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Comment by dan-kwiat | Hacker News Reader

I just made a tool which parses any OpenAPI spec to MCP spec: https://www.open-mcp.org (literally just deployed so I don't know if the DNS has propagated globally yet..)

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I received a 500 response when I attempted to create an MCP server for an API.

I was using this URL: https://engineapi.moonstream.to/metatx/openapi.json

The response body:

    {success: false, error: "Server URL must start with https:// or http://"}

Thanks, I just added support for relative URLs, try again. Your OpenAPI spec defines a relative base URL for the server /metatx but no domain. You can now specify the full base URL in your MCP client's environment variables:

`OPEN_MCP_BASE_URL="https://engineapi.moonstream.to/metatx"`

very cool, I tried to feed it the toolhouse.ai openapi spec and it worked VERY quickly!! wow

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