Universal.Operative.Sdk.Discrete.OpenAI.ChatGpt 3.0.0

Universal.Operative.Sdk.Discrete.OpenAI.ChatGpt

An IModel adapter for the ChatGPT Responses backend. This is not the OpenAI Platform Responses API; use Universal.Operative.Sdk.Discrete.OpenAI for that API and its broader surface.

dotnet add package Universal.Operative.Sdk.Discrete.OpenAI.ChatGpt

Authentication

Use an access token directly when token storage and refresh are handled elsewhere:

using var client = new ChatGptResponsesClient(accessToken, accountId);

Use an auth.json file for persisted credentials and automatic refresh:

using var httpClient = new HttpClient();
using var credentials = new AuthenticationFileCredentialProvider(authFilePath, httpClient);
using var client = new ChatGptResponsesClient(httpClient, credentials);

Use OAuthClient to create and complete a browser authorization session:

var oauth = new OAuthClient(httpClient);
var authorization = oauth.CreateAuthorizationSession();

string code = oauth.ReadAuthorizationCode(callbackUri, authorization);
OAuthResponse response = await oauth.ExchangeCodeAsync(code, authorization);
credentials.Save(response);

using Universal.OpenAI.ChatGpt.Client;
using Universal.OpenAI.ChatGpt.Client.Responses;
using Universal.Operative.Sdk;
using Universal.Operative.Sdk.Discrete;
using Universal.Operative.Sdk.Discrete.OpenAI.ChatGpt;

using var httpClient = new HttpClient();
using var credentials = new AuthenticationFileCredentialProvider(authFilePath, httpClient);
using var client = new ChatGptResponsesClient(httpClient, credentials);

IModel model = new ResponsesModel(client, new ResponsesModel.Options
{
    ModelId = Models.Gpt56Luna,
    ReasoningEffort = ReasoningEfforts.Medium,
});

Message response = await model.CompleteAsync(new Conversation
{
    Messages =
    {
        new Message
        {
            Role = MessageRoles.User,
            Content = { new TextBlock("Explain this code.") },
        },
    },
});

StreamAsync preserves the Responses SSE lifecycle as universal indexed block events. Text, reasoning summaries, refusals, and function-call arguments are emitted incrementally when the backend supplies deltas; completed output items remain the fallback for content the backend only supplies at settlement.

Persisted conversations can move between providers. Before serialization, the adapter converts provider-hosted tool activity into bounded text context, omits unsupported provider-specific blocks, and removes unmatched historical tool calls/results that ChatGPT cannot replay safely.

License

Free for noncommercial use under the Universal.Operative Noncommercial License. Commercial use requires a separate license from Andrew Ong.