feat: Add Enterprise Managed Authorization (SEP-990) support (#1305)

src/ModelContextProtocol.Core/Authentication/JwtBearerAccessTokenResponse.cs

@@ -0,0 +1,37 @@
+namespace ModelContextProtocol.Authentication;
+
+/// <summary>
+/// Represents the response from a JWT Bearer grant (RFC 7523) access token request.
+/// </summary>
+internal sealed class JwtBearerAccessTokenResponse
+{
+    /// <summary>
+    /// Gets or sets the OAuth access token.
+    /// </summary>
+    [System.Text.Json.Serialization.JsonPropertyName("access_token")]
+    public string AccessToken { get; set; } = null!;
+
+    /// <summary>
+    /// Gets or sets the token type. This should be "Bearer".
+    /// </summary>
+    [System.Text.Json.Serialization.JsonPropertyName("token_type")]
+    public string TokenType { get; set; } = null!;
+
+    /// <summary>
+    /// Gets or sets the lifetime in seconds of the access token.
+    /// </summary>
+    [System.Text.Json.Serialization.JsonPropertyName("expires_in")]
+    public int? ExpiresIn { get; set; }
+
+    /// <summary>
+    /// Gets or sets the refresh token.
+    /// </summary>
+    [System.Text.Json.Serialization.JsonPropertyName("refresh_token")]
+    public string? RefreshToken { get; set; }
+
+    /// <summary>
+    /// Gets or sets the scope of the access token.
+    /// </summary>
+    [System.Text.Json.Serialization.JsonPropertyName("scope")]
+    public string? Scope { get; set; }
+}