Ringflow
Technology & SaaS

Connect your stack. Skip the middleware.

API-first telephony with REST, webhooks, Zapier, and SDK support — designed for engineering teams that want to integrate calling without building infrastructure.

Get a Free Trial See Pricing
Ringflow SDK · v2.4
Connected
1
import { Ringflow } from "@ringflow/sdk"
2
3
const client = new Ringflow({
4
apiKey: "rf_live_••••••",
5
region: "auto",
6
});
7
8
const call = await client
9
.voice.create({
10
to: "+1-555-0100",
11
ai: { sentiment: true },
12
});
13
// ✓ call · status: ringing
Response200 OK
{
  "id": "rf_0000",
  "status": "ringing",
  "latency_ms": 48,
  "region": "us-east-1"
}

Webhook fired

call.completed · 2s ago

POST · 200 · 48ms

Transcription ready

call.transcribed · 5s ago

POST · 200 · 112ms

48msAvg Latency
12.4KCalls / hr
99.9%Uptime
3 liveRegions
SLA-Backed Uptime·USA Numbers·STIR/SHAKEN·Robocall Mitigation·14-Day Trial
Technology & SaaS

API-first. Stack-friendly. No middleware required.

Tech and SaaS teams choose Ringflow because it connects to the tools they already use without forcing them to build and maintain telephony middleware.

REST API + webhooks

Full API access to calls, recordings, transcripts, and analytics. Webhooks fire on every call event in real time.

Zapier & Make integration

No-code automation with 5,000+ apps. Trigger CRM updates, Slack messages, and tasks without a developer.

Global number inventory

Provision numbers in 90+ countries via API. Build multi-region calling products without carrier relationships.

SCIM & SSO provisioning

Okta, Azure AD, and Google Workspace supported. Users and permissions stay in sync automatically.

Analytics API

Pull CDR, sentiment scores, and recording metadata into your own BI stack — Looker, Tableau, or custom dashboards.

Enterprise security

Annual third-party security audit with a full report available to enterprise prospects. Documentation on request. SOC 2 Type II certified infrastructure.

Built for engineering teams.

04 DX features

Full API documentation

OpenAPI spec, code samples in five languages, and a Postman collection available from day one — including call recording API endpoints.

Sandbox environment

Isolated test environment with free test numbers and simulated call events — no real charges during development.

SDK libraries

Official SDKs for Node.js, Python, Ruby, Go, and PHP with typed models and async support.

Dedicated developer support

Engineering-level support for API questions, custom integration design, and webhook debugging.

Why It Works

Telephony infrastructure your engineering team will actually ship with.

Tech and SaaS teams need APIs that behave predictably, events they can subscribe to, and environments they can test in safely before shipping to production.

API-First Stack

Full REST API access to calls, recordings, transcripts, and analytics — including your contact center data — with typed SDKs for Node.js, Python, Ruby, Go, and PHP and an OpenAPI spec that's accurate on day one.

Real-Time Webhook Events

Subscribe to call.completed, call.transcribed, sentiment.scored, and 20+ other events. Webhooks fire in milliseconds so your CRM updates, Slack alerts, and automations stay in sync — paired with call recording for full auditability.

Full Developer Sandbox

An isolated sandbox environment with free test numbers and simulated call events lets engineers build and validate integrations end-to-end — with zero risk of real charges or production impact.

SLA Monitoring & Uptime

99.9% uptime SLA backed by multi-region infrastructure. Pull latency, CDR, and availability metrics via the Analytics API into your own dashboards for transparent, real-time platform health visibility.

Telephony your engineers actually like.

Clean APIs, real documentation, and the SDKs to build what you need — without fighting the platform.

S

Sam Patel

Head of Engineering, Flux Platform — San Francisco, CA

“The API documentation was actually accurate — that alone put Ringflow above every other vendor we evaluated. Integration took two days, not two weeks.”

Verified Customer
K

Kira Lee

RevOps Engineer, Scale Commerce — Austin, TX

“Zapier workflows fire the moment a call ends. Zero manual handoffs between our sales stack and Ringflow. Our ops team built it in an afternoon with no code.”

Verified Customer
J

Jordan Williams

CTO, Helix AI — New York, NY

“Analytics API lets us pull call data into our internal BI tools. We built a custom churn risk model on top of call sentiment data. Ringflow made it possible.”

Verified Customer
A

Anya Sharma

VP Product, Nextwave SaaS — Chicago, IL

“SCIM provisioning means new engineers have Ringflow access within minutes of onboarding. No IT tickets, no manual setup. It just works.”

Verified Customer

FAQ

Technology & SaaS, answered.

Proactively answering FAQs boosts user confidence and cuts down on support tickets.

Yes. A fully isolated sandbox environment with test numbers and simulated call events is available at no cost for development and testing.
Official SDKs are available for Node.js, Python, Ruby, Go, and PHP. The REST API works with any HTTP client.
Yes. The Voice Embed API lets you add click-to-call and in-app calling to your product with a few lines of JavaScript or native mobile SDK code.
Standard plans support 100 requests per second. Enterprise plans have configurable rate limits based on volume. Contact support for high-throughput use cases.

Built for teams that move fast and scale even faster.

Free trial · API access on every plan · Integrates with your stack

Get a Free Trial See Pricing