{"slug": "vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses", "title": "Vercel AI SDK 7 adds HarnessAgent for coding-agent harnesses", "summary": "Vercel released AI SDK 7 with HarnessAgent, an experimental API that provides a unified programming model for running coding agent harnesses like Claude Code, Codex, and Pi harness, supporting sandboxed sessions and SDK-compatible streams.", "body_md": "Vercel Developers (@vercel dev) said Friday that Vercel's AI SDK now supports agent harnesses for Claude Code, Codex and the Pi harness, with sandboxed sessions and SDK compatible streams, in a post on X. Vercel detailed the release in a changelog post, saying AI SDK 7 introduces HarnessAgent , an experimental canary API meant to give developers one programming model for running established coding agent harnesses. https://x.com/vercel dev/status/2065509970775519569 The move pushes the AI SDK ...", "url": "https://wpnews.pro/news/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses", "canonical_source": "https://runtimewire.com/article/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses", "published_at": "2026-06-12 20:53:48+00:00", "updated_at": "2026-06-12 21:33:04.331117+00:00", "lang": "en", "topics": ["ai-tools", "ai-agents", "ai-products", "ai-infrastructure", "artificial-intelligence"], "entities": ["Vercel", "AI SDK", "HarnessAgent", "Claude Code", "Codex", "Pi harness"], "alternates": {"html": "https://wpnews.pro/news/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses", "markdown": "https://wpnews.pro/news/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses.md", "text": "https://wpnews.pro/news/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses.txt", "jsonld": "https://wpnews.pro/news/vercel-ai-sdk-7-adds-harnessagent-for-coding-agent-harnesses.jsonld"}}