Grok Harness (ACOS + Grok Build) Skill

Grok Harness (ACOS + Grok Build)

Grok Build (xAI Grok CLI/TUI) is a first-class harness in the 5-fleet (Claude canonical, Grok, Antigravity/AGY, Gemini, Codex). ACOS provides deep integration via grok-harness-adapter (adapters/grok/index.ts + install.sh --platform=grok).

Quick Start in Grok

# From any project
./install.sh --platform=grok   # or in ACOS source itself

# Then:
grok
/hooks-trust
/skills harness-integration
# or just describe: "use repo-mastery on this ACOS change + gstack qa if UI"

Grok loads (priority):

Project: GROK.md + .grok/skills/ (highest) + .grok/hooks/ + .grok/agents/
Global: ~/.grok/skills/ + ~/.grok/hooks/
Compat: ~/.claude/skills/ + ~/.claude/ (full ACOS catalog via junctions)

The 4 grok-personal .grok-Only Excellence Seeds (SIP §5 encoded-self; .grok ONLY)

Per SHARING.md + SIP, these stay ONLY in project .grok/skills/ (never in ACOS core .claude or shared flat catalog):

harness-integration — SessionStart excellence + PreToolUse gates + auto repo-mastery + multi-delegate + claude compat.
excellence-review — God 99 gates: repo-mastery + plan-*-review + verification-loop + santa-method + gstack (qa/browse/design) + cso.
repo-mastery — Deep ACOS/FrankX/SIS/Arcanea ecosystem map. Read rules first (CLAUDE/AGENTS/GROK.md). Use MCP github/fs-starlight + subagents.
multi-harness-orchestrator — Detect task → choose best harness (claude for heavy plan/eng) → emit exact shell cmd with full injected context (rules + DNA + partition filter + gstack/santa).

2 .grok/hooks/ json ONLY (for /hooks-trust):

session-start-excellence.json
pretooluse-excellence.json

Core ACOS (gstack, santa, verification, brand-voice, mcp-architecture, nextjs-*, etc.) reach Grok via .claude/ compat junctions. See adapters/grok/index.ts:getGrokSeeds() and install_grok() in install.sh for generator.

Architecture: Full Stack

User Intent (Grok TUI / natural)
    ↓
Grok native: /skills, /task (subagents: explore/plan/general), MCP (search_tool/use_tool), image/video, terminal/pwsh, edit
    ↓ (auto via seeds/hooks)
harness-integration + excellence-review (grok-personal .grok-only seeds)
    ↓
repo-mastery (read CLAUDE.md/AGENTS.md/GROK.md first; deeper wins)
    ↓
ACOS substrate: skill-rules (if compat), commands (/acos router), 90+ skills, 38 agents, workflows
    ↓ (delegation)
multi-harness-orchestrator → e.g. `claude -p "$(cat CLAUDE.md; cat SHARING.md) <task> — apply gstack + santa + repo-mastery" --cwd ...`
    ↓
SIP substrate (Starlight Intelligence Protocol) + memory/MCP cross-repo
    ↓
Output with evidence (gstack screenshots, metrics, atomic commits, SIP attest)

5-Fleet Parity + Partition (core vs grok-personal vs personal-creative):

Grok personal excellence: the exact 4 seeds + 2 json hooks (.grok only, "a bit magical" opt-in per SIP §5).
Core/shared: everything else (gstack, ACOS commands/skills/agents, mcp-*, frankx-brand). Via .claude/ junctions from ACOS + claude-code-config + SIS.
Use /sip-share-audit (or equiv) before moving anything across.

Grok strengths leveraged: real-time TUI, subagents (with persona/capability_mode/read-only/worktree/resume_from), MCP discovery (search_tool then use_tool), built-in gen (Imagine + video), strong native terminal/grep/edit.

Excellence Gates (Mandatory — God 99)

Before any edit, PR, ship, or structural rec:

repo-mastery (inventory + read all rules files)
plan reviews (ceo/eng/design via subagent or delegate)
verification-loop + santa-method (adversarial dual pass)
gstack (browse/qa/design-review/benchmark for UI/web/perf; screenshots)
cso/security-auditor if data/auth
rules-distill + skill-comply
Post: document-release + log

Never ship without evidence. "Show don't tell."

MCP in Grok (for repo-mastery / cross-starlight)

Discovery: search_tool "github" or "fs-starlight" or "git"
Call: use_tool "github__search_issues" ... (full qualified)
github: frankxai org (agentic-creator-os, Starlight-Intelligence-System, frankx.ai-vercel-website, claude-code-config, arcanea-*, kura, ...)
fs-starlight: starlight/ (repos/, .claude/, scratch/)
Fallback: gh CLI (auth as frankxai), terminal git, native list_dir/read_file/grep/search_replace

See global grok-harness-adapter skill + mcp-architecture for patterns.

Commands / Natural Usage in Grok

/skills grok-harness or "grok support" → this skill
/skills harness-integration (if seeded) or "setup harness"
/skills repo-mastery + "on agentic-creator-os + changes for Grok"
/skills excellence-review
Natural: "Write a blog... " → content-strategy (via ACOS compat)
"QA the site with gstack" → gstack-*
Delegate heavy: "use claude for the plan review"

See adapters/grok/index.ts for parseGrokCommand, GROK_SKILL_MAPPINGS, processGrokInput (maps native /skills + ACOS natural → workflows/excellence).

adapters/grok/ (index.ts programmatic: isGrok, generateGrokContext, getGrokSeeds, installGrokPlatform)
install.sh --platform=grok (and --platform=all)
CLAUDE.md (Grok section + full ACOS)
AGENTS.md
adapters/README.md (parity table)
Global: ~/.claude/skills/grok-harness-adapter/SKILL.md (detailed setup, delegation examples, MCP)
SIP / SHARING.md (partition rules; read first on cross)
gstack (all QA; injected for Grok)

For ACOS Contributors

When enhancing harness:

Update BOTH adapters/grok/index.ts (TS source for programmatic) AND the inline seeds in install.sh:install_grok (bash runtime) — keep identical.
Update this skill + CLAUDE.md + README.md + AGENTS.md
Test: ./install.sh --platform=grok --target /tmp/acos-grok-test && ls /tmp/acos-grok-test/.grok/skills/
Never leak the 4+2 grok-personal seeds into .claude/skills/ or ACOS published files.
Add tests/scripts if extending adapter.
Run excellence gates + gstack verification on changes.

Built on SIP v1.1.1 (starlightintelligence.org/protocol). 5-fleet. Small reversible. God 99.

Frank DNA: premium, measurable, actionable, direct/technical/warm/playful. Use this harness for TUI speed + MCP depth on starlight work.

Agent Skills: Grok Harness (ACOS + Grok Build)

Install this agent skill to your local

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