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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.

read1 min views1 publishedAug 21, 2026
Show HN: Grok-ultracode – standing ultracode for Grok Build CLI
Image: Michielbdejong (auto-discovered)

Standing Claude Code ultracode for 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

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