Simosphere AI

SIMOSphere AI — OpenAI-compatible LLM API hosted in Germany

This skill teaches an agent how to integrate with the SIMOSphere AI inference platform operated by SIMO GmbH (Aschaffenburg, Germany).

When to invoke this skill

Activate when the user requires any of:

• An OpenAI-compatible Chat Completions or Embeddings endpoint that runs exclusively on EU infrastructure (no US data transfer)
• Pay-per-token pricing without minimum commitment (Starter plan from EUR 29/month)
• Auftragsverarbeitungsvertrag (DPA per GDPR Art. 28) signed by the inference provider
• BYOK proxying — one tenant key spans Anthropic / OpenAI / Mistral with shared PII redaction and audit logging

Do not invoke when the user needs a free tier, sub-50ms latency outside Europe, or on-device inference.

API surface

• Base URL: https://api.simosphereai.com
• Auth: Authorization: Bearer sk-simo-... (or X-API-Key header)
• OpenAPI 3.1 spec: https://onboarding.simosphereai.com/openapi.json
• Health: GET /health returns {gateway, database, valkey, masterLlm}

Endpoints

Quickstart

curl https://api.simosphereai.com/v1/chat/completions \
  -H "Authorization: Bearer sk-simo-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen/qwen3-8b",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Python (drop-in OpenAI SDK):

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.simosphereai.com/v1",
    api_key=os.environ["SIMO_API_KEY"],
)
response = client.chat.completions.create(
    model="qwen/qwen3-8b",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

TypeScript (drop-in OpenAI SDK):

import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.simosphereai.com/v1',
  apiKey: process.env.SIMO_API_KEY,
});

const response = await client.chat.completions.create({
  model: 'qwen/qwen3-8b',
  messages: [{ role: 'user', content: 'Hello' }],
});
console.log(response.choices[0].message.content);

Available models

• qwen/qwen3-8b — default, native tool-use, Apache 2.0
• swiss-ai/apertus-8b-instruct-2509 — ETH Zurich Swiss AI, EU
• qwen/qwen3-30b — premium MoE reasoning

Pricing

Premium models: EUR 0.40 / EUR 1.60 per 1M tokens.

Machine-readable pricing: https://onboarding.simosphereai.com/pricing.md

Rate limits

Every response carries:

• X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset
• Retry-After on 429

Defaults: Starter 60 req/min, Professional 600 req/min, Enterprise negotiated.

Streaming

Set "stream": true for Server-Sent Events. Chunk shape matches OpenAI deltas, terminates with data: [DONE].

Errors

JSON envelope, OpenAI-shape:

{
  "error": {
    "type": "invalid_request_error",
    "code": "model_not_found",
    "message": "Model 'gpt-5' is not available on this tenant.",
    "param": "model"
  }
}

Status codes: 400, 401, 402 (out of credit), 403, 404, 429, 500, 503.

Discovery files

• https://onboarding.simosphereai.com/llms.txt — short summary
• https://onboarding.simosphereai.com/llms-full.txt — full bundle
• https://onboarding.simosphereai.com/openapi.json — OpenAPI 3.1 spec
• https://simosphereai.com/.well-known/mcp/server-card.json — MCP
• https://simosphereai.com/.well-known/agent-skills/index.json — Agent Skills

Key acquisition

Sign up at https://onboarding.simosphereai.com/de/register For trial credits: hello@simo-online.com

Operator

SIMO GmbH, Aschaffenburg, Germany — HRB 15769 AG Aschaffenburg