1.0.57

2026-06-01

• Actionable error message shown when GitHub API rate limit is hit during copilot update
• Plugin slash commands (/plugin install, uninstall, update, marketplace add/remove/browse) now show immediate feedback while the operation is in progress
• Canceling a running shell command (Ctrl+C on a !command, or aborting an agent command — including in sandboxed and background-promoted shells) now terminates the whole process tree instead of leaving orphaned processes running
• Canvas providers can return file:// URLs in open results for local file previews
• Symlinked directories appear in /cwd completion suggestions
• In Azure DevOps-only repositories, the built-in GitHub MCP server now exposes only the web_search tool instead of being fully disabled
• Quota footer shows remaining requests as a rounded percentage
• /lsp show, /lsp test, and /lsp reload correctly discover project LSP config when the CLI is launched from a subdirectory
• MCP server timeout configuration is preserved after tools list changes
• /skills add and /skills remove correctly handle paths wrapped in quotes (e.g., from Windows Explorer "Copy as path")
• Running copilot with an unquoted multi-word prompt now shows a helpful "quote your prompt" hint instead of a raw commander error
• Default networking transport is now HTTP/1.1, improving reliability on some network paths. Opt into HTTP/2 with COPILOT_ENABLE_HTTP2=1.
• Plugins auto-installed from repository settings no longer leak into user global config
• Grep tool correctly handles tsx and jsx as file type filters
• COPILOT_HOME is honored for the server discovery registry directory
• Click a diff line with the mouse to select it in diff mode
• Ctrl+C and other modified keys work correctly inside tmux
• @-mention file search matches files regardless of query letter casing
• copilot plugin marketplace list now honors repo-level extraKnownMarketplaces settings from .github/copilot/settings.json
• Queued prompts in the footer are capped to a single line, preventing them from pushing session messages off screen
• MCP servers configured with npx --registry are no longer incorrectly blocked by policy
• Session no longer hangs indefinitely after an error occurs during internal event processing
• Installed plugins no longer include the .git directory from the plugin source repository
• New reasoning after tool calls appears at the bottom of the timeline instead of above earlier output
• Pasting text copied from a browser, editor, or terminal no longer leaves a stray empty line, broken box-drawing lines, or a misplaced cursor in the prompt
• preToolUse hook errors now deny the tool call instead of silently allowing execution
• Session resume works correctly after a crash that left partial data in the session log
• High-contrast diff backgrounds use darker colors to improve text readability
• Add showTipsOnStartup setting to control whether startup tips are shown
• Surface the underlying reason (e.g. GitHub API rate limit) when SDK auth-token validation fails, instead of the misleading "Session was not created with authentication info or custom provider" message.
• /diff defaults to branch diff when there are no unstaged changes

1.0.57-5

Fixes and changes

1.0.57-4

Added

• Click a diff line with the mouse to select it in diff mode

Improved

• preToolUse hook errors now deny the tool call instead of silently allowing execution

Fixed

• Ctrl+C and other modified keys work correctly inside tmux
• @-mention file search matches files regardless of query letter casing
• copilot plugin marketplace list now honors repo-level extraKnownMarketplaces settings from .github/copilot/settings.json
• Queued prompts in the footer are capped to a single line, preventing them from pushing session messages off screen
• MCP servers configured with npx --registry are no longer incorrectly blocked by policy
• Session no longer hangs indefinitely after an error occurs during internal event processing
• Installed plugins no longer include the .git directory from the plugin source repository
• New reasoning after tool calls appears at the bottom of the timeline instead of above earlier output
• Pasting text copied from a browser, editor, or terminal no longer leaves a stray empty line, broken box-drawing lines, or a misplaced cursor in the prompt

1.0.57-3

Improved

• High-contrast diff backgrounds use darker colors to improve text readability

Fixed

• Session resume works correctly after a crash that left partial data in the session log

1.0.57-2

Fixes and changes

1.0.57-1

Added

• Add showTipsOnStartup setting to control whether startup tips are shown

1.0.57-0

Improved

• /diff defaults to branch diff when there are no unstaged changes

Fixed

• Surface the underlying reason (e.g. GitHub API rate limit) when SDK auth-token validation fails, instead of the misleading "Session was not created with authentication info or custom provider" message.

1.0.56

2026-05-29

• Free and Student users can select models other than Auto in the model picker
• ThemePicker side-by-side layout fits within a 120-column terminal without wrapping
• Model picker shows accurate total context window size per pricing tier
• Add builtInAgents.rubberDuck setting to enable or disable the rubber duck agent via copilot config
• Extended key reporting works correctly in tmux when Kitty keyboard protocol is unavailable
• Config and settings files are written atomically to prevent data loss when multiple CLI processes run concurrently
• BYOK provider configuration now applies correctly to ACP sessions
• MCP tools that return both human-readable content text and a structuredContent payload now surface both to the agent instead of dropping either side. When the text is the literal JSON serialization (per MCP spec §5.2.6) it is deduplicated; otherwise the two are concatenated.
• Fix /context small-token legend formatting and free-space grid rounding
• Reasoning effort picker respects model capabilities — options not supported by the model are no longer shown
• File paths in /env output display with correct formatting
• Reasoning text always displays above the assistant response in the conversation timeline
• Assistant responses render without single-word orphan lines in the terminal timeline
• Diff view uses a continuous scroll layout with sticky file and hunk headers, full terminal width, and theme-aware colors
• web_fetch tool prefers markdown content when available, using HTTP content negotiation for cleaner results from documentation sites
• Cursor stays at correct position after pasting text that contains tab characters
• Code review agent now uses the same model as the current session instead of a fixed default
• When gh CLI is on PATH, GitHub MCP server now omits redundant gh-replaceable tools by default, reducing token usage
• Context window tier selection now persists durably in session events and survives SDK-only resume paths so tier-derived limits are reapplied to request, compaction, and truncation logic without app-level repair
• Remote session URL correctly uses the repository owner/name instead of literal 'copilot'
• Trusted folder confirmation message clarifies that permissions may be remembered for the session

1.0.56-2

Improved

• Diff view uses a continuous scroll layout with sticky file and hunk headers, full terminal width, and theme-aware colors
• web_fetch tool prefers markdown content when available, using HTTP content negotiation for cleaner results from documentation sites

Fixed

• BYOK provider configuration now applies correctly to ACP sessions
• MCP tools that return both human-readable content text and a structuredContent payload now surface both to the agent instead of dropping either side. When the text is the literal JSON serialization (per MCP spec §5.2.6) it is deduplicated; otherwise the two are concatenated.
• Fix /context small-token legend formatting and free-space grid rounding
• Reasoning effort picker respects model capabilities — options not supported by the model are no longer shown
• File paths in /env output display with correct formatting
• Reasoning text always displays above the assistant response in the conversation timeline
• Assistant responses render without single-word orphan lines in the terminal timeline

1.0.56-1

Improved

• Code review agent now uses the same model as the current session instead of a fixed default
• When gh CLI is on PATH, GitHub MCP server now omits redundant gh-replaceable tools by default, reducing token usage

Fixed

• Cursor stays at correct position after pasting text that contains tab characters