Carlos Rossi

MCP & AI-agent integration developer

I design and ship Model Context Protocol servers and AI-agent integrations that run in production — not demos. Claude, ChatGPT, Cursor or Gemini can operate a real business through what I build.

Book a call See the proof ↓

Available · Remote · US/EU friendly · USD

Case study · live in production

Velora — where Claude, ChatGPT & Gemini run a real business

A chat-first, multi-agent commerce platform for businesses in Argentina. It exposes a production MCP server with ~58 tools covering the full commerce cycle — and any MCP client can operate a real business through it, with HMAC-authenticated, multi-tenant access. This is the actual product, live.

somosvelora.com
Velora's product: Claude, ChatGPT and Gemini each operating the same business over MCP — selling, reading the live catalog with prices and stock, and generating a payment link.
The same MCP server, three clients. Claude sells and sends a MercadoPago link; ChatGPT reads the live catalog; Gemini queries sales — all over the open MCP standard, against one real business.
somosvelora.com
Velora landing page: a chat-first commerce assistant answering a customer about catalog stock in real time.
Chat-first surface — the assistant answers a customer about catalog & stock in real time.
Velora on mobile: the same chat-first commerce assistant, responsive on a phone.
Mobile — same surface, responsive.

~58 tools, 14 packs

Fiscal invoicing (AFIP/ARCA), MercadoPago payments and payment links, logistics, catalog, sales, cash register, and WhatsApp messaging via the Meta Cloud API.

Multi-agent over A2A

A supervisor + specialized sub-agents communicating over the A2A protocol, with signed agent identities (Ed25519), orchestrated with Google ADK and Gemini.

Built for production

Next.js / TypeScript on Cloud Run with Postgres. Idempotent money-path mutations, per-tenant isolation, webhook signature verification, async task queues.

Talk about a similar build Visit Velora ↗

What I can build for you

Two ways to work together. Fixed scope, production-grade delivery, built by the developer of a live 58-tool MCP server.

Most requested from $1,500

Custom MCP server for your SaaS or API

A production-grade MCP server that connects Claude, ChatGPT or Cursor to your product: up to 10 tools, authentication, error handling, deployment (Cloud Run / Docker), and docs — with tool design that LLMs actually use correctly.

Auth · rate limiting · multi-tenant isolation · webhook verification

1-week engagement $400

AI agent integration audit & roadmap

A review of your product/API with a concrete plan to make it agent-ready: MCP tool design, auth model, and an implementation estimate. Delivered as a written report + one call.

Tool design · auth model · effort estimate · written report + call

Day rate from USD 50–65/h for ongoing or open-ended work.

Stack & skills

The tools behind the work — from protocol design to deployment.

Agents & protocols

Model Context Protocol (MCP) AI Agents Tool / Function Calling Multi-Agent Systems A2A Protocol Google ADK Claude API Gemini API

Build & platform

TypeScript Next.js Node.js Google Cloud Run PostgreSQL API Integration Webhooks

Integrations shipped

WhatsApp Business (Meta Cloud API) MercadoPago payments AFIP / ARCA invoicing Logistics / shipping

How I work

Production-grade, not demos Auth & rate limiting Multi-tenant isolation Idempotent money paths Fluent English US time-zone friendly

Let's build

Have an API or product you want agents to run?

Tell me what you're connecting and to which client. I'll come back with a concrete plan and an estimate.

Book a 30-min call

Available · Remote · US/EU · USD