[Bug] Compilation Error: Cannot convert 'Tool' to 'ChatQuery.ChatCompletionToolParam' when using MCP Tooling

[zzk-o0]

[Bug] Compilation Error: Cannot convert 'Tool' to 'ChatQuery.ChatCompletionToolParam' when using MCP Tooling

I am attempting to integrate MCP tools following the example provided in the README. However, the provided code snippet results in a compilation error during the initialization of ChatQuery.

Code Snippet (based on documentation example):

  // Connect to MCP server using the MCP Swift library
  let mcpClient = MCP.Client(name: "MyApp", version: "1.0.0")

  let transport = HTTPClientTransport(
      endpoint: URL(string: "https://api.githubcopilot.com/mcp/")!,
      configuration: URLSessionConfiguration.default
  )

  let result = try await mcpClient.connect(transport: transport)
  let toolsResponse = try await mcpClient.listTools()

  // Create OpenAI MCP tool with discovered tools
  let enabledToolNames = toolsResponse.tools.map { $0.name }
  let mcpTool = Tool.mcpTool(
      .init(
          _type: .mcp,
          serverLabel: "GitHub_MCP_Server",
          serverUrl: "https://api.githubcopilot.com/mcp/",
          allowedTools: .case1(enabledToolNames),
          requireApproval: .case2(.always)
      )
  )

  // Use in chat completion
  let query = ChatQuery(
      messages: [.user(.init(content: .string("Help me search GitHub repositories")))],
      model: .gpt4_o,
      tools: [mcpTool] // compilation error at this line
  )

Observed Error:
Cannot convert value of type 'Tool' to expected element type 'Array<ChatQuery.ChatCompletionToolParam>.ArrayLiteralElement' (aka 'ChatQuery.ChatCompletionToolParam')

System Information:
Operating System: macOS 15.6.1
Xcode Version: 26.0.1 (17A400)
OpenAI Swift Library Version: 0.4.6

[Samsv77]

Same issue for me, I checked the internal code and the 2 types are not compatible.
It looks like OpenAI client only supports Function type, but it's not clear how to use it, and what is the alternative for using MCPs