It appears there is no way for extensions to invoke this routing via the VS Code plugin API:

I am working on the Copilot Chat extension and have NuGet packages which contain an embedded .mcp/server.json file. I would like to map this to VS Code MCP JSON using the toScannedMcpServerAndInputs method.

That way, it can be flowed through the assisted installation flow.

I propose a new enabledApiProposals is added that exposes this mapping behavior.

Alternatively, the contract of github.copilot.chat.mcp.setup.flow could be changed to allow server.json format to be returned while still supporting VS Code's JSON format also -- perhaps with an enum to differentiate, thus allowing VS Code internally to do the mapping.

Related to #257679