GitHub Copilot CLI v0.0.415

GitHub Copilot CLI v0.0.415 was released on .

Summary

2026-02-23 - Skill files saved with a UTF-8 BOM (common on Windows editors) now load correctly instead of failing with a frontmatter parse error - Custom agents support the model field to specify w...

Release Context

  • This was the 38th GitHub Copilot CLI release of 2026 tracked by Havoptic.
  • It shipped 3 days after GitHub Copilot CLI v0.0.414 (February 21, 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

2026-02-23 - Skill files saved with a UTF-8 BOM (common on Windows editors) now load correctly instead of failing with a frontmatter parse error - Custom agents support the model field to specify which model to use, and unknown fields now warn instead of blocking agent load - Plan approval menu shows model-curated actions with a recommended option highlighted first, including autopilot+fleet for parallelizable work - Env loading indicator no longer hangs indefinitely on MCP startup error or session resume - Add showfile tool for presenting code and diffs to the user - Add env loading indicator showing skills, MCPs, plugins, ... being loaded - MCP tool results with giant single lines are truncated correctly - /plugin marketplace add and /plugin install support local paths containing spaces - /mcp show groups servers into User, Workspace, Plugins, and Built-in sections and makes all servers navigable - Agent now knows which model is powering it when asked - Ctrl+A/E cycle through visual lines in wrapped input; Home/End navigate within a visual line; Ctrl+Home/End jump to text boundaries

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