Show HN: Grok-ultracode – standing ultracode for Grok Build CLI Developer Dmitrii Malakhov released grok-ultracode, an open-source plugin that brings Claude Code's ultracode workflow pattern to xAI's Grok Build CLI, enabling the agent to author and launch deterministic workflow scripts on substantive tasks instead of orchestrating turn by turn. The plugin, installable via 'grok plugin install malakhov-dmitrii/grok-ultracode --trust', requires a Grok Build version that ships the create-workflow bundled skill and is not affiliated with xAI or Anthropic. It is not a native '/effort ultracode' flag but a skill plus optional home rule, with a default run cap of 24 agents. Standing Claude Code ultracode https://code.claude.com/docs/en/workflows for Grok Build CLI https://x.ai/news/grok-build-cli . Grok already has the runtime: deterministic workflow scripts via the workflow tool and /workflows . This plugin is the missing /effort ultracode layer — on every substantive task the agent authors a workflow and launches it, instead of orchestrating turn by turn. Not affiliated with xAI or Anthropic. Claude Code already has this natively; do not install this plugin there. Plugin skill + /ultracode : grok plugin install malakhov-dmitrii/grok-ultracode --trust Enable it in /plugins if it stays off Grok plugins start disabled . Then install the standing rule — plugins cannot write ~/.grok/rules/ : git clone https://github.com/malakhov-dmitrii/grok-ultracode.git cd grok-ultracode ./scripts/install-rule.sh No-plugin path skill + rule into user dirs : ./scripts/install.sh Requires a Grok Build that ships ~/.grok/bundled/skills/create-workflow/SKILL.md the workflow dialect . Too-old builds will not run authored scripts. New Grok session: /ultracode Reply should be ULTRACODE ON . After that, bugfixes, reviews, migrations, and research become workflows. Watch /workflows . Stop with /ultracode off . One-shot, no standing mode: ultracode: audit src/routes for missing auth or use a workflow to … . - Not a Grok harness patch. No native /effort ultracode flag exists; this is a skill + optional home rule. - Not ultrawork / ralph . Those still use the model as orchestrator. Ultracode puts the loop in a script. - Not cheap. Default run cap is 24 agents medium . Skip status questions and one-file answers; those stay in the conversation. skills/ultracode/SKILL.md standing protocol + author/launch loop rules/ultracode.md always-loaded opt-in pointer copy to ~/.grok/rules plugin.json Grok plugin manifest .grok-plugin/ marketplace index + manifest Dialect and host API live in Grok Build itself create-workflow bundled skill . This repo does not vendor that file. MIT