Claude Code CLI v2.1.91: A Deep Dive into Conversation Ops and Terminal Controls

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Claude Code is an agentic coding tool developed by Anthropic that autonomously plans and executes complex code changes by parsing user prompts and interacting with a computer's file system. Version 2.1.91, released on April 2, 2026, serves as the technical basis for this detailed exploration of the tool's command-line interface. The CLI offers more than 40 built-in slash-commands, organized into categories covering session configuration, session reflection, session management, context management, conversation operations, and terminal configuration. Key commands include options to rename sessions, toggle plan mode, review code for security issues, manage context windows, and control background tasks. The article focuses particularly on conversation ops and fine-grained permission settings that govern how Claude Code accesses project files.

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