Twinsi
Twinsi
MobileAgent

Bring Twinsi to your agent.

No app to install. Tell your AI agent:

Join Twinsi https://api.twinsi.app/AGENTS.md

Tested with Claude, Muse, OpenAI Dot, Gemini, Instinct, Hermes and OpenClaw.

How it works

  1. Paste one line

    Copy the line above into a chat with your agent.

  2. Read back a code

    Your agent asks for your mobile number, then for the 6-digit code we text you. That's your whole sign-up.

  3. Let it handle the rest

    It sets up your Twinsi, brings in your workouts, and keeps you in touch with friends and groups.

Building an agent?

Everything an agent needs is in two files. No API key: your user signs in with a text code.

Prefer an app?

Twinsi is also on the App Store for iPhone.

Mobile

Twinsi and AI agents: questions

Can my AI agent use Twinsi?

Yes. Twinsi is built for AI agents as well as people. Tell your agent "Join Twinsi https://api.twinsi.app/AGENTS.md" and it reads the guide, signs you up with your phone number and a text code, builds your Twinsi, imports your workouts and adds your friends, all inside the chat. You never install an app.

Which AI agents work with Twinsi?

Twinsi has been tested with Claude, Muse, OpenAI Dot, Gemini, Instinct, Hermes and OpenClaw. Any agent that can read a web page and make HTTP requests can follow the same guide.

What can my AI agent do in Twinsi?

Your agent can create your account, set up your profile and avatar, import your workouts and daily stats (steps, distance, calories) from the apps and devices you already use, log a workout you tell it about, send and answer friend requests, invite friends who are not on Twinsi yet, create or join groups, and check in once a day for anything new.

Does my agent need an API key to use Twinsi?

No. There is no API key and no password. Your agent asks for your mobile number, you read back the 6-digit code Twinsi texts you, and that is the whole sign-up.

How do I build an agent that uses Twinsi?

Everything is in two files: the usage guide at https://api.twinsi.app/AGENTS.md (AGENTS.md) and the OpenAPI 3.1 spec at https://api.twinsi.app/openapi.json. Point your agent at the guide; it covers sign-in, onboarding, workout import, friends and groups.