SaaS & Tech · Built for engineers

The phone stack SaaS teams graduate to.

Q: Is there a developer API?

Yes. REST API and webhooks included on Basic and every tier above.

Q: HubSpot integration?

Native two-way sync on Basic and above.

Personal AI on every seat. APIs for engineers. HubSpot and Zoho sync native.

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14-day free trial.

API + WEBHOOKS
PERSONAL AI
SOC 2
32 LANGUAGES

~/relay-systems · mcm-sdk live

./dial.ts

import { mcm } from '@mcm/sdk';

await mcm.calls.create({

to: '+1-415-555-0244',

from: '+1-628-555-1010',

recordingChannels: 'dual',

});

POST /calls

dialing

webhook · call.created200 OK · 142ms

{

"event": "call.created",

"id": "call_2k8s_47138",

"to": "+1-415-555-0244",

"status": "queued",

"crm": { "hubspot_id": "47138" }

}

auto-logged auto-logged notifiedp99 < 180ms

SaaS teams graduate from WhatsApp and Google Voice somewhere between seed and Series B. The graduation is painful. MCM is built for that moment.

What SaaS teams need

Six layers. One platform.

SaaS teams need plumbing, not a phone product. Every layer is documented, typed, and addressable from your codebase.

Per-seat Personal AI · auto-log to HubSpot or Zoho
Team chat built into the phone system · Slack-native
Conversation intelligence on every demo call
Softphones across desktop, mobile, web
SOC 2 Type II for security-conscious customers

Typed SDKs

TypeScript, Python, Go, Ruby. Maintained, not generated and forgotten.

TSPyGoRb

REST API

Documented, idempotent, versioned. OpenAPI 3.1 exported.

OpenAPI 3.1rate-limit

Webhooks · every event

call.created · call.completed · sms.received · transcript.ready

typedp99 180ms

Conversation intelligence

Sentiment, talk-ratio, objection patterns across every demo.

sentimenttalk-ratio

Personal AI · per seat

Auto-log to HubSpot or Zoho. Demo summaries in your inbox.

per-seatHubSpotZoho

Phone events + recordings

Object storage with retention controls.

S3-compat7-yr retain

APIs for the product team

Plumbing your engineers want to use.

If your product talks to customers via phone or SMS — for support, 2FA, or async voice notes — MCM’s typed SDKs handle the wire.

Standards

OpenAPI 3.1OAuth 2Idempotency-KeyWebhooks v2

POST /v1/calls201 Created

request · ts

await mcm.calls.create({
  to: '+1-415-555-0244',
  from: '+1-628-555-1010',
  recordingChannels: 'dual',
});

response · json

{
  "id": "call_2k8s_47138",
  "status": "queued",
  "to": "+1-415-555-0244"
}

SOC 2 Type II 99.99% uptimedocs.mycountrymobile.com

Testimonials

What clients say after 90 days.

Real teams, real numbers — from sales floors, CX desks, and support queues.

“The dashboard rewired how we run the floor. I spot a bottleneck mid-shift and coach the agent before it becomes a problem.”

Rachel Monroe

CX Manager · Finley Home Services

Finley

“HubSpot sync is the reason we stayed. Every call, note, and recording shows up on the contact — without anyone remembering to log it.”

Daniel Park

Head of Sales · NorthPeak Insurance

NorthPeak

“The IVR builder took me an afternoon, not a project plan. Cut our average handle time 38% in 60 days.”

Miguel Castro

Ops Director · Cedarwood Legal

Cedarwood

“AI covers every overflow call in Hindi and English. We stopped losing weekend leads overnight.”

Priya Nair

Support Lead · Vela Retail

Vela

“Porting 40 numbers across three countries was the part I dreaded. It was done in a week, free.”

Aisha Okafor

COO · Kairo Health

Kairo

“Transcripts + sentiment scoring inside HubSpot deals turned every discovery call into searchable gold.”