GitHub Copilot CLI v1.0.21

GitHub Copilot CLI v1.0.21 was released on .

Summary

2026-04-07 - Add copilot mcp command for managing MCP servers - Spinner no longer appears stuck when a long-running async shell command is active - Enterprise GitHub URL input in the login flow now...

Release Context

  • This was the 66th GitHub Copilot CLI release of 2026 tracked by Havoptic.
  • It shipped the same day as GitHub Copilot CLI v1.0.20 (April 7, 2026).

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

Compare GitHub Copilot CLI: vs Claude Code · vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs Devin Desktop · vs Antigravity CLI

Release Notes

2026-04-07 - Add copilot mcp command for managing MCP servers - Spinner no longer appears stuck when a long-running async shell command is active - Enterprise GitHub URL input in the login flow now accepts keyboard input and submits on Enter - Slash command picker no longer flickers or shifts the input while filtering - Timeline no longer goes blank when content shrinks (e.g., after cancelling or tool completion) - Plan mode timeline display shows user text without a redundant "Plan" prefix - Reduce memory usage by automatically shutting down shell sessions that are no longer needed - Hooks configured with PascalCase event names now receive VS Code-compatible snakecase payloads with hookeventname, sessionid, and ISO 8601 timestamps

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