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Project: Retell AI ↔ Zenbooker Scheduling Bridge plus FluentCRM Lead Capture What we’re building: A backend bridge that lets Retell AI automatically book, reschedule, and cancel appointments in Zenbooker during live phone calls while also capturing leads immediately in FluentCRM for abandoned follow up sequences. Must have outcomes: When a caller tells Retell AI to book, reschedule, or cancel, the integration must * Create, reschedule, or cancel the correct appointment in Zenbooker * Trigger Zenbooker’s built in confirmation email automatically when a booking is created, assuming notifications are enabled * Handle reschedules and cancellations cleanly with no broken states and no double booking * Capture the caller as a lead in FluentCRM as soon as we have name plus phone or email even if the booking is never completed Why FluentCRM is required: We want e commerce style cart abandon nurturing. Zenbooker may not save customer details until a booking is created, so we need lead capture outside Zenbooker. If Retell collects name and email and the caller hangs up before booking, that lead must still exist in FluentCRM so we can follow up. Key behaviors to implement: - Scenario A caller starts booking and completes booking on the same call * Lead is created or updated in FluentCRM early * When Zenbooker booking succeeds, FluentCRM contact is updated with tags and booking metadata - Scenario B caller starts booking but call ends before booking is completed * Lead is still created in FluentCRM * After a configurable window, the lead is tagged as abandoned to trigger a nurture sequence - Scenario C caller abandons on a call then later books via the website or another call * Zenbooker is the source of truth for bookings across all channels * When Zenbooker sends a job created webhook regardless of origin, the middleware updates the matching FluentCRM contact to Booked and applies service type tags * Service tags should be permanent so we build purchase history over time CRM segmentation requirement: We want segmentation by service type. - Permanent service tags to apply on every booking * WM Service: TV Mounting * WM Service: Fireplace Mounting * WM Service: Soundbar Install * WM Service: Wire Concealment * WM Service: Power Add On * WM Service: Media Wall * WM Service: Accent Wall * WM Service: Other - Lifecycle tags that can change over time * WM Lead * WM Abandoned Lead * WM Booked * WM Rescheduled * WM Canceled Service tags should never be removed. Lifecycle tags may be added or removed as the customer state changes. Tech preferences: * Use any stack you prefer Node.js, Python, or similar * Must be cloud friendly, secure, and well documented * Retell AI does not have an API vault, so Cloudflare Workers is a popular option for securely handling API keys and running middleware * Include idempotency protection to prevent double bookings if requests are retried Deliverables: * A runnable middleware service that acts as the bridge * Setup docs covering API keys, webhooks, environment variables, and how to deploy and run * A proof package such as a Postman collection or test script demonstrating book, reschedule, cancel * Webhook handling for Zenbooker job events at minimum job created, job rescheduled, job canceled * FluentCRM integration for contact upsert, tagging, and field updates * If you’ve built similar voice bot to scheduler systems, include a short note on your approach and architecture Scope of work core tasks: - Review and mapping * Review our Retell call flow and function triggers * Map Retell function payloads to Zenbooker API inputs * Define a service type mapping table Zenbooker service ID to FluentCRM service tag - Retell tool calls to middleware * Implement endpoints for capture lead, get availability, create booking, reschedule booking, cancel booking - Zenbooker API connection * Validate address or service area * Fetch real time availability * Create bookings * Reschedule bookings * Cancel bookings * Confirm Zenbooker confirmation emails trigger on API created jobs - Lead capture to FluentCRM * Upsert contact in FluentCRM as soon as name plus phone or email is captured * Ensure inbound caller number is captured when available from call metadata and stored in FluentCRM * Apply tags and store fields for lead status and later booking enrichment - Webhooks for cross channel booking updates * Build Zenbooker webhook endpoint * On job created, update FluentCRM contact to WM Booked and apply permanent service tag * On job rescheduled or job canceled, update tags and fields accordingly * Protect against duplicate webhook deliveries - Error handling and safe responses * Handle gracefully out of service area, no slots available, missing or invalid customer info, API failures timeouts and retries * Avoid broken states and double bookings * Return safe fallback messages for the voice agent to say * Demo and documentation * Short setup docs * Working demo or Postman collection proving all flows * Basic logging or traceability so issues can be debugged quickly Success definition goal: * Customer speaks to Retell AI * Middleware calls Zenbooker to create or update the appointment * Zenbooker confirmation email sends * Lead is captured early in FluentCRM * Abandoned leads are tagged * Any later website booking triggers a FluentCRM upgrade via Zenbooker webhook with service type segmentation
Projekt-ID: 40226072
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127 Freelancer bieten im Durchschnitt $163 USD für diesen Auftrag

I have thoroughly reviewed the project requirements for Retell AI - Zenbooker API Bridge and believe my skills in Python, Cloud Computing, Software Architecture, Test Automation, and HTML align perfectly with the task at hand. I am confident in my ability to deliver a seamless voice booking experience as outlined in the project description. Let's discuss the full scope to adjust the budget accordingly. My priority is to work within your budget and deliver the best results. Please review my 15 years of experience and let's start this project. Looking forward to your response.
$175 USD in 7 Tagen
8,5
8,5

Hello, I am excited about the opportunity to work on the Retell AI and Zenbooker Scheduling Bridge project. Creating a seamless integration between these platforms to enhance lead capture through FluentCRM is a challenge I am well-equipped to tackle. My experience in building robust connections between various systems ensures that we can streamline the scheduling process while effectively capturing leads. I understand the importance of a reliable and efficient solution that meets your specific needs. By focusing on user experience and functionality, I will deliver a solution that not only meets but exceeds your expectations. I look forward to discussing how we can bring this project to life together. Regards, Nurul Hasan
$200 USD in 7 Tagen
8,6
8,6

Hi, I understand the critical need for a seamless and reliable bridge between Retell AI and Zenbooker to automate appointment management flawlessly. With solid experience integrating voice-driven AI systems with scheduling APIs, I’m confident in delivering a secure, cloud-friendly middleware that handles booking, rescheduling, and cancellations with clean state management and automated email confirmations. I will thoroughly review your Retell AI call flows, map outputs to Zenbooker’s API, and implement robust booking logic, including recommended business rules like blackout windows and lead-time restrictions to prevent conflicts and optimize scheduling. Using Node.js or Python along with Cloudflare Workers for secure key management, I’ll ensure real-time availability checks and comprehensive error handling. You’ll receive runnable middleware, clear documentation for setup and deployment, plus a test collection demonstrating all key flows. I’ve built similar voice-to-scheduler integrations and can share insights on architecture and approach. 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. Which business rules (e.g., blackout windows, lead-time limits, service-area restrictions) are priorities for your workflow, and do you have existing configurations to share? Best regards, Asad
$95 USD in 5 Tagen
8,2
8,2

⭐⭐⭐⭐⭐ Create a Seamless Appointment Booking Bridge with Retell AI ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for a backend bridge for Retell AI to manage appointments in Zenbooker. You don't need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for appointment scheduling integrations. I will build a secure, cloud-friendly middleware that ensures smooth booking, rescheduling, and cancellation processes, all while providing documentation and a demo. ➡️ Why Me? I can easily create your backend bridge as I have 5 years of experience in API integration and middleware development. My expertise includes Node.js, Python, and cloud services. Additionally, I have a strong grip on error handling, data validation, and seamless integration techniques. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to chatting with you! ➡️ Skills & Experience: ✅ Node.js ✅ Python ✅ API Integration ✅ Middleware Development ✅ Data Validation ✅ Error Handling ✅ Webhooks ✅ Cloud Services ✅ Documentation ✅ Real-Time Processing ✅ Testing & Debugging ✅ Automation Waiting for your response! Best Regards, Zohaib
$150 USD in 2 Tagen
8,0
8,0

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat, where I can also share relevant examples of my past work. I'm looking forward to hearing back from you! Best Regards, Divu.
$250 USD in 4 Tagen
8,1
8,1

With over 7 years of experience as a senior engineer, I believe my extensive skill sets place me in an advantageous position to build your project. My proficiency in various backend technologies including Python, Node.js and diverse databases would prove invaluable for implementing the backend bridge needed for Retell AI to communicate seamlessly with Zenbooker. As for lead capturing, databasing and segmentation, I'm well-versed in CRM systems like FluentCRM and have employed various strategies such as tagging, field updates and lifecycle management that align seamlessly with your requirements. My technical acumen extends beyond programming. I can ensure that your service is cloud-friendly, secure and well-documented - pivotal qualities in maintaining an efficient and bug-free system. Capitalizing on my understanding of the Cloudflare Worker API, I can also guarantee a secure environment while handling sensitive data such as API keys and deploying necessary middleware. Finally, it's worth mentioning that I have experience incorporating voice bots into scheduler systems- analogous to Retell AI integration you require. This means I can bring insightful knowledge on approach and architecture adapted to contemporary Vui services much like yours. Given these merits, partnering with me would indeed guarantee punctuality, budget compliance and above all impeccable quality for your noteworthy project.
$140 USD in 7 Tagen
7,7
7,7

Hi there, We’ve built similar voice-to-scheduler systems, integrating with platforms like Calendly and Google Calendar. We understand the nuances of creating a seamless experience where a customer speaks, and the system accurately books, reschedules, or cancels appointments. For this project, we’ll use a dedicated AI model to extract relevant information from the voice input, ensuring we capture the right details for each booking. We’ll also implement robust error handling to manage scenarios like incorrect customer names or out-of-service-area bookings. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil
$130,05 USD in 7 Tagen
7,3
7,3

I have more than 8 years of experience in web development, specializing in Node.js, React, and PHP. I have extensive experience in Excel automation and accounting software. For the Retell AI ↔ Zenbooker Scheduling Bridge plus FluentCRM Lead Capture project, I am confident in delivering a seamless backend bridge that allows for automated appointment booking, rescheduling, cancellation, and lead capture. My strong technical skills, coupled with my experience in building similar voice bot to scheduler systems, make me the ideal candidate for this project. I am dedicated to providing a secure, well-documented, and cloud-friendly solution that meets all the outlined requirements. Let's work together to achieve success in this project.
$138 USD in 7 Tagen
7,3
7,3

Hi, Expert here , have a question for your Do you want the bridge to enforce all business rules upfront (technician assignment, blackout windows, lead times, service area) or start with just the core booking/reschedule/cancel flows and layer rules later? Thank you
$270 USD in 1 Tag
6,8
6,8

Hi there, I am excited about the Retell AI ↔ Zenbooker Scheduling Bridge project. I have extensive experience in integrating various systems, specifically in creating seamless API bridges. Previously, I developed middleware for a client that enabled real-time booking and rescheduling while ensuring lead capture in their CRM, mirroring the functionalities you require. ### Relevant Experience: 1. **Middleware Development:** Built a real-time booking system integrating multiple APIs, leading to a 30% increase in booking efficiency. 2. **Lead Capture Systems:** Designed solutions for preserving potential leads, even when transactions were incomplete, improving follow-up rates by 40%. 3. **Automation Flows:** Developed error-handling protocols for complex API interactions to avoid double bookings or broken states. I suggest a step-by-step plan: 1. Review Retell call flows and map to Zenbooker API inputs. 2. Implement lead capture endpoints for immediate response. 3. Ensure robust webhook handling for Zenbooker events. I look forward to discussing how I can help you execute this project successfully.
$155 USD in 2 Tagen
6,6
6,6

Hello , I checked your project, and it looks interesting. This is something we already work on, so the requirements are clear from the start. We mainly work on Python, Cloud Computing, Software Architecture, Test Automation, HTML, Node.js, Documentation, API Development, API Integration, Cloudflare We focus on making things simple, reliable, and actually useful in real life not overcomplicated stuff. Let’s connect in chat and see if we’re a good fit for this. Best Regards, Ali nawaz
$129 USD in 4 Tagen
6,2
6,2

Hi there, I am excited about the opportunity to create a robust backend bridge that seamlessly integrates Retell AI with Zenbooker. My experience in API integration, combined with a solid understanding of cloud computing, positions me well to deliver a fluid booking solution that meets all your outlined requirements. I will ensure that the bridge can handle booking, rescheduling, and cancellations smoothly, while triggering the necessary confirmation emails. Additionally, I will implement business rules such as technician assignments and blackout windows, which will enhance the system's reliability and user experience. Within the 10-day timeline, I will provide a runnable middleware service, complete with detailed documentation on setup and deployment, as well as demonstrating all three booking flows effectively. I'm eager to discuss the specific business rules that should be implemented. Best regards,
$200 USD in 10 Tagen
6,1
6,1

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$80 USD in 4 Tagen
6,1
6,1

Hello, I’ve gone through your project details, and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Node.js and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. For the Zenbooker API bridge, I can ensure effective integration for seamless booking, rescheduling, and cancellation through Retell AI. I’ll implement the required business rules to avoid double-booking and handle common errors. Here’s a brief outline of my approach: 1. Review and mapping of the current call flow. 2. Connect to Zenbooker API endpoints for data validation. 3. Develop logic to fetch availability and create bookings securely using your preferred tech stack. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you have any specific preferences for the deployment environment or hosting? Let’s discuss over chat! Regards, Arpit Jaiswal
$155 USD in 25 Tagen
6,5
6,5

Hi there, I’ve carefully reviewed your project requirements for building a backend bridge between Retell AI and Zenbooker. I’m confident in delivering a secure, cloud-friendly middleware that will flawlessly handle appointment bookings, rescheduling, and cancellations while triggering Zenbooker’s confirmation emails automatically. - Develop the bridge using Node.js or Python with strong focus on API integration and middleware security (Cloudflare Workers recommended). - Implement robust business rules like technician assignment, blackout windows, lead-time restrictions, and service-area validation for flawless booking logic. - Handle errors gracefully including API failures, service area restrictions, and data validation to ensure a seamless voice-activated booking experience. - Provide comprehensive setup documentation, webhooks, and demo test scripts showcasing all core flows. **Skills:** ✅ API Development & Integration , Retell AI & Zenbooker API mapping and secure middleware ✅ Node.js / Python , cloud-friendly backend logic with Cloudflare Workers architecture ✅ Error Handling & Validation , managing edge cases and booking constraints ✅ Documentation & Test Automation , Postman collection, demo scripts, and setup docs ✅ Software Architecture , designing scalable middleware bridging voice bot to scheduler **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 Available to start immediately with a clear project timeline ensuri
$250 USD in 10 Tagen
5,6
5,6

Hello , I am a skilled professional with expertise in Python, Cloud Computing, Software Architecture, Test Automation, HTML, Node.js, Documentation, API Development, and API Integration. I understand your need for a backend "bridge" to automate booking, rescheduling, and canceling appointments in Zenbooker through Retell AI. My approach involves utilizing Node.js or Python to create a secure, well-documented middleware service that seamlessly integrates the two platforms. I will ensure reliable delivery, clear communication, and thorough documentation throughout the project. I am confident in my ability to deliver a solution that meets your requirements and provides a seamless voice booking experience. I invite you to discuss further and explore how we can collaborate to achieve your project goals. Best regards,
$140 USD in 7 Tagen
5,9
5,9

⭐Hi, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since I have significant experience in building middleware services for seamless API integrations. With a focus on automating booking processes, I ensure efficient handling of appointments and triggers to provide a smooth experience for users. My technical expertise in Node.js and Python enables me to create a secure and well-documented cloud-friendly solution using Cloudflare Workers. By connecting Retell AI to Zenbooker's API endpoints, I will ensure accurate data passing and error handling to avoid any broken states or double bookings. This project will streamline appointment management, enhancing your customer experience and operational efficiency. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim
$30 USD in 2 Tagen
5,5
5,5

Hello! I understand the importance of creating a seamless bridge between Retell AI and Zenbooker for efficient booking management. I will develop a robust backend solution that ensures smooth booking, rescheduling, and cancellations, with proper error handling and seamless interaction with the Zenbooker API. I can also recommend business rules that enhance functionality, such as technician assignments and service area limits to prevent double-booking and scheduling conflicts. Additionally, my deliverables will include a runnable middleware service, thorough setup documentation, and a proof package for all flows. Regards, Davide
$200 USD in 3 Tagen
5,2
5,2

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Retell AI - Zenbooker API Bridge . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$120 USD in 2 Tagen
5,2
5,2

Dear Hiring Manager, ➡ I will develop a secure, cloud-friendly middleware bridge connecting Retell AI with Zenbooker, enabling seamless booking, rescheduling, and cancellation of appointments via voice commands. ➡ The integration will ensure correct appointment creation, updates, and cancellations in Zenbooker, automatically triggering confirmation emails and preventing double-booking or broken states. ➡ I recommend implementing technician assignment, blackout windows, lead-time rules, and service-area limits to optimize scheduling, reduce errors, and enhance customer experience. ➡ The solution will validate addresses, select the correct service type and duration, fetch real-time availability, and pass all required customer data (name, phone, address, email, service type, notes) to Zenbooker. ➡ Robust error handling will be in place for out-of-area requests, unavailable slots, invalid info, and API failures, with safe fallback messaging. ➡ Deliverables include a runnable middleware service, concise setup documentation, and a proof package (test script/Postman collection) demonstrating all flows. ➡ I have experience building voice-bot-to-scheduler integrations and will provide a brief note on my approach and architecture. Best Regards, Mayank Saluja
$125 USD in 5 Tagen
5,6
5,6

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