Show HN: CtxWise – MCP schema tree-shaker and firewall for Claude and Codex (github.com)

CtxWise has launched a new tool designed to enhance token efficiency and security for users of AI coding agents like Claude Code, OpenAI Codex, and Cursor. The CtxWise MCP Schema Tree-Shaker and Context Firewall work to address common issues such as bloated context schemas that waste startup tokens, the risk of prompt injection, and hidden API key leaks. With a zero-configuration approach, CtxWise allows users to easily profile and audit their MCP servers and context files using simple commands, resulting in substantial reductions in token usage and improved alignment across multiple agent frameworks. This tool is significant for the AI/ML community as it offers a proactive solution to optimize performance and security in AI development. By reducing unnecessary token consumption—measured at up to 73.3% for model-visible prompts—CtxWise can save developers both time and money. Features such as automatic detection of leaks and potential prompt injection risks strengthen the reliability of AI models in real-world applications. Additionally, its integration with CI/CD workflows enhances project security and efficiency, marking a meaningful advancement in the management of context and resources in AI environments.