1.0.52-0

Added

• Custom agents support opt-in deferred tool loading via deferred-tool-loading in agent frontmatter, enabling tool-search discovery for agents with large tool lists

Improved

• /compact accepts optional focus instructions to shape the compaction summary
• General-purpose subagents use GPT-5.4 or GPT-5.5 when available
• /usage shows quota progress bars for session and weekly limits
• AI credits error messages updated with clearer language and a Manage budget link

Fixed

• Exit summary displays AI Credits label with correct spacing before the value
• /restart and /update preserve the current session ID after restarting
• Legacy nested oauth.clientId and oauth.callbackPort keys in MCP server configs are now migrated to the supported oauthClientId and auth.redirectPort keys instead of being silently dropped
• MCP OAuth re-authentication honors the configured redirectPort
• PowerShell division operator no longer triggers false 'Allow directory access' prompts on Windows

1.0.51

2026-05-20

• --session-id=<id> resumes known sessions or tasks, and starts new sessions with a specific UUID
• /remote commands now respect organization remote control and view from cloud policy and show a clear error when disabled
• /remote command can now be used while the agent is working
• Customizable status line in the terminal footer displays session info such as model, context window, git branch, and more
• MCP tool loading at startup is faster for users with many HTTP-based MCP servers
• Settings file no longer accumulates unrelated config keys when settings are updated
• Add /security-review slash command to review code changes for security vulnerabilities (experimental)
• Add preMcpToolCall hook for hook providers to control outgoing MCP request metadata
• Add /chronicle cost-tips subcommand for personalized token usage and cost reduction recommendations
• MCP servers using OAuth stay connected when authentication was performed in a separate session
• GFM tables and blockquotes inside list items render correctly without a floating top border
• Experimental mode indicator now appears persistently in the app header instead of as a one-time notification
• Loading indicator color matches the active mode (plan, autopilot, shell)
• Session naming works correctly for usage-based billing users
• Pressing Enter on a highlighted subcommand completion inserts the selection instead of submitting the partial command
• Use default release notes when publishing a release with no changelog entries
• Editor launched with Ctrl+G no longer steals keystrokes or requires double keypresses
• /memory show displays documentation links for learning about and managing Copilot Memory
• Add terminalProgress setting to enable or disable OSC 9;4 terminal progress indicators
• postToolUse hooks can now inject additionalContext into successful tool results
• Only show remote session startup failure when remote mode is explicitly requested via --remote or enabled in user configuration
• Shell tool calls succeed even when the model omits the description parameter
• Ensure input token usage includes cached, update token formatting to clarify
• Login prompt more clearly warns when token storage falls back to insecure plain text config file
• GitHub MCP web search tool is available immediately without requiring tool search
• Secret scanning now covers commit messages and PR descriptions, redacting secrets before they are published
• Input area grows responsively with terminal height instead of capping at 3 lines

1.0.51-3

Added

• Add /security-review slash command to review code changes for security vulnerabilities
• Add preMcpToolCall hook for hook providers to control outgoing MCP request metadata
• Add /chronicle cost-tips subcommand for personalized token usage and cost reduction recommendations

Improved

• Experimental mode indicator now appears persistently in the app header instead of as a one-time notification
• Loading indicator color matches the active mode (plan, autopilot, shell)

Fixed

• MCP servers using OAuth stay connected when authentication was performed in a separate session
• GFM tables and blockquotes inside list items render correctly without a floating top border

1.0.51-2

Improved

• /memory show displays documentation links for learning about and managing Copilot Memory

Fixed

• Session naming works correctly for usage-based billing users
• Pressing Enter on a highlighted subcommand completion inserts the selection instead of submitting the partial command
• Use default release notes when publishing a release with no changelog entries
• Editor launched with Ctrl+G no longer steals keystrokes or requires double keypresses

1.0.51-1

Pre-release 1.0.51-1

1.0.49

2026-05-18

• postToolUse hook additionalContext is now injected as a system message for the model instead of being silently discarded
• Mouse clicks in the prompt correctly position cursor when input contains wide characters (CJK, emoji)
• Add /chronicle search subcommand to search all session content by keyword or topic
• /user switch reuses the fetched user list and shows a loading spinner on first open
• MCP servers using static OAuth clients correctly persist registration for token refreshes
• Add support for running the CLI on Alpine Linux (musl libc)
• Add /exit print option to print the session to the terminal before exiting
• Add /rubber-duck command to get an independent critique of the agent's current work
• Add /session id subcommand to display the current session ID and copy it to the clipboard
• Add auth.redirectPort config option for MCP servers to pin the OAuth callback to a fixed port
• Add /memory on|off|show slash command to enable, disable, or view memory status (persistent)
• Add copilot plugin update --all to update all installed plugins at once
• Add /rubber-duck command to invoke the rubber duck agent for an independent critique (experimental)
• Input prompt collapses to a single line when empty and grows naturally as you type
• File diffs are correctly reported to ACP clients for all edit tool types
• Repo hooks in .github/hooks/ now load in prompt mode (-p) when the folder is already trusted
• Fix extra line in timeline entries
• Box drawing and block characters render correctly on Windows terminals not using UTF-8 code page
• MCP server configurations with no args field are now accepted and treated as an empty args list
• Document attachment paths are included in context so the agent can reference pasted file paths, including Windows Copy as path inputs
• MCP stdio servers now display type as 'stdio' instead of 'local' for consistency
• Progress bar indicator now displays correctly in tmux sessions
• Experimental slash commands are now annotated with "(experimental)" in the help dialog and command picker
• Auto-update downloads the smaller platform-specific package instead of the universal one when available
• Auto-link GitHub issue and PR references (owner/repo#number) in assistant responses
• Prompt mode (-p) automatically loads workspace MCP sources when the current folder is already trusted
• Experimental: /mcp search command to search and install MCP servers from registry
• Experimental: Tool search with deferred loading for MCP and external tools
• Add "None" reasoning effort option to disable model reasoning in the reasoning effort picker
• Add COPILOT_PLUGIN_DIR_ONLY environment variable to disable automatic plugin discovery, enabling deterministic plugin sets when using --plugin-dir
• Copying text from the scroll view joins soft-wrapped lines without extra newlines or indentation
• Cursor positioning in input fields works correctly with wide characters (CJK, emoji)
• Hooks (preToolUse, postToolUse, subagentStart, subagentStop) now fire correctly for sub-agent tool calls
• Plugins loaded via --plugin-dir now correctly register their agents as available task(agent_type=...) subagents in prompt mode
• Memory storage correctly limits available scopes when no repository context is present
• --plugin-dir and --additional-mcp-config now work in --server / --headless mode
• Content-filtered model responses now display an explanation instead of a blank assistant turn
• PromptFrame UI now renders inside tmux when the outer terminal is ghostty, WezTerm, or kitty (detected via tmux list-clients).
• MCP OAuth token lookups are correctly scoped to the active session
• Memory permission prompts now name who can see a stored memory: user scope or the specific owner/repo for repository scope. Timeline entries also show the scope ((for user) / (shared with repository collaborators)).
• Reduce PowerShell syntax errors on Windows by avoiding && chaining instructions when using legacy PowerShell 5.x

1.0.49-6

Pre-release 1.0.49-6

1.0.49-1

Improved

• Prompt mode (-p) automatically loads workspace MCP sources when the current folder is already trusted

1.0.49-0

Added

• Experimental: /mcp search command to search and install MCP servers from registry
• Experimental: Tool search with deferred loading for MCP and external tools
• Add "None" reasoning effort option to disable model reasoning in the reasoning effort picker
• Add COPILOT_PLUGIN_DIR_ONLY environment variable to disable automatic plugin discovery, enabling deterministic plugin sets when using --plugin-dir

Improved

• Memory permission prompts now name who can see a stored memory: user scope or the specific owner/repo for repository scope. Timeline entries also show the scope ((for user) / (shared with repository collaborators)).
• Reduce PowerShell syntax errors on Windows by avoiding && chaining instructions when using legacy PowerShell 5.x

Fixed

• Copying text from the scroll view joins soft-wrapped lines without extra newlines or indentation
• Cursor positioning in input fields works correctly with wide characters (CJK, emoji)
• Hooks (preToolUse, postToolUse, subagentStart, subagentStop) now fire correctly for sub-agent tool calls
• Plugins loaded via --plugin-dir now correctly register their agents as available task(agent_type=...) subagents in prompt mode
• Memory storage correctly limits available scopes when no repository context is present
• --plugin-dir and --additional-mcp-config now work in --server / --headless mode
• Content-filtered model responses now display an explanation instead of a blank assistant turn
• PromptFrame UI now renders inside tmux when the outer terminal is ghostty, WezTerm, or kitty (detected via tmux list-clients).
• MCP OAuth token lookups are correctly scoped to the active session

1.0.48

2026-05-14

• Model picker displays actual token prices instead of dot indicators for token-based billing users
• Instruction files with unquoted glob patterns in applyTo frontmatter (e.g. applyTo: */.ts) are now applied correctly
• Input text with CJK characters or emoji renders without blank gaps between lines
• /context shows correct token limits for all models instead of always showing 128k
• Auto-disable the built-in github-mcp-server in Azure DevOps-only workspaces when running in prompt/headless mode, matching interactive mode behavior
• Terminal cursor positions correctly on the input field instead of on decorative elements like the selected tab
• ACP clients receive updated config options when the active model is changed
• /ask dialog no longer prompts for follow-up replies it cannot receive
• Skill content injected to the model no longer includes YAML frontmatter metadata