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I will build retell ai agent vapi ai calling agent ghl ai voice agent cold calling
Marcus C
About this gig
Are you missing sales leads or struggling with delayed follow-ups?
I will build and set up an advanced AI Voice Agent, AI Calling Agent, or 24/7 AI Receptionist using Retell AI, Vapi AI, and GoHighLevel (GHL) for inbound customer calls and outbound cold calling campaigns.
Whether you need a local AI Receptionist or a high-volume AI Cold Calling SDR, I build natural, low-latency voice agents that handle objections, answer queries, and book appointments directly on your calendar.
WHAT I CAN BUILD FOR YOU:
- Retell AI & Vapi AI Inbound/Outbound Agent Setup
- GoHighLevel (GHL) CRM Integration & Pipeline Sync
- High-Converting Outbound Cold Calling Agents
- 24/7 AI Receptionist for Answering & Screening
- Instant Booking (Google Calendar, Cal.com, GHL)
- Dynamic Prompts & Human Handoff Guardrails
- Automated SMS/Email Follow-ups (Make/n8n)
- Telephony & Phone Setup (Twilio, Retell, Vapi)
WHY CHOOSE THIS GIG?
- Natural human-sounding conversational flow
- Seamless GoHighLevel and CRM setup
- Live Test Call Demo provided before final delivery
Don't let competitors snatch your leads. Message me now to test a live demo or discuss your call flow!
Get to know Marcus C
Marcus C
Professional website designer
- FromUnited Kingdom
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German
I help businesses automate, build, and scale with smart AI and no code solutions. I build AI voice agents using Retell AI and Vapi for automated calling, cold outreach, and receptionist tasks, develop SaaS and MVP applications on Bubble io without traditional code, and create online booking systems for hotels, appointments, and service businesses. My focus is building tools that save you time, cut costs, and help your business run smoother, delivered fast and built to scale.
FAQ
What is the difference between Retell AI and Vapi AI?
Retell AI excels at ultra-low latency, natural-sounding inbound calls and fast deployment. Vapi AI offers complex multi-step custom flows, advanced function calling, and is ideal for custom developer setups and cold calling campaigns. I will recommend the best one for your exact use case.
Can the AI cold caller or receptionist integrate with GoHighLevel (GHL)?
Yes! I specialize in full GoHighLevel integrations. The AI agent can update contact records, log call transcripts, move leads down your sales pipeline, and trigger follow-up SMS or email workflows.
Can the AI Voice Agent book appointments directly during a call?
Absolutely. The AI checks live availability in your GoHighLevel calendar, Google Calendar, or Cal.com, confirms the slot with the caller, and books the meeting instantly on the call.
Will I be able to test the voice agent before accepting the order?
Yes! I conduct thorough live test calls and provide you with a test phone number so you can speak to your AI agent and refine its responses before final project handoff.
