Now in private beta

Your business is now a text away

A turnkey, production-ready agent layer between your servers and your customers' thumbs.

iMessage
RCS
SMS
WhatsApp
2:27
(617) 555-1234
iMessage

What it is

regular

/ˈreɡjələr/ noun

  1. 1.

    a customer who comes back — someone the staff knows by name and never has to re-explain themselves.

  2. 2.

    Regulars AI — the agent layer between your servers and your customers' phones. We give you a phone number they text from iMessage, RCS, SMS, or WhatsApp.

  3. 3.

    an AI agent talks to your existing API to answer, remembers every conversation, and replies in your brand's voice — fully white-label.

You handle the business logic. We handle the conversation.

Messaging channels

iMessage, RCS, SMS, WhatsApp

You pick an area code, we provision the number. Messages flow over iMessage, RCS, SMS, or WhatsApp depending on the customer's device and your plan. We handle carrier registration, compliance, and deliverability so your number stays live and your messages land. You never have to touch carrier infrastructure.

Identity & auth

The phone number is the auth

The messaging channel is the auth. A customer's phone number is one of the most stable identifiers they have. Every request to your API includes it alongside the channel, user ID, and a signature your server can verify. Signed per RFC 9421 with HMAC-SHA256.

Agent orchestration

No AI stack for your team to maintain

Incoming messages are queued, deduplicated, and processed in order. Conversation state is retrieved, context is hydrated and cached, guardrails enforced, intent parsed, tools called, and a response delivered. The full orchestration happens in seconds with no queue for your team to monitor.

Conversational state

Every conversation picks up where it left off

Message history and conversational context are stored and managed on our side. Customers text the same number, land in the same thread, and talk to an agent that remembers.

Caching layer

Repeat queries resolve without hitting your servers

Responses from your API are cached and intelligently reused across conversations. Customers get lower latency replies, your infrastructure gets fewer requests.

Guardrails

Filter what goes in and what comes out

Guardrails run on both user inputs and agent responses, catching abuse, injection attempts, PII, and off-topic requests before they reach your API or the customer. Pattern matching, keyword filters, AI-based evaluation, and PII redaction are all configurable per agent. Input guardrails run in parallel with context hydration so they don't add latency.

Events

Not every conversation starts with the customer

Events let your API initiate a message when something happens on your end: an item restocks, an appointment is tomorrow, an order ships. Your API sends the signal, the agent crafts and delivers the message.

API-controlled messaging

When the message needs to be exact, your API sends it directly

Your API can bypass the agent entirely. Throw a structured error with a message and we deliver it straight to the customer. No agent interpretation, no rewriting. Onboarding flows, payment links, account setup.

Predictable billing

You pay per message, not per token

No estimating context windows, no surprise bills when conversations run long. One message in, one message out, one price. Usage scales linearly and predictably.

How it works

End-to-end conversations across any flow your business runs. These are just a few examples.

End User
2:27
(617) 555-1234
iMessage
Regulars AI
regulars ai Agent Activity
  1. Searching knowledge base
    Reset and charging article retrieved
  2. Searching knowledge base
    Battery fault article retrieved
  3. Looking up warranty
    Proof of purchase required
  4. Validating proof of purchase
    Purchase confirmed within warranty
  5. Creating warranty claim
    Replacement queued for shipment
  6. Notifying the customer
    Shipment tracking sent
Server
Incoming requests sonicbrush.demo
Outgoing requests api.regularsai.com
Inspector

End User
Regulars AI
Server

From signup to first text in a weekend

Easier than onboarding a human employee. No infrastructure to stand up, no models to host, no SDK to learn. If your API can serve a mobile app, it can serve Regulars.

Claim your number

We provision a real phone number in the area code you pick. Customers text it from iMessage, RCS, SMS, or WhatsApp.

Connect resources

Point the agent at HTTP endpoints that return live state. We fetch, cache, and template them into every response.

Write the instructions

Tell the agent how to act: tone, scope, escalation rules, edge cases. Drop in example flows. Reference resources inline for live context.

Add tools

Expose actions as HTTP endpoints or an MCP server. Bookings, refunds, KB lookups, status changes. Anything your API can do, the agent can do on request.

Set guardrails

Filter user inputs and agent outputs for abuse, injection, PII, and off-topic requests. Block or redact before anything reaches its destination.

Fine-tune

Optional

If prompting hits its limit, train on your transcripts. Pin the voice. Make the edge cases stick.

RFC 9421

Every request signed per RFC 9421 with HMAC-SHA256 — an open IETF standard with libraries in every major language.

A better customer experience at a fraction of the cost

For less than the cost of a single employee's shift, every customer gets the regular treatment, over the messaging channels they prefer.

Free

$0 / month

For developers and testing

  • 100 messages capped

  • WhatsApp

  • Pattern + keyword guardrails

  • Low request priority

Join waitlist

WhatsApp

International
TBA

WhatsApp at global scale

  • 5,000 messages

  • WhatsApp

  • 3 inference-based guardrails

Join waitlist

iMessage & RCS

US only
TBA

Native messaging channels

  • 5,000 messages

  • iMessage + RCS with SMS fallback

  • 3 inference-based guardrails

Join waitlist

Enterprise

Let's talk

We handle everything

  • As many messages as you need contact us for volume pricing

  • All channels iMessage, RCS, SMS, WhatsApp

  • Unlimited guardrails tuned to your policies

  • Managed onboarding we set it up with you

  • Implementation & training consulting

Talk to founders

Messaging

Channels
Free WhatsApp
WhatsApp WhatsApp
iMessage & RCS iMessage, RCS, SMS fallback
Enterprise All channels
Availability
Free International
WhatsApp International
iMessage & RCS US only
Enterprise International
Phone number
Free Bring your own
WhatsApp Bring your own
iMessage & RCS Provided
Enterprise Any
Request priority
Free Low
WhatsApp Standard
iMessage & RCS Standard
Enterprise Priority
Outbound event window
Free 24 hours
WhatsApp 24 hours
iMessage & RCS Unlimited
Enterprise Unlimited

Agent

Conversation history retention
Free 30 days
WhatsApp 1 year
iMessage & RCS 1 year
Enterprise Indefinite
Resources
Free HTTP endpoints
WhatsApp HTTP endpoints
iMessage & RCS HTTP endpoints
Enterprise HTTP endpoints
Tools
Free HTTP endpoints + MCP
WhatsApp HTTP endpoints + MCP
iMessage & RCS HTTP endpoints + MCP
Enterprise HTTP endpoints + MCP
Caching
Free
WhatsApp
iMessage & RCS
Enterprise
Inference-based guardrails
Free
WhatsApp 3
iMessage & RCS 3
Enterprise Unlimited
Pattern + keyword guardrails
Free
WhatsApp
iMessage & RCS
Enterprise
Fine-tuning on transcripts
Free
WhatsApp
iMessage & RCS
Enterprise

Platform

Observability
Free
WhatsApp
iMessage & RCS
Enterprise
Audit logs
Free
WhatsApp
iMessage & RCS
Enterprise
Management API
Free
WhatsApp
iMessage & RCS
Enterprise
Uptime SLA
Free
WhatsApp 99.5%
iMessage & RCS 99.5%
Enterprise 99.9%

Services

Onboarding
Free Self-serve
WhatsApp Self-serve
iMessage & RCS Self-serve
Enterprise Managed
Implementation consulting
Free
WhatsApp
iMessage & RCS
Enterprise
Training consultation
Free
WhatsApp
iMessage & RCS
Enterprise
Custom integrations
Free
WhatsApp
iMessage & RCS
Enterprise
Quarterly business reviews
Free
WhatsApp
iMessage & RCS
Enterprise
Solutions engineer
Free
WhatsApp Shared
iMessage & RCS Shared
Enterprise Dedicated

Support

Channel
Free Community
WhatsApp Email
iMessage & RCS Email
Enterprise Email + phone
Response time
Free Best effort
WhatsApp 1 business day
iMessage & RCS 1 business day
Enterprise Same business day