Authoritative reference for working on MultiTable's Grok Build (xAI) provider, driven by grok agent stdio over line-delimited JSON-RPC (Agent Client Protocol). Trigger when the user mentions Grok Build, the Grok adapter, grok agent stdio, GrokAdapter, grok-build-0.1, ACP for Grok, ~/.grok/, the default/auto/plan modes, --always-approve, --agent-profile, --reasoning-effort, x.ai/billing, the SuperGrok/SuperHeavy subscription, GROK_CODE_XAI_API_KEY, usage limits / rate limits (why they're off for Grok; the xAI billing out-of-band path), or modifying anything under packages/daemon/src/agent/providers/grok.ts, packages/daemon/src/agent/providers/grok-acp/, or packages/daemon/src/transcripts/grokParser.ts.
$npx -y skills add erickalfaro/multitable --skill grok-buildInstalls into the current project.
Run `npx skills use "https://github.com/erickalfaro/multitable" --skill "erickalfaro/multitable/grok-build"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/erickalfaro/multitable" that are relevant to the current task. Run `npx skills add "https://github.com/erickalfaro/multitable"` and select the relevant skills, then follow their instructions.