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Before/after simulator screenshots on the same step as a UI edit, side by side in a pane, with a changed-pixel percentage and pinned baselines

Wraps web, MCP and third-party tool output as untrusted data and defangs prompt-injection lines before the model reads them

Attaches fresh React Native redboxes and native crash logs from running simulators and emulators to your prompt, and warns when an edit needs a native rebuild

Type-checks and lints the file Claude just edited and puts the errors in that same tool result

Two-way secret scrubbing: redacts credentials before the model sees them and blocks writing them into tracked files or shell commands

Attaches a file's unresolved GitHub PR review threads to the model's Read and Edit results, so review comments get fixed in the file it is already touching