AI Briefing
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AI SDK Harness Layer Officially Supports GitHub Copilot

·2026.09.10 09:00

Key point

The AI SDK harness layer now supports GitHub Copilot via an official adapter, enabling coding agent switching without code changes.

Details

The harness layer of AI SDK has started supporting GitHub Copilot via the official adapter @ai-sdk/harness-github-copilot. This layer allows applications to run various coding agents using the same HarnessAgent interface, providing the flexibility to swap agents without modifying application code.

Internally, the adapter uses @ai-sdk/harness-acp to connect GitHub Copilot to HarnessAgent via the Agent Client Protocol (ACP). This allows developers to easily integrate it by passing githubCopilot as an argument.

In addition to GitHub Copilot, the currently supported harnesses are:

  • Claude Code
  • Cline
  • Codex
  • Cursor
  • Deep Agents
  • fx
  • Grok Build
  • OpenCode
  • Pi

Additional harness support is expected to be announced soon.

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