Add a provider to opencode.json.
{
"provider": {
"everyais": {
"npm": "@ai-sdk/openai-compatible",
"options": {
"baseURL": "https://api.everyais.com/v1",
"apiKey": "{env:EVERYAIS_API_KEY}"
},
"models": {
"everyais/claude-opus-5": { "name": "Claude Opus 5" },
"everyais/gemini-3-5-flash": { "name": "Gemini 3.5 Flash" }
}
}
}
}Look up the IDs to put in models with GET /v1/models or in the model catalog.