Ollama Local LLM Integration — sgcWebSockets | eSeGeCe

Ollama Local LLM

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TsgcHTTP_API_Ollama

Ollama REST API client for local chat completions, embeddings and model management.

Component class

TsgcHTTP_API_Ollama

Protocol

Ollama REST API over HTTP

Platforms

Windows, macOS, Linux, iOS, Android

Edition

Enterprise / sgcAI

Drop the component, point it at localhost, go

Ollama runs locally and needs no API key. Set OllamaOptions.BaseUrl to your local server (default http://localhost:11434/api), then call _CreateMessage or build a TsgcOllamaClass_Request_ChatCompletion and call CreateMessage.

uses
  sgcHTTP_API_Ollama;

var
  Ollama: TsgcHTTP_API_Ollama;
begin
  Ollama := TsgcHTTP_API_Ollama.Create(nil);
  // Local server, no API key needed
  Ollama.OllamaOptions.BaseUrl := 'http://localhost:11434/api';

  // Simple one-shot message
  Memo1.Lines.Text := Ollama._CreateMessage(
    'llama3',
    'What are the benefits of WebSockets?');

  // Streaming — handle OnHTTPAPISSE per chunk
  Ollama.OnHTTPAPISSE := HandleSSE;
  Ollama._CreateMessageStream(
    'llama3',
    'Summarise RFC 6455');
end;

procedure TForm1.HandleSSE(Sender: TObject;
  const aEvent, aData: string;
  var Cancel: Boolean);
begin
  Memo1.Lines.Add(aEvent + ': ' + aData);
end;
// uses: sgcHTTP_API_Ollama
TsgcHTTP_API_Ollama *Ollama = new TsgcHTTP_API_Ollama(this);
// Local server, no API key needed
Ollama->OllamaOptions->BaseUrl = "http://localhost:11434/api";

// Simple one-shot message
Memo1->Lines->Text = Ollama->_CreateMessage(
  "llama3",
  "What are the benefits of WebSockets?");

// Streaming — OnHTTPAPISSE fires per chunk
Ollama->OnHTTPAPISSE = HandleSSE;
Ollama->_CreateMessageStream(
  "llama3",
  "Summarise RFC 6455");
using esegece.sgcWebSockets;

var ollama = new TsgcHTTPAPI_Ollama();
// Local server, no API key needed
ollama.OllamaOptions.BaseUrl = "http://localhost:11434/api";

// Simple one-shot message
Console.WriteLine(ollama._CreateMessage(
  "llama3",
  "What are the benefits of WebSockets?"));

// Streaming via Server-Sent Events
ollama.OnHTTPAPISSE += (sender, ev, data, cancel) => Console.Write(data);
ollama._CreateMessageStream(
  "llama3",
  "Summarise RFC 6455");

What's inside

Typed request / response classes for chat completions and embeddings, plus model management and streaming over Server-Sent Events.

Messages & chat

CreateMessage sends a typed TsgcOllamaClass_Request_ChatCompletion and returns a parsed response. _CreateMessage, _CreateMessageWithSystem and _CreateMessageStream are string shortcuts, with streaming deltas delivered through OnHTTPAPISSE.

Embeddings

CreateEmbeddings turns input text into a dense vector using a locally pulled embedding model such as nomic-embed-text or mxbai-embed-large, returning a TsgcOllamaClass_Response_Embeddings.

Models

Manage the models on your machine: _GetModels and _GetTags list what is available, _ShowModel reads model details, _PullModel downloads from the Ollama library and _DeleteModel removes a local model.

Local & private

Every request targets a local Ollama server (default http://localhost:11434/api) so no data leaves your network and no API key is required. Point OllamaOptions.BaseUrl at a remote or containerized instance when you need to.

Reliability & diagnostics

CircuitBreaker short-circuits requests when the server is unhealthy; ReadTimeout and TLSOptions tune the HTTP/HTTPS layer; OnHTTPAPIException surfaces failures; OnHTTPAPISSE streams server-sent events.

Specifications & references

Authoritative sources for the protocols this component implements.

Documentation & Demos

Deep-link to the component reference, grab the ready-to-run demo project, and download the trial.

Online Help — Ollama Full property, method and event reference for this component.
Demo Project — Demos\AI\Ollama Ready-to-run example project. Ships inside the sgcWebSockets package — download the trial below.
User Manual (PDF) Comprehensive manual covering every component in the library.
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