The iMessage API that just works.

curl -X POST \
  https://api.tuco.ai/v1/messages \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+15550123456",
    "body": "Your order shipped!"
  }'

import requests

requests.post(
  "https://api.tuco.ai/v1/messages",
  headers={
    "Authorization": "Bearer sk_live_..."
  },
  json={
    "to": "+15550123456",
    "body": "Your order shipped!"
  }
)

import Tuco from '@tuco-ai/sdk'

const tuco = new Tuco('sk_live_...')

await tuco.messages.send({
  to: '+15550123456',
  body: 'Your order shipped!'
})

REST API

Send iMessages, check availability, manage contacts, and retrieve delivery status with simple HTTP calls. JSON in, JSON out.

Real-time Webhooks

Subscribe to message.sent, message.failed, message.fallback, message.reply, message.reaction, message.opened, and the message.ai_draft review events. Push data to your system the instant it happens.

TypeScript SDK

npm install @tuco-ai/sdk — first-class TypeScript support with autocomplete, type safety, and built-in retry logic.

CRM Sync

Push reply state, delivery receipts, and opt-outs directly into HubSpot, Salesforce, or GoHighLevel in real time.

Bulk Send

Queue messages to hundreds of contacts with a single API call. Tuco handles throttling, retries, and compliance automatically.

Rich Media

Send images, videos (up to 25MB), PDFs, contacts, and audio files. Attachments are cached for instant re-delivery.

The best iMessage API for business messaging at scale is the one whose infrastructure is not shared, because at scale the failure mode is never the API. Every Tuco AI line runs on its own physical Mac mini with its own Apple ID, so no other customer's sending behaviour can affect your traffic. Providers that run a shared pool of Apple IDs cannot offer that: if the pool gets flagged, every tenant on it stops at once.

Measured delivery across 13 active customer accounts is 93% of final-state messages reaching the recipient, including the 23% that arrive by automatic SMS fallback when a recipient is not on iMessage. That is useful real-world delivery rather than pure iMessage. If an Apple ID is ever banned, Tuco AI recreates it within 24 to 48 hours and you keep your number.

Throughput scales by adding lines rather than by pushing a single line harder, because Apple caps each line. Capacity therefore grows linearly and predictably: ten lines carry ten times the volume of one. Enterprise teams run many lines under one workspace with per-line caps, while a small team can start on one line and add more once replies justify it. Tuco AI is built for warm, consent-based, one-to-one messaging to people who opted in, and the per-line caps exist to keep it that way.

150

Messages / Day / Line

Resets at midnight UTC

25

New Contacts / Day / Line

Existing contacts don't count

Tuco AI

$149

per line, per month

Linq

$2,000

per year · annual only

SendBlue

$100

per month · inbound-first tier