MatthewTaormina AI Model Routers Skill: OpenRouter & EuroRouter
This skill covers how to integrate and configure unified multi-model AI gateways—OpenRouter (for global model aggregation, intelligent routing, and fallback chains) and EuroRouter / EUrouter (for sovereign EU data residency and strict GDPR compliance).
1. Core Architecture & SDK Choice
Neither OpenRouter nor EuroRouter requires a proprietary SDK. Both implement standard OpenAI API specification compatibility. You can use the official openai package across Node.js/TypeScript and Python simply by altering the baseURL and API key.
# Node.js / TypeScript
npm install openai
# Python
pip install openai
2. OpenRouter Integration Guide
- Base URL:
https://openrouter.ai/api/v1 - API Key Env:
OPENROUTER_API_KEY
2.1 TypeScript Client Setup
import OpenAI from 'openai';
const openRouter = new OpenAI({
apiKey: process.env.OPENROUTER_API_KEY,
baseURL: 'https://openrouter.ai/api/v1',
defaultHeaders: {
'HTTP-Referer': 'https://agent-engine.local', // Optional: for analytics ranking
'X-Title': 'Agent Engine', // Optional: title for leaderboards
},
});
2.2 Intelligent Dynamic Auto-Routing (openrouter/auto)
Let OpenRouter inspect your prompt and route to the most cost-efficient, high-performance model:
const response = await openRouter.chat.completions.create({
model: 'openrouter/auto',
messages: [{ role: 'user', content: 'Design a high-throughput cache invalidation strategy.' }],
});
console.log(response.choices[0].message.content);
2.3 Cascading Model Fallbacks
Specify a priority chain. If the primary model experiences downtime or rate limits, OpenRouter fails over seamlessly to the backup models:
const response = await openRouter.chat.completions.create({
model: 'anthropic/claude-sonnet-5',
// @ts-ignore: OpenRouter extension parameter
models: [
'anthropic/claude-sonnet-5',
'openai/gpt-5.6-terra',
'google/gemini-3.8-flash',
],
messages: [{ role: 'user', content: 'Generate unit tests for auth middleware.' }],
});
3. EuroRouter / EUrouter Integration Guide
- Base URL:
https://api.eurouter.ai/v1 - API Key Env:
EUROUTER_API_KEY - Target Audience: Organizations requiring strict EU Data Residency, Zero Data Retention (ZDR), and EU AI Act compliance.
3.1 TypeScript Client Setup
import OpenAI from 'openai';
const euRouter = new OpenAI({
apiKey: process.env.EUROUTER_API_KEY,
baseURL: 'https://api.eurouter.ai/v1',
});
// Drop-in completion guaranteed to process within EU data boundaries
const completion = await euRouter.chat.completions.create({
model: 'mistralai/mistral-large-latest',
messages: [
{ role: 'system', content: 'You are an EU-compliant enterprise data processor.' },
{ role: 'user', content: 'Analyze GDPR data minimization requirements.' },
],
});
console.log(completion.choices[0].message.content);
3.2 Python Implementation
import os
from openai import OpenAI
# OpenRouter client
or_client = OpenAI(
api_key=os.environ.get("OPENROUTER_API_KEY"),
base_url="https://openrouter.ai/api/v1",
)
# EuroRouter client
eu_client = OpenAI(
api_key=os.environ.get("EUROUTER_API_KEY"),
base_url="https://api.eurouter.ai/v1",
)