msg = client.messages.send(
    agent_id=agent.id,
    to_number="+12125557890",
    body="Your code is 482913. Expires in 5 minutes.",
    media_url="https://example.com/receipt.png",  # optional (MMS)
)

const msg = await client.messages.send({
    agentId: agent.id,
    toNumber: "+12125557890",
    body: "Your code is 482913. Expires in 5 minutes.",
    mediaUrl: "https://example.com/receipt.png",
});

client.messages.list(agent_id=agent.id, limit=50)
client.messages.list_conversations(agent_id=agent.id)

await client.messages.list({ agentId: agent.id, limit: 50 });
await client.messages.listConversations({ agentId: agent.id });