Integration guide · Coding agent

OpenCode on EU-hosted open models

Declare Frontière AI as a custom OpenAI-compatible provider in opencode.json and code with EU-hosted open models from the terminal. A provider entry in opencode.json (project root or ~/.config/opencode/) using the @ai-sdk/openai-compatible package.

Settings from the official documentation, checked on 12 October 2026. Not run end to end by us.

API format

OpenAI-compatible

Base URL

https://getfrontiereai.eu/api/v1

Where it goes

A provider entry in opencode.json (project root or ~/.config/opencode/) using the @ai-sdk/openai-compatible package.

Your prompts

Straight from your machine to us

Setup

{
  "$schema": "https://opencode.ai/config.json",
  "share": "disabled",
  "provider": {
    "frontiere": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "Frontière AI",
      "options": {
        "baseURL": "https://getfrontiereai.eu/api/v1",
        "apiKey": "{env:FRONTIERE_API_KEY}"
      },
      "models": {
        "glm-5.2": { "name": "GLM 5.2", "limit": { "context": 256000, "output": 32000 } },
        "qwen3.6-35b": { "name": "Qwen 3.6 35B", "limit": { "context": 262144, "output": 16384 } }
      }
    }
  },
  "model": "frontiere/glm-5.2",
  "small_model": "frontiere/qwen3.6-35b"
}

export FRONTIERE_API_KEY=sk-front-...
opencode

Which model to pick

24 live models have tool calling measured by a real call through the gateway. Models labeled EU sovereign run at European providers; fast-access models are served through US-controlled infrastructure. Prices are per 100,000 tokens, margin and VAT included.

Good to know

• OpenCode's editing and command workflow runs on tool calls: declare only models with measured tool calling.
• Reasoning models can be declared with "reasoning": true and "interleaved": { "field": "reasoning_content" }.
• Use @ai-sdk/openai-compatible, not @ai-sdk/openai: the latter is for providers that expose the Responses API, which Frontière AI does not.

Where your prompts go

Requests go from the local OpenCode process to the base URL. One documented exception: /share uploads the conversation to OpenCode's servers and publishes a link; the snippet sets "share": "disabled".

On our side, a model labeled EU sovereign runs at a European provider, and the gateway itself runs in Paris on Vercel, a US company — our privacy page says so. Billing keeps the model, the token counts and the amount, never the prompt or the reply.

Sovereignty →Privacy →

Sources

Official documentation, checked on 12 October 2026:

• OpenCode — Providers
• OpenCode — Config

FAQ

Other guides

• Claude CodeCoding agent
• ClineCoding agent
• Kilo CodeCoding agent
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