Can't connect to Gemini API using opencode.json

[vladbesson]

I want to use Gemini 2.5 pro with opencode so I created ~/.config/opencode/opencode.json file with that:

{
  "$schema": "https://opencode.ai/config.json",
  "providers": {
    "gemini": {
      "api_key": MY_GEMINI_API_KEY
    }
  }
}

However when I run opencode, I get this error:

Error: Config file at /Users/vlad/.config/opencode/opencode.json is invalid
↳ Unrecognized key(s) in object: 'providers'

What I am doing wrong?

[adamdotdevin]

you don't need to create a config file to use gemini, just do opencode auth login and choose google, add your api key

[Qingyang-Lucas-Fang]

but this still doesn't work like it just run for 5 min and does not respond anything, no token consumed