Talk to language models with AIMODEL(), NEWAIMODEL() and AIPARSER()

Total.js 5 · total5@0.0.19 aillmintegrations Executed against Total.js 5

total5 does not ship a connection to any provider. It gives you three pieces that work together:

NEWAIMODEL('name', config, driver) registers the driver of one or more models ('a,b' registers the same driver for two names). The driver is function(ai, done): ai.payload has model, messages, tools, prompt and think, ai.config is the configuration and ai.options.stream is the function the caller passed to stream() (or undefined). Answer with done(error, response).
AIMODEL('name') starts a request for a registered model and returns a builder. system(text), user(text) and assistant(text) append a message, prompt(text), tool(definition) and think() fill the rest of the payload, and configure({ ... }) adds to ai.config for this call only. Finish it with callback(fn), await promise($) or stream(fn); the driver runs after the current turn, so you can chain everything first.
AIPARSER(provider) returns a parser for the streamed answer of a provider (the source of total5 knows openai, claude/anthropic, gemini/google, ollama and openai_responses, and reads any other name as a generic format; only openai is run below). write(chunk) takes pieces of the stream (it keeps incomplete lines until the next piece), end() finishes it, and both return { content, thinking, tools, reasoning }. parser.on('content', fn) is called with every part of the text as it arrives.

A model that was not registered answers with the error AI model not found.. The example registers a local driver that returns a response from the supplied messages.

definitions/ai.js

NEWAIMODEL('echo', { prefix: 'Echo' }, function(ai, done) {

	const last = ai.payload.messages.filter(n => n.role === 'user').pop();
	const text = ai.config.prefix + ': ' + (last ? last.content : '');

	// A real driver would send ai.payload to the provider and send the pieces to ai.options.stream
	if (ai.options.stream) {
		for (const word of text.split(' '))
			ai.options.stream(word + ' ');
	}

	done(null, { content: text, roles: ai.payload.messages.map(n => n.role), tools: ai.payload.tools.length, think: !!ai.payload.think });
});

controllers/ai.js

exports.install = function() {
	ROUTE('POST /ask/', ask);
	ROUTE('GET /ask-config/', askconfig);
	ROUTE('GET /ask-stream/', askstream);
	ROUTE('GET /ask-missing/', missing);
	ROUTE('GET /parse/', parse);
};

async function ask($) {
	const response = await AIMODEL('echo').system('You are brief.').user($.body.question).tool({ name: 'weather' }).think().promise($);
	$.json(response);
}

function askconfig($) {
	AIMODEL('echo').user('hello').configure({ prefix: 'Custom' }).callback($.callback());
}

function askstream($) {
	const parts = [];
	AIMODEL('echo').user('one two three').stream(part => parts.push(part)).callback(function(err, response) {
		$.json({ parts: parts, content: response.content });
	});
}

function missing($) {
	AIMODEL('nobody').user('hi').callback($.callback());
}

function parse($) {
	const parser = AIPARSER('openai');
	const events = [];
	parser.on('content', e => events.push(e.delta));

	// the second piece starts in the middle of a line
	parser.write('data: {"choices":[{"delta":{"content":"Hel"}}]}\n\ndata: {"choices":[{"delta":{"con');
	parser.write('tent":"lo"}}]}\n\ndata: [DONE]\n');
	const output = parser.end();

	$.json({ output: output, events: events });
}