Support for Authorization while a tool is being invoked.

[loki-mine]

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Your Question

How to implement such scenario?
Is there a way a header can be accessed inside the tool or something similar.
The scenario is, client is not in my control and while a tool is being invoked I want to restrict what information is being returned.

[findleyr]

@loki-mine sorry this didn't get a response -- I was just revisiting our discussions.

With recent versions of the SDK (and now v1.0.0), this is available in CallToolRequest.Extra: https://pkg.go.dev/github.com/modelcontextprotocol/go-sdk/mcp#RequestExtra