Sync delta specs from a change to main specs. Use when the user wants to update main specs with changes from a delta spec, without archiving the change.
Install
npx skills add microsoft/rayfin --skill openspec-sync-specsnpx skills add microsoft/rayfin --skill openspec-sync-specs -a claude-code -gnpx skills add microsoft/rayfin --skill openspec-sync-specs -a codex -ggemini skills install https://github.com/microsoft/rayfin.git --path .github/skills/openspec-sync-specsgh skill install microsoft/rayfin openspec-sync-specsgit clone --depth 1 https://github.com/microsoft/rayfin /tmp/microsoft__rayfin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__rayfin/.github/skills/openspec-sync-specs ~/.claude/skills/openspec-sync-specs # Claude Code
cp -R /tmp/microsoft__rayfin/.github/skills/openspec-sync-specs ~/.agents/skills/openspec-sync-specs # Codex, Cursor, Gemini CLI, Copilot, OpenCode