructive actions, data leaks, and excessive authority. It has both a "weak" mode that relies on environment variables and a "strong" mode that uses network namespaces, including TLS interception for HTTPS traffic inspection.