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Claude Duet · Anthropic

Let Claude Duet text you: SMS for Anthropic's proactive agent

Claude Duet uses the connectors on your Claude account. Add AI Text-a-roo as a custom connector, sign in with your phone number, and Duet can text you its brief, urgent alerts and questions, then wait for your reply. You don't need an app or a new inbox.

Method: Custom connector (remote MCP + OAuth) · Updated October 24, 2026

Set up Claude Duet

  1. 1

    In Claude, open Customize → Connectors → Add custom connector.

  2. 2

    Paste the AI Text-a-roo MCP URL and choose Add.

    Copy
    https://api.aitextaroo.com/mcp
  3. 3

    Choose Connect, enter your phone number, and type the 6-digit code we text you. Then allow access. We'll text you that the app is connected.

  4. 4

    Optional: upload the AI Text-a-roo skill (Customize → Skills) so Duet knows when a text is worth sending.

    Copy
    https://aitextaroo.com/skills/aitextaroo.zip
  5. 5

    Ask Duet for something, like “Text me a short brief every weekday at 7am.”

Things to ask Claude Duet

  • “Text me a short brief every weekday at 7am: first meetings, weather, anything urgent.”
  • “If anything urgent comes in while I'm out, text me a one-line summary.”
  • “Before you send or buy anything for me, text me and ask for my PIN.”

Good to know

  • Claude Duet is a research preview for Pro and Max subscribers in the US. Anthropic's help center says Duet uses the connectors on your Claude account; it doesn't specifically list custom connectors, so check that AI Text-a-roo appears in Duet after you add it.
  • Duet asks before it acts on your behalf, so expect an approval prompt the first time it sends a text.
  • On Team and Enterprise plans, an Owner adds custom connectors for the organization.

Claude Duet FAQ

Can Claude Duet send text messages?

Not on its own. Anthropic notes that Duet doesn't send text messages to other people. With AI Text-a-roo connected as a custom connector, Duet can text you (and, on Pro, your contacts) through the AI Text-a-roo MCP server.

Can I text Claude Duet and get an answer?

Partly. Duet can text you a question and wait a few minutes for your reply. Texts you send without being asked won't reach Duet, because it has no way to receive messages between its scheduled check-ins. For a fully two-way SMS agent, use the bridge with Claude Code.

Try these with Claude Duet

Proactive agentsFree

Your morning brief, by text

Always-on agents can send their daily brief straight to your messages, so you're caught up before you're out of bed.

  1. Today 7:00 AM

  2. Your AI:

    ☀️ Morning! 3 meetings today. First: 9:30 with Dana (Q4 plan). Rain after 4 PM. Your REI order arrives by 8.

  3. You:

    Push Dana to 10

Proactive agentsFree

Only the alerts that matter

Your agent watches your inbox, calendar and accounts, and texts you only when something actually needs you.

  1. Your AI:

    Heads up: your 6:10 PM flight to Denver is delayed 2 hours. Want me to move your 8:00 dinner reservation to 9:30?

  2. You:

    Yes please

  3. Your AI:

    Done ✓ Table for 2 at 9:30. The confirmation is in your email.

Proactive agentsFree

Approve before it acts

Let your agent do the legwork, then sign off from your lock screen. Add a security PIN for anything sensitive.

  1. Your AI:

    Found a refundable fare $180 cheaper for your Denver trip. Rebook? Reply YES + your PIN.

  2. You:

    YES 4821

  3. 🔒 PIN verified

Your AI deserves a phone number.

Set up in two minutes. 10 free texts every day. No app, no credit card.

Get started free →Read the setup guide