TheCallAgent

The starting point

TheCallAgent is the AI agent offering run by Odilon's company. It started in 2025 as a platform connecting a voice agent to a small business's tools, then branched out by trade: a voice receptionist for restaurants, an inbound and outbound agent for estate agencies, and a WhatsApp agent for a holiday-rental concierge service. The thecallagent.com website presents the offering and embeds a conversational agent of its own.

The problem

A small business loses customers every time nobody can answer: during a restaurant's service, outside an agency's opening hours, at night for a holiday rental. Human reception is expensive for short, repetitive requests, and online tools do not reach people who would rather call or write on WhatsApp. A mistake is paid for immediately: a table given away twice, an access code sent to the wrong person, a sales call made without consent.

The answer

Each agent answers in the customer's own channel and genuinely acts: it checks availability, records or cancels a booking, qualifies a request, offers a viewing, sends a document or a confirmation SMS, and alerts a person when needed. Business rules live in the application and in the database, never in the prompt alone: no double booking, no outbound call without valid consent, no access code without a verified reservation. Sensitive actions are still approved by a human.

• On the phone, for restaurants: real availability, booking, cancellation and confirmation SMS, 24/7 in French
• On the phone, for estate agencies: qualification, viewing appointments, call-backs restricted to consenting contacts and to legal calling hours
• On WhatsApp: an agent for a concierge service's guests, by message or by voice call, with reservation checks, a welcome pack, document delivery and owner alerts
• On a website: a conversational agent built into the marketing site, which presents the offering and collects demo requests
• After the conversation: analysis of the exchange and suggested actions in the customer's tools (calendar, CRM), approved by a person
• Real-time dashboard, self-service sign-up and usage-based billing for the restaurant vertical

My role

Product and architecture design, development by steering AI coding agents (plans, reviews, tests), deployment, operations, commercial positioning and the marketing website.

Where the project stands

The restaurant vertical is live, with a subscription and usage-based billing. The real-estate vertical is built and tested. The original platform serves as the reference for voice configuration, and thecallagent.com presents the offering.

• First customers for the restaurant vertical
• Launching the real-estate vertical
• A vertical for professional practices, at the scoping stage

The project’s tools

Voice and telephony

Retell AI, Twilio (calls, SMS), ElevenLabs

Messaging

WhatsApp Business via Twilio

Applications

Next.js, React, FastAPI, Supabase (Postgres)

AI

Claude, Gemini

Payments and hosting

Stripe, Railway

Links

Website ↗

Restaurant app ↗