AI Voice Agent System Using Vapi/Retell, Zapier, and GoHighLevel

@rajat07me

Hi, I can build this AI voice agent system with Vapi or Retell, GoHighLevel, Zapier, and Twilio end to end. Your scope is clear and includes the right pieces: inbound/outbound calling, qualification, appointment booking, CRM updates, handoff logic, and reporting. I also like that you want fallback handling, transcripts, documentation, and team training, because that is what makes these systems usable in the real world. I have solid experience with CRM automation, webhook-based workflows, and AI-driven customer journeys, so I can set this up in a practical way that is easy for your team to manage.

@a4logic

Hello, With over a decade of experience, our company offers a complete suite of web services designed to meet the ever-evolving demands of the digital landscape. Our forte lies in web design & development and creating powerful integrated solutions that efficiently handle complex tasks such as your AI Voice Agent project. As an expert in PHP, I am confident in delivering a robust system that seamlessly integrates Vapi/Retell AI, GoHighLevel, Zapier, and Twilio. Having already implemented CRM automation and appointment-booking systems utilizing similar tools, I am deeply familiar with the intricacies involved. My expertise in crafting conversational prompts with Retell and Vapi AI will help us design a qualified-lead screening script which optimizes your pipeline stages in GoHighLevel. My team's motto is to provide customer service that adds a "WOW" factor. This implies we don't leave you hanging high and dry - instead, we'll meticulously document each step taken in this project alongside offering post-launch support for any issues encountered. We are here to turn your dreams into reality; let's elevate your business to new heights together! Thanks!

@kamran2012

Hello, I will deliver a fully working inbound and outbound AI voice agent using Vapi, GoHighLevel, and Zapier, covering lead qualification, appointment booking, human handoff, and call summary storage across your pipelines. On a similar voice agent build, moving qualification logic into the first 30 seconds of the call doubled the booking rate for the follow up appointments. I will structure your scripts the same way. Questions: 1) How many qualification questions does your current script include, and are the criteria already defined in GoHighLevel? 2) Do you already have a Twilio number connected to Vapi, or should I provision that as part of setup? Send me a message and we can go over the details. Best regards, Kamran

@diektech

Hi — Elias here from Miami. I understand you’re looking to build an AI voice agent system using Vapi/Retell, Zapier, and GoHighLevel. The goal is to create an effective automation platform that enhances user engagement through voice interactions. What usually matters most here is ensuring scalability and reliability. A common issue in systems like this is managing integrations while maintaining performance. The tricky part is ensuring that the voice interactions are responsive and capable of handling user queries intelligently. To tackle this, I’d focus on a modular architecture for easier updates and maintenance. Integrating Zapier with GoHighLevel can streamline workflows, while Vapi enhances voice processing. I’d implement robust error handling to quickly identify and address issues. I have experience developing similar automation solutions, integrating various APIs and ensuring smooth data flow. This background helps me foresee potential challenges and address them proactively. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for the voice agent system? Q2 – Are there existing workflows that need integration, or are we starting from scratch? Q3 – What are your expectations regarding scalability for future expansion? Happy to discuss the details and suggest the best approach. Looking forward to hearing from you.

@raphaelokekeze

Building an AI voice agent system that integrates Vapi or Retell AI with GoHighLevel requires a solid grasp of API webhooks and CRM data management. I have extensive experience setting up complex automation workflows and connecting external platforms to GoHighLevel to ensure inbound and outbound call data flows seamlessly into your existing systems. My background includes deep experience with GoHighLevel, API integrations, and the technical logic required to make these systems talk to one another effectively. Since I work daily with custom PHP and automation tools, I can handle the backend connections and troubleshooting needed to ensure the voice agent functions reliably without constant manual intervention. I can complete this entire integration for a total of $969.13 within 1 day of being awarded the project. Let’s jump on a quick chat to confirm your specific call flow requirements and get this system running today.

@extreamcode

Hi there, Your AI voice agent needs more than call handling , it needs a system that quietly turns conversations into clean CRM actions without missing context. I’ve built automation and CRM workflows with APIs, webhooks, GoHighLevel, Twilio-style telephony setups, and Zapier, and I can map your inbound/outbound flow so leads are qualified, routed, booked, and logged correctly. I’ll focus on reliable call logic, transcript/summaries, handoff rules, pipeline updates, and fallback handling so the system behaves consistently across scenarios. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I can start by outlining the call states, automation branches, and CRM field mapping, then move into implementation and testing. What qualification criteria and booking rules should the agent use when deciding between nurture, transfer, or appointment booking? What qualification criteria and booking rules should the agent use when deciding between nurture, transfer, or appointment booking? Do you already have the Vapi/Retell voice prompts and GoHighLevel pipeline stages defined? Thanks, Asad Looking forward to your reply so we can finalize the exact plan.

@starttechno

Your project needs more than a conversational bot: it needs a reliable inbound/outbound calling workflow where every qualification answer, appointment action, transfer, and final disposition is reflected in GoHighLevel. I will configure Vapi or Retell with custom prompts, qualification logic, objection/fallback handling, voicemail behavior, and human-transfer rules. Using GoHighLevel APIs, webhooks, and Zapier where appropriate, I will sync contacts, notes, custom fields, tags, opportunities, and pipeline stages; query calendar availability; and create, reschedule, or cancel appointments. Twilio/telephony routing will support inbound numbers, outbound campaigns, recordings, retries, and escalation notifications. Each completed call will produce a structured outcome, transcript, recording link, and AI summary in the CRM, while qualified leads trigger confirmation, reminder, SMS/email, and follow-up workflows. I will test inbound, outbound, no-answer, voicemail, booking, rescheduling, disqualification, and live-agent handoff scenarios, then provide clear setup documentation and a team walkthrough. With 10+ years in API automation, Python/PHP systems, LLM integrations, and CRM workflows, I focus on dependable webhook handling, idempotent updates, and clear audit trails rather than a brittle demo. Muhammad Saad

@komalshaikh92

Hi there, You laid out a very specific call flow, lead enters GoHighLevel, agent calls, qualifies, books via calendar check, transfers to human when needed, so the integration needs GoHighLevel acting as the single source of truth throughout, with Vapi/Retell and Zapier both writing back to it consistently rather than each maintaining separate state. My approach would be to first set up the Vapi/Retell voice agent with your qualification script and conversational logic, then build the GoHighLevel integration for contacts, pipelines, and calendar booking, followed by Zapier workflows connecting call outcomes to SMS/email follow-ups and human hand-off triggers, finishing with call recording, transcription, and reporting tested across different call scenarios before launch. I have experience developing automation workflows with API integrations, webhooks, and CRM-connected systems, with a strong focus on clean, reliable data flow between platforms.

@gutibs

Hi! This is something we can definitely build. A couple of things I'd want to clarify before scoping it properly. Is the call script already written, or do we need to design the qualification logic and conversation flow from scratch? That changes the workload significantly. And on the Vapi vs Retell side — do you have a preference, or are you open to a recommendation based on what fits your setup better? We'd wire this using Vapi (or Retell) for the voice layer, GoHighLevel for CRM and calendar, Zapier for automation bridges, and Twilio for telephony — with direct webhooks where Zapier adds unnecessary latency. Happy to keep the conversation going and nail down the scope before putting a number on it. Gustavo & the DoTheCode team

@corpmember29

Hello, {{{ I HAVE CREATED SIMILAR BEFORE AND I CAN SHOW YOU }}}} >>>> Multi languages (English and Arabic)Left-To-Right (LTR) and Right-To-Left (RTL) <<<< I have carefully reviewed your requirements for an AI voice agent automation system using Vapi/Retell AI, Zapier, and GoHighLevel. I have 10+ years of experience in AI development, automation workflows, API integrations, CRM systems, and building intelligent voice and chatbot solutions. I can build a complete AI voice agent system capable of handling inbound/outbound calls, lead qualification, appointment scheduling, CRM updates, workflow automation, human handoff, call recording, transcription, summaries, and performance tracking. AI Voice Agent Platform Voice AI Agent Inbound Call Handling Outbound Follow-up Calls Lead Qualification Natural Conversations Call Transfer & Handoff CRM & Automation GoHighLevel Integration Contact & Pipeline Management Appointment Booking SMS & Email Automation Zapier Workflows Call Intelligence Call Recording Transcription & Summaries Outcome Tracking Agent Performance Reports Admin Panel Dashboard Lead Management Workflow Management Analytics & Settings I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Thanks Christina

@ravichedwal

As an experienced Full Stack Developer with a strong emphasis on integrating systems and automations for seamless operation, I am confident I'm the right fit for your AI Voice Agent System project. Having worked extensively with Vapi and Retell AI, GoHighLevel, Zapier, Telephony providers like Twilio, as well as APIs and webhooks in multiple projects, my expertise will be crucial in assuring your project's success. Having worked on CRM automation and appointment booking systems using AI and voice agents, I have a solid understanding of inbound and outbound call workflows that is essential for your project. My previous deployments have been tailored to unique business needs with great attention to detail and your project won't be any different. Additionally, I'll apply my extensive experience in handling APIs which will make your system seamlessly integrate with various services you require!"

@Aliraza2727

As a senior developer with 7 years of experience in WordPress, Shopify, React, Laravel, HTML, CSS, Bootstrap, JavaScript, jQuery, Ajax, PHP, SEO and graphic design, I'm excited to help bring your project to life. Let's begin with a conversation. I have read through your requirements, and I'm confident that I’m the perfect fit for this task. My goal is to deliver work that exceeds your expectations. We can finalize the price after our discussion to ensure it aligns with your needs. Let's get started!

@Hubready

Hello!, I am a Florida-based senior software engineer(frontend, backend, ecommerce, etc) with 15+ years of experience in Python, PHP, Zapier, GoHighLevel, Vapi, CRM automations, and AI voice workflows. I read your project carefully, and the goal is clear: build a real AI voice agent system that works end to end, not just a demo. I’ve built similar automation stacks where the voice layer, CRM sync, follow-up logic, and reporting all need to stay reliable. Could you please clarify the following questions to help me better understand the project? 1. Do you want Vapi or Retell as the main voice engine, or should I make it flexible for both? 2. What is the first priority, inbound qualification, outbound telemarketing, appointment booking, or lead reactivation? 3. Should GoHighLevel be the main source of truth, or do you also need Salesforce sync and reporting? My approach: - map the call flow and data fields - build the prompts, routing, and fallback handling - connect Zapier/GHL/Salesforce for logging and follow-up automations - test edge cases like voicemail, no-answer, transfers, and failed actions - document everything clearly Relevant work includes AI call automation for a local HVAC lead-gen funnel, a GoHighLevel pipeline sync for a dental office, a Zapier-based follow-up system for a coaching business, and a Salesforce-connected callback workflow for a service company. I’ll treat this like a serious build and make sure it’s clean, stable, and practical from day one.

@AhteshamAK

Building an AI voice system is not only about connecting a voice platform — the important part is making sure calls, leads, appointments, and CRM data move correctly through the entire workflow. I can help build the complete automation flow between the voice agent, GoHighLevel, Zapier, APIs, and your business processes. My experience with full-stack development, backend systems, APIs, databases, and automation workflows allows me to handle the technical integrations and create reliable workflows. I’ll focus on: Inbound and outbound call flows Lead qualification logic GoHighLevel contact/pipeline updates Calendar booking automation Webhooks and API connections Call summaries, transcripts, and notifications Testing different real-world scenarios A couple of questions before starting: Is GoHighLevel the main CRM source of truth for all lead and appointment data? Do you already have the call scripts and qualification questions prepared? I can review your current setup and suggest the cleanest architecture before implementation. Best, Ahtesham

@Joya1996

Hi there, I can help you build the complete AI calling workflow you described using Vapi/Retell, Zapier, GoHighLevel, and Twilio. This is the kind of project where the main value is not only the voice bot itself, but making sure the CRM, calendar, workflows, retries, notifications, and human handoff all stay synced correctly. I can handle the scripting, automation logic, webhook setup, testing across scenarios, and post-launch fixes after deployment. The end result will be structured, documented, and easy for your team to operate.

@teodorgeorge

Hello, I have worked on CRM automation and appointment workflows with inbound and outbound call logic, webhooks, and API Integration. Your Vapi setup fits this kind of AI Voice Agents project, with GoHighLevel updates, Zapier steps, Twilio calls, and transcript storage. While this is not Salesforce App Development, the same CRM field mapping and pipeline discipline will help keep data clean. I will configure the call scripts, qualification rules, calendar checks, human handoff, retries, recordings, summaries, and fallback paths. Then I will test real call scenarios, document the system, and walk your team through post-launch fixes. Best regards, Teo

@umairdev101

Hi, I have extensive experience building AI voice agents using Vapi/Retell AI integrated with GoHighLevel, Zapier, Twilio, and custom APIs for inbound/outbound calling, lead qualification, appointment booking, and CRM automation. I can deliver a fully configured, production-ready solution with human handoff, call recordings, transcripts, workflow automation, error handling, documentation, team training, and post-launch support. I'd be happy to discuss your call flows, qualification logic, and GoHighLevel setup to provide the best architecture and an accurate timeline.

@mubeenm5026

As a team with extensive experience in AI, SaaS, web and mobile development, Web Crest is well-suited to tackle the complexity of your project. With our deep knowledge of Vapi or Retell AI, GoHighLevel, Zapier, Twilio integration and more, we're confident in our ability to build a comprehensive AI voice agent system that handles your needs. Whether it's developing interactive call scripts, setting up calendaring functions or implementing CRM and work flow automation, our aim is to create not just a functional system but one that works seamlessly across different components. An often under-appreciated aspect of any project is its documentation and clear communication. We understand this and prioritize thorough documentation which will be provided alongside the training sessions we offer to ensure you'll find your new system accessible post-launch. And if you encounter any hiccups along the way, rest assured as we commit to providing long-term technical support. Finally, being client-focused is at the core of what we do. Not only do we bring together technical expertise from various fields to create robust solutions, but we always consider your business specifics when designing these systems. So let's bring your vision for an AI voice agent system to life together. Choose us for reliable, secure, scalable and high-performing digital products!

@ShaikhAneesa

Hi there, I understand you're looking to build a complete AI voice agent platform that handles inbound and outbound calls, qualifies leads, books appointments, and automates CRM workflows using Vapi/Retell AI, GoHighLevel, Zapier, Twilio, and APIs. With experience building AI voice agents, CRM automations, API integrations, and workflow orchestration, I can deliver a scalable, production-ready solution that streamlines customer engagement while minimizing manual intervention. My approach is to design and configure an AI voice agent that manages natural conversations, qualification logic, appointment scheduling, CRM updates, and intelligent human handoffs. I'll integrate Vapi or Retell AI with GoHighLevel, calendars, Twilio, and Zapier using secure APIs and webhooks, ensuring contacts, opportunities, notes, tags, pipeline stages, recordings, transcripts, and summaries synchronize automatically. The solution will include inbound and outbound workflows, retry and voicemail handling, SMS/email automation, robust error handling, reporting dashboards, comprehensive testing, documentation, deployment support, and a team walkthrough to ensure a smooth production launch. Could you clarify whether you already have your qualification scripts, GoHighLevel pipelines, and calendar workflows configured, or should these also be designed as part of this project? I'm ready to start immediately. Warm Regards, Aneesa.