What is MCP and do I need to understand it?

MCP (Model Context Protocol) is an open standard that lets AI agents connect to external tools. Think of it as a universal adapter. You don’t need to understand it — just connect Callsy to your AI tool and it works.

Does Callsy work with OpenClaw?

Absolutely. Callsy’s MCP server integrates directly with OpenClaw agents. Add it as a skill and your autonomous agent can create voice personas, initiate calls, and check outcomes — all within the agent loop.

Do I need to be technical to use this?

Not at all. If you can type a sentence, you can use Callsy. Describe your call in plain English.

What does the AI voice sound like?

Natural and conversational — not robotic. You choose from multiple voice profiles and customize tone, pace, and personality to match your brand.

Can the AI handle objections?

Yes. You define the playbook — common objections, discount authority, escalation triggers. The agent follows your rules and can warm-transfer to a human at any point.

Is there a free trial?

Yes — the free tier includes 10 calls with no credit card. All paid plans also come with a 7-day money-back guarantee.

All case studies

DTC / home goods·Lithuania

Amourlinen 36× ROI in 3 months

Amourlinen is a Lithuania-based DTC brand selling handcrafted organic linen bedding, clothing, and home goods globally via Shopify. Email and SMS recovery had hit saturation — the channels were tapped.

$5,283

Recovered revenue

36×

ROI

3 months

Campaign length

The Challenge

Where the revenue was leaking

Persistently high cart abandonment with diminishing returns from traditional email and SMS flows. They needed a channel customers hadn't been saturated by.

The Setup

How Callsy was wired in

Five-click setup, no technical work required
Branded AI assistant named "Emma" placing calls shortly after abandonment
15% discount offered as a return incentive during the call
Fully automated — plugs into Shopify and runs end-to-end

Great app for recovering those abandoned cart purchases — we get around 34× ROI. The team is very responsive and constantly developing new features.

— Lucas, Amourlinen

Run the same play on your store

Free tier includes 10 calls. No credit card. Five-minute setup.

Start free

Read the full case study on callsy.ai

GSMPRO

Chile-based electronics retailer recovered $63,220 in 30 days with Spanish-localized AI calls.

Read

Health & wellness

Neurogena

UK health brand recovered $21,546 by calling back buyers with unanswered questions about pain-relief devices.

Read