Copilot CLI v1.0.49: Memory, MCP OAuth, Alpine Support

TL;DR

• Persistent memory system with scope controls (user vs. repo-level)
• MCP OAuth token handling fixed; Alpine Linux support added
• New /rubber-duck command for independent agent critique; /chronicle for session search
• Wide character input fixes (CJK, emoji); Windows terminal rendering improvements

New

• /memory on|off|show — Enable, disable, or view persistent memory status with user or repository scope
• /rubber-duck — Get an independent critique of the agent's current work (experimental)
• /chronicle search — Search all session content by keyword or topic
• /session id — Display current session ID and copy to clipboard
• /exit print — Print session to terminal before exiting
• /mcp search — Search and install MCP servers from registry (experimental)
• copilot plugin update --all — Update all installed plugins at once
• Alpine Linux support — CLI now runs on musl libc systems
• auth.redirectPort config — Pin OAuth callback to fixed port for MCP servers
• COPILOT_PLUGIN_DIR_ONLY env var — Disable automatic plugin discovery for deterministic plugin sets
• Tool search with deferred loading — Faster tool discovery for MCP and external tools (experimental)
• "None" reasoning effort option — Disable model reasoning in the reasoning effort picker
• Auto-link GitHub references — Issue and PR references (owner/repo#number) now auto-link in responses

Fixed

• postToolUse hook additionalContext now injected as system message instead of discarded
• Mouse cursor positioning in prompts with wide characters (CJK, emoji) now correct
• MCP OAuth token persistence and refresh for static OAuth clients
• File diffs correctly reported to ACP clients for all edit tool types
• Box drawing and block characters render correctly on Windows non-UTF-8 terminals
• MCP stdio servers display type as 'stdio' instead of 'local'
• Progress bar indicator displays correctly in tmux sessions
• Input prompt collapses to single line when empty; grows naturally as you type
• Copying text from scroll view joins soft-wrapped lines without extra newlines
• Hooks (preToolUse, postToolUse, subagentStart, subagentStop) fire correctly for sub-agent tool calls
• Plugins loaded via --plugin-dir correctly register agents as available task subagents
• Memory storage correctly limits scopes when no repository context present
• Content-filtered model responses display explanation instead of blank turn
• MCP OAuth token lookups correctly scoped to active session
• PromptFrame UI renders inside tmux with ghostty, WezTerm, or kitty detection
• PowerShell syntax errors reduced on Windows by avoiding && chaining with legacy PowerShell 5.x
• Repo hooks in .github/hooks/ load in prompt mode (-p) when folder already trusted
• MCP server configs with no args field now accepted as empty args list
• Document attachment paths included in context for agent reference
• Auto-update downloads smaller platform-specific package when available
• Experimental slash commands annotated with "(experimental)" in help and command picker
• Memory permission prompts name scope (user or owner/repo); timeline entries show scope
• /user switch reuses fetched user list and shows loading spinner on first open

Update: copilot update or download from GitHub releases

Source: Copilot CLI