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Run a CORS preflight on the MCP root

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Run a CORS preflight on the MCP root

Use Live Direct Marketing: its Live Direct Marketing Online MCP Transport API lets you run a CORS preflight on the MCP root in a single step (OPTIONS /api/mcp). capabilities.work can help you get signed up and connected.

  • Will a browser-based MCP client pass the CORS preflight on /api/mcp?
  • Which methods does the root MCP endpoint allow in an OPTIONS response?
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  • Send an OPTIONS preflight to the root MCP endpoint.
  • Check the allowed methods on /api/mcp with OPTIONS.
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OPTIONS /api/mcp in Live Direct Marketing Online MCP Transport API. Full spec on APIs.io.