Hey there,
I'm Preethesh Carvalho

A multi-agent operating system that takes a business from idea to live, tested and marketed product. Local document grounding keeps private source material close, while specialized Gemini agents coordinate research, legal, brand, build, sales and support.

• Gemma 4 local vault ingests documents, performs OCR and grounds agents in real business numbers.
• Seven specialized agents work in parallel with conflict resolution before changes ship.
• Plain-language Antigravity edits continuously update the live product while team context stays permissioned.

A natural-language package manager and error watcher for Linux. Novato translates what users want into distro-aware commands, explains failures in plain English, and keeps working with an offline fallback when the internet is unavailable.

• Intent-to-command search detects the distro, ranks packages and shows the exact command before execution.
• A silent shell watcher speaks only when a command fails and offers a practical fix.
• Basic rules, local llamafile and online Groq backends form an automatic four-mode fallback chain.

An end-to-end IoT bell automation system pairing an ESP01S and relay module with a Flutter Windows desktop app, replacing manual bell operation with schedule-driven, remotely controlled ringing.

• Flutter desktop app packaged for Windows with MSIX for simple campus deployment.
• Firebase Realtime Database dispatches bell commands to the ESP01S over Wi-Fi with sub-second latency.
• ESP01S + relay hardware handles the physical bell trigger reliably from scheduled or remote commands.

An autonomous escrow platform where three competing AI agents negotiate deals through a weighted optimizer, while an ARC-4 smart contract handles fund locking and release on Algorand — no human intermediary required.

• Three competing agents negotiate deals via a weighted optimizer with autonomous on-chain settlement.
• Self-hosted LLM inference stack (vLLM + ROCm) with a 3-tier fallback chain for reliability.
• ARC-4 smart contract handles trustless fund locking and release on Algorand.

A marketplace connecting hiring, work approval, compliance, FX and escrow settlement in one workflow. Companies and freelancers work in local currency, while separate ledgers track approved work, payment settlement and business records.

• Hyperledger Fabric records work approvals, Algorand handles escrow settlement, and PostgreSQL keeps workflow and accounting records.
• AI assists with document intake, proposal ranking and agreements; people select freelancers, accept terms and approve deliveries.
• The end-to-end demo follows two milestone escrows through Fabric approval, Algorand TestNet release and INR reconciliation.

A team of specialist agents negotiates how to split a travel budget across journeys, stays, food and activities. A mediator settles trade-offs, the traveller approves the plan, and each agent gets a merchant-scoped credential capped at its own share.

• Specialists negotiate affordable options, with mediation bounded to five rounds and a one-shot approval tied to the exact plan.
• Prava sandbox evidence demonstrates four scoped credentials and an over-budget refusal; no merchant purchase was completed.
• A live SSE dashboard, Duffel test flight search and Geoapify day planning connect negotiation to a mapped itinerary.