FastestMCP.Client.OAuth.ClientAssertionProvider behaviour (fastest_mcp v0.3.0)

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Host boundary for private_key_jwt client authentication.

FastestMCP supplies the values a host needs to create a short-lived JWT client assertion, but deliberately does not load private keys or implement JWT signing. The returned assertion is sent only to the discovered token endpoint.

Summary

Types

response()

Callbacks

assertion(t)

Types

response()

@type response() :: {:ok, String.t()} | {:error, term()}

Callbacks

assertion(t)

@callback assertion(FastestMCP.Client.OAuth.ClientAssertionProvider.Request.t()) ::
  response()