Overview Twilio supports multiple authentication methods. For most developers: use Auth Token for local prototyping, then move to API Keys in production. | Method | Use for | Security | |--------|---------|----------| | Account SID + Auth Token | Local prototyping, initial testing | Full account access — avoid in production | | Account SID + API Key (Standard) + Secret | All production code | Recommended — revocable, no access to /Accounts or /Keys | | Account SID + API Key (Restricted) + Secret | Fine-grained production access | Best — limit to specific resources only | | Account SID + API K…