curl -X PATCH https://api.thinnest.ai/v2/agents/{public_id} \
  -H "Authorization: Bearer $THINNESTAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "Updated Agent Name",
  "model": "gpt-4o-mini",
  "instructions": "You are an updated assistant with new behavior."
}'

{
  "id": "ag_c47e7c97_b2f2",
  "name": "Updated Agent Name",
  "createdAt": "2026-03-07T10:00:00Z",
  "updatedAt": "2026-03-07T12:30:00Z",
  "model": {
    "provider": "openai",
    "model": "gpt-4o-mini",
    "temperature": null,
    "maxTokens": null,
    "instructions": "You are an updated assistant with new behavior."
  },
  "transcriber": null,
  "voice": null,
  "tools": [],
  "knowledgeBase": null,
  "voiceEnabled": false,
  "agentType": "simple"
}