@aparte/provider-openai-compat

One adapter for every OpenAI-compatible /chat/completions endpoint — OpenAI, Mistral, OpenRouter, Z.ai, Groq, Together, LM Studio, Ollama (/v1) and friends all speak the same wire format, so they share a single, zero-dependency format adapter. Vendors differ only by data (base URL, auth header, branding), passed as config or picked from presets.

npm install @aparte/provider-openai-compat @aparte/core

@aparte/core is the only peer dependency; this adapter itself has none.

import { createOpenAICompatProvider, presets } from '@aparte/provider-openai-compat';
import { aparteGlobalConfig } from '@aparte/core';

aparteGlobalConfig.registerAIProvider(createOpenAICompatProvider(presets.OPENROUTER));
// …or any compat endpoint, no preset needed:
aparteGlobalConfig.registerAIProvider(createOpenAICompatProvider({ id: 'groq', baseURL: 'https://api.groq.com/openai/v1' }));

@aparte/core is a peer dependency. For vendors outside the OpenAI-compat family (Anthropic, Gemini, …) use @aparte/provider-ai-sdk instead.

Works on the server too. Nothing here touches the DOM, and core resolves its DOM-free entry under Node's export condition — so you can reuse this adapter from a backend, an Electron main process or an SSR pass instead of re-writing one. Pair buildRequest / parseStream with your own fetch when you already own the request (your AbortSignal, your headers), or hand it to createAparteChatHandler from core.

Part of the aparté monorepo. ESM-only. See the Providers guide in the docs for the full usage.