Works with your stack. Ready from day one.
Callaro connects to your telephony, CRM, commerce platform, and automation engine — plus any external MCP server and your own HTTP APIs. No data migration. No rebuilds. Just call outcomes flowing into the systems you already use.
How Callaro connects
Bring your own telephony
Keep your existing carrier and numbers. Connect Twilio, Plivo, Exotel, MCUBE, Ozonetel, or Knowlarity — no rip-and-replace.
REST, Webhooks & WebSockets
Drive calls over our REST API, stream live audio and events over WebSockets, and push call outcomes to any endpoint via webhooks.
CRM writebacks
Log outcomes, update contacts, create deals, and trigger workflows in HubSpot, Salesforce, and Zoho — during the call.
Native connectors
Pre-built integrations for HubSpot, Salesforce, Shopify, Twilio, Zapier, and n8n — configure in minutes.
Connect any MCP server
Register any external MCP server with bearer or API-key auth. Callaro auto-discovers its tools and lets the agent call them mid-conversation — with a per-agent tool allowlist.
In-call API orchestration
Fetch context with a pre-call API, call your HTTP APIs mid-call, map responses to variables with JMESPath, chain outputs between tools, and let the AI decide which API to call in real time.
Supported integrations
15 integrations across telephony, CRM, commerce, and automation.
Twilio
Route calls globally through Twilio's programmable voice — SIP trunking, number provisioning, and call routing.
Exotel
Cloud telephony platform — termination, number masking, and IVR flows for business calls.
Plivo
Bring your own Plivo account for programmable voice, SIP trunking, and global number provisioning.
MCUBE
Cloud telephony and call-management stack — connect MCUBE numbers, IVR, and call routing to Callaro.
Ozonetel
Contact centre and cloud telephony stack — real-time agent handoff and call logs.
Knowlarity
Smart IVR and virtual receptionist flows for finance and healthcare teams.
HubSpot
Log call outcomes, update contact properties, create deals, and trigger HubSpot workflows — all during the call.
Salesforce
Update leads, opportunities, and tasks in real time. Push transcripts and outcome tags straight into Salesforce.
Zoho CRM
Sync contacts, log calls, and trigger Zoho automations. Great fit for SMB teams running on the Zoho ecosystem.
Interakt
Trigger WhatsApp messages on call completion. Send booking confirmations, payment links, and follow-ups automatically.
WATI
Connect WhatsApp workflows to voice outcomes. Route high-intent leads from calls directly to WATI inbox.
WhatsApp Business API
Direct integration for custom WhatsApp messaging flows based on real-time conversational triggers.
Shopify
Look up order status, trigger returns, and handle post-purchase queries — all via voice, without a human agent.
Zapier
Connect call outcomes to 6,000+ apps with zero code. Trigger Zaps on call end, outcome tag, or escalation.
n8n
For technical teams: self-host workflows that react to Callaro webhooks and push data anywhere.
Don't see your stack?
We're a young product and actively expanding integrations. If you're running something we haven't listed yet — share your stack and we'll confirm the best integration path within 48 hours.
Ready to connect your stack?
Book a demo and we'll walk through exactly how Callaro fits into your existing systems.
Book a demo