[bot] Add Critic Agent, new hook events, MCP auth & built-in skills (CLI v1.0.15–v1.0.18)#33
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…0.15–v1.0.18) New features from copilot-cli v1.0.15–v1.0.18 (2026-04-01 to 2026-04-04): - Add Critic Agent section: built-in second-opinion reviewer for plans and complex implementations (experimental, Claude models) - Add notification, preToolUse, postToolUse, postToolUseFailure hook events to Hooks section; document permissionDecision 'allow' behavior - Add /mcp auth command with device code flow (RFC 8628) fallback - Add mcp.config.list/add/update/remove server RPCs to MCP section - Add built-in skills note to Skills section (shipped in v1.0.17) - Update ASCII diagram, ToC, and Quick Reference table for Critic Agent Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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What was found
Updates from Copilot CLI v1.0.15–v1.0.18 (released 2026-04-01 to 2026-04-04):
New features
notificationhook event (v1.0.18) — New hook event that fires asynchronously on shell completion, permission prompts, elicitation dialogs, and agent completion.preToolUsehookpermissionDecision 'allow'(v1.0.18) — SettingpermissionDecisionto'allow'in apreToolUsehook now suppresses the tool approval prompt.postToolUseFailurehook event (from awesome-copilot docs, v1.0.15 era) — New event that fires when a tool fails;postToolUsenow only fires on success./mcp authwith device code flow (v1.0.15) —/mcp auth (server)command for authenticating with MCP servers, with RFC 8628 device code flow fallback for providers requiring HTTPS (e.g., Slack).mcp.configserver RPCs (v1.0.15) —mcp.config.list/add/update/removefor programmatic management of persistent MCP server configurations.What was updated
Critic Agententry/mcp authsubsection (with device code flow) andmcp.configRPC tablepreToolUse,postToolUse,postToolUseFailure, andnotificationevents; added config notes for the new behaviorsSources