
See what your coding agent sends. Mask what you can.
An open-source hook and local proxy for Claude Code, Codex, Copilot CLI and VS Code. In Claude Code it masks secrets and personal data in tool results before the model reads them, and shim watch shows what a session sent and cost. No account, no telemetry.
Shim-cli is an open-source tool that acts as a hook and local proxy for coding agents like Claude Code and Copilot CLI, masking sensitive information in tool outputs. It provides visibility into session data and associated costs without requiring an account or telemetry.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.