OpenCode + xInfer (OpenAI-compatible endpoint)

This guide connects OpenCode directly to xInfer using the built-in OpenAI-compatible /v1/chat_completions API. No proxy required.

OpenCode -> xInfer (OpenAI-compatible)

1) Start xInfer on port 8000

# Rust
xinfer --m Qwen/Qwen3.5-35B-A3B-FP8 --server --d 0

# Different model
xinfer --m Qwen/Qwen3.5-27B-FP8 --d 0 --server

# Python
python3 -m xinfer.server --m Qwen/Qwen3-Coder-Next-FP8 --d 0,1

2) Configure OpenCode

Install opencode (CLI)

curl -fsSL https://opencode.ai/install | bash
# Or install with npm
npm i -g opencode-ai

Export config into ~/.config/opencode/config.json

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "xinfer": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "xInfer Local",
      "options": {
        "baseURL": "http://localhost:8000/v1"
      },
      "models": {
        "qwen3-coder": {
          "name": "Qwen3 Coder"
        }
      }
    }
  },
  "model": "xinfer/qwen3-coder"
}

Install Desktop OpenCode (optional)

visit https://opencode.ai/download

Connect to provider -> custom -> base URL (http://localhost:8000/v1) -> Empty key

3) Run OpenCode

run opencode (CLI)

opencode

Or, run OpenCode desktop (choose configured custom provider)

Trouble shooting

1. Use the chat logger to monitor detailed interactions between OpenCode and xInfer.

# Log into files (in folder ./log)
export XINFER_CHAT_LOGGER=1