fx is now available in the AI SDK harness layer

Vercel's AI SDK harness layer now supports fx, its lightweight open-source coding agent, via the official @ai-sdk/harness-fx adapter, which connects over the Agent Client Protocol using @ai-sdk/harness-acp. fx joins Claude Code, Cline, Codex, Cursor, Deep Agents, Grok Build, OpenCode, and Pi as supported harnesses, enabling developers to integrate fx into applications with a single API.

The AI SDK harness layer https://vercel.com/changelog/program-agent-harnesses-with-ai-sdk now supports fx https://fx.sh , Vercel's lightweight, open-source coding agent. The harness layer provides one API for running coding agents in your application, so you can add fx without building a separate integration. Configure HarnessAgent with the official @ai-sdk/harness-fx adapter: The @ai-sdk/harness-fx adapter connects to fx over the Agent Client Protocol ACP using @ai-sdk/harness-acp https://vercel.com/changelog/use-acp-compatible-harnesses-with-the-ai-sdk-harness-layer . fx joins Claude Code, Cline, Codex, Cursor, Deep Agents, Grok Build, OpenCode, and Pi in the list of supported harnesses. Read the fx harness documentation https://ai-sdk.dev/v7/providers/ai-sdk-harnesses/fx to get started.