AI SDK - Grok Build Harness

The @ai-sdk/harness-grok-build package adapts Grok Build to the AI SDK harness abstraction through the Agent Client Protocol (ACP).

Setup

npm install @ai-sdk/harness @ai-sdk/harness-grok-build @ai-sdk/sandbox-vercel

Usage

import { HarnessAgent } from '@ai-sdk/harness/agent';
import { grokBuild } from '@ai-sdk/harness-grok-build';
import { createVercelSandbox } from '@ai-sdk/sandbox-vercel';

const agent = new HarnessAgent({
  harness: grokBuild,
  sandbox: createVercelSandbox({
    runtime: 'node24',
    ports: [4000],
  }),
});

const session = await agent.createSession();

try {
  const result = await agent.generate({
    session,
    prompt: 'Inspect this project and summarize its purpose.',
  });
  console.log(result.text);
} finally {
  await session.destroy();
}

The adapter uses @ai-sdk/harness-acp, which installs the pinned Grok Build CLI inside the sandbox. The sandbox must provide network access and at least one exposed TCP port.

Set XAI_API_KEY for direct authentication. Set AI_GATEWAY_API_KEY or VERCEL_OIDC_TOKEN to use AI Gateway instead, or pass an isolated authentication environment with createGrokBuild({ auth: { AI_GATEWAY_API_KEY: token } }).

See the Grok Build harness documentation for settings, tools, and limitations.