AI SDK OpenCode Harness

The OpenCode harness connects HarnessAgent to OpenCode through a sandboxed bridge.

Native OpenCode configuration

Use openCodeConfig to pass native OpenCode settings that do not have a dedicated adapter option. For example, OpenCode supports selecting a model for an individual agent:

import { createOpenCode } from '@ai-sdk/harness-opencode';

const adapter = createOpenCode({
  openCodeConfig: {
    agent: {
      general: {
        model: 'provider/model-id',
      },
    },
  },
});

Adapter-managed settings take precedence when the same key is present in openCodeConfig. Agent-local permission and deprecated tools settings are ignored so they cannot bypass harness permissions or built-in tool filtering.

See the AI SDK documentation for usage.