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Build in an afternoonShip phone-calling apps with Lovable
Lovable ships the UI. Callsy ships the calls. Together, you go from empty project to an app that phones real customers in a single afternoon — no Twilio, no TTS plumbing, no telephony knowledge required.
Voices your Lovable app can use
50+ voices across 40+ languages — click any to hear a sample.
Why Lovable + Callsy
Lovable builds the app
Callsy makes it call
Lovable is the fastest way from idea to shipped app — but any app that needs to phone real customers used to run into weeks of telephony work. Callsy compresses that into a single REST API. Your Lovable prompt integrates both in one turn.
One API, 27 tools
Every Callsy capability is a REST endpoint Lovable can fetch. No extra services, no SDKs to vendor.
Idea to calling customers in hours
Prototype in the morning, call your first user in the afternoon. We've seen teams ship working outbound dialers before lunch.
No telephony to learn
You don't need to understand Twilio, PSTN, SIP, or TTS. Callsy handles every layer below your UI.
Free to prototype
10 free calls a month is plenty to test an MVP with real humans before you commit.
The Lovable prompt
Paste this · Lovable builds the rest
A complete working prompt — copy into Lovable and it'll wire up the button, the API call, the polling, and the UI:
Add a "Call my customer" button to each order row.
When clicked, POST to https://api.callsy.ai/v1/calls with:
- agent_id: "agt_support"
- contact_phone: the order's phone
- context: { order_id, customer_name, issue_summary }
Use Authorization: Bearer <CALLSY_KEY>
Show a loading spinner while waiting for response.
Display the returned call_id and poll /v1/calls/{id}
every 5 seconds until outcome is set.Apps to ship in an afternoon
Start from one of these
Support callback widget
A 'Call me back' button for any site. User drops their number, Callsy calls them within 60 seconds.
Appointment reminder app
Dashboard of upcoming bookings. One-click 'Send voice reminder' per row. Shows call outcome inline.
Sales dialer
List of leads. Agent's Callsy voice dials them one by one. Results tracked in the built-in CRM.
Outage notifier
Internal tool that calls on-call engineers when a service goes down. Transcripts logged for post-mortems.
No-show recovery
Calendar app that calls customers when they miss their appointment. Offers the next slot.
Multi-language survey
User uploads a contact list. Your Lovable app calls each in their language and collects survey answers.
Frequently asked
How does Callsy fit into a Lovable project?
Callsy is a REST API. In your Lovable prompt, ask Lovable to integrate with Callsy — give it your API key and the endpoint. Lovable will wire up fetch calls, loading states, and the UI around it.
Do I need to manage telephony, TTS, or voices?
No. That's the whole point. Callsy handles Twilio, ElevenLabs, Deepgram, routing, and conversation state. Your Lovable app just POSTs to api.callsy.ai and renders the response.
Can my Lovable app receive call results?
Yes. Configure a webhook on the Callsy agent pointing at your Lovable app's endpoint. When a call ends, Callsy POSTs the full transcript and outcome to you.
What sort of apps work well with this?
Customer-support callback tools, sales-dialers, booking confirmations, internal ops automations, 'call me when X' buttons on ecommerce sites, appointment reminder apps. Anything where the user wants the app to phone someone on their behalf.
Is there a free tier?
Yes — 10 calls per month, no credit card required. Perfect for prototyping and first customers.
Ship the calling app
Free tier · 10 calls · no credit card · start prototyping now.
Start with Lovable