Developer Platform

Build on Unbound.
Ship faster.

REST API, WebSocket subscriptions, SQL-like queries, and a full SDK. Everything you need to build on top of, or deeply integrate with, Unbound.

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The API

Everything is
an API.

Every feature in Unbound is accessible via REST. Auth with a Bearer token. Base URL is namespace-scoped.

25+ Services

Voice, AI, Workflows, Messaging, Task Router, Knowledge Base, and more.

REST + WS REST + WebSocket

HTTP for CRUD, WebSocket for real-time event streams.

/ns Namespace-Scoped

Your data is fully isolated: https://yourco.api.region.app1svc.com

Bearer Bearer Auth

Simple token auth on every request. API keys managed via the dashboard.

UOQL

SQL for your
contact center data.

UOQL (Unbound Object Query Language) is a full SQL-like query language for your CRM and contact center data. Run it from workflows, the API, or the CLI.

POST /object/query/v2
POST /object/query/v2
Content-Type: application/json
Authorization: Bearer <token>

{
  "query": "SELECT firstName, lastName, phone, lastCallDate FROM people WHERE status = 'active' AND lastCallDate > '2026-01-01' ORDER BY lastCallDate DESC LIMIT 50"
}
SELECT with field projection WHERE with AND/OR conditions ORDER BY with direction LIMIT and OFFSET pagination GROUP BY with aggregates (COUNT, SUM, AVG, MIN, MAX) Window functions IN and LIKE operators JOIN across related objects

Query any object: contacts, CDRs, tasks, sessions, knowledge base articles, and your own custom objects.

WebSocket Subscriptions

Real-time events
on everything you care about.

Subscribe to any object type and receive live events the moment data changes. Built on Socket.IO v4 with namespace isolation.

websocket.js
// Connect and subscribe to call events
const socket = io("https://socket.region.app1svc.com", {
  auth: { namespace: "yourco", tokenType: "cookie" }
});

socket.on("objects.event", (event) => {
  // Fires on every CDR create/update in real time
  console.log(event.objectName, event.action, event.data);
});
●

Live call dashboards

CDR events fire the instant a call starts, updates, or ends.

●

Agent status boards

Worker availability changes broadcast in real time.

●

CRM sync

Object changes propagate immediately to connected integrations.

Official SDK

First-class SDK.
Zero boilerplate.

The @unboundcx/sdk is the official JavaScript/TypeScript client. Built and maintained by the Unbound team.

Install
npm install @unboundcx/sdk
sdk-example.ts
import UnboundSDK from "@unboundcx/sdk";

const unbound = new UnboundSDK({
  namespace: "yourco",
  token: process.env.UNBOUND_API_TOKEN,
  region: "us-east-1"
});

// Query contacts
const contacts = await unbound.objects.query("people", {
  conditions: [{ field: "status", operator: "equals", value: "active" }],
  limit: 100
});

// Start a workflow session
const session = await unbound.workflows.createSession(workflowVersionId, {
  engagementSessionId: engId,
  sipCallId: callId
});

// Send SMS
await unbound.messaging.sendSms({
  to: "+15551234567",
  from: "+15559876543",
  body: "Your appointment is confirmed for tomorrow at 2pm."
});
Objects / UOQL Workflows Voice Messaging (SMS + Email) Task Router Knowledge Base AI (Chat, TTS, STT) WebSocket Subscriptions
Unbound CLI

Command line.
Full power.

terminal
# Install
npm install -g @unboundcx/cli
unbound login

# List workflows
unbound workflows list

# Inspect a workflow
unbound workflows inspect <id>

# Query objects with UOQL
unbound query "SELECT * FROM people WHERE phone LIKE '555%'"

# List queues
unbound queues list

# Check agent status
unbound agents list --queue support

Every API capability accessible from the terminal.

Integrations

Connect to
everything else.

Webhooks

Receive inbound events from Stripe, Telnyx, Google, AWS SNS, and any HTTP source.

OAuth 2.0

Connect external providers with PKCE, encrypted state, and automatic token refresh.

Google Calendar

Sync calendar events and video room scheduling with webhook notifications.

Telnyx

Native telephony integration for voice, SMS/MMS, and fax via Telnyx.

AWS SES

Transactional and campaign email delivery through Amazon SES.

AWS Bedrock

AI reranking and model access for knowledge base search and generative features.

Fax

Send and receive faxes via Telnyx integration. Same API, different channel.

10DLC & Toll-Free

Full US SMS campaign registration, brand verification, and compliance built in.

Custom Objects

Define your own data schemas, query them with UOQL, and use them in workflows.

API-first,
always.

Every Unbound feature ships with a documented REST endpoint on day one.

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