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P.E.X.A — screenshot 1
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P.E.X.A — screenshot 3
P.E.X.A — screenshot 4

P.E.X.A

Event

Agents on Open Rails Hackathon

Team

1 member
  • CH

    Chris

    Owner

Overview

WHAT WE BUILT Pexa is an AI financial agent on Celo. You talk to it in chat, and it has its own wallet. It sends and receives dollar stablecoins, converts to USAT, understands how you invest, and researches before you spend. When it needs information it doesn't own (social data, Google Maps, a browser), it buys it through Buy (x402), per request, from your own wallet. Your wallet signs each payment and every payment leaves a receipt on Celo.

WHO IT'S FOR Anyone who spends money online with sellers they've never met: an Instagram or WhatsApp seller, a shop found in a group chat, a marketplace listing. Today you have to guess whether the seller is real, whether a real shop is nearby, and whether the price fits your budget. Pexa also suits anyone who wants one agent for their stablecoin money instead of five apps.

WHAT IT DOES You tell it what you want, your budget and your city, for example "Find me the best laptop under $800 near me", and approve one small budget. Pexa then:

  • Finds real stores near you on Google Maps, with rating, review count, phone, open-now and distance.
  • Rates online sellers on Instagram, TikTok and X for trust, and flags real warning signs.
  • Checks every price against your budget, in the same currency only. It never guesses an exchange rate.
  • Reads any product link, using a rented Buy browser for shops that block bots.
  • Never pays a seller or a store. Paying stays with you, behind a Confirm card, because crypto can't be reversed.

It is also a full agent: send to a @username, receive from other chains, convert to USAT, deposit into Aave on Celo after you confirm, and watch prices and pools for you.

HOW IT USES BUY

  • It buys Google Maps search, social data, LinkedIn search and a rented browser, per request.
  • Each purchase comes from an allow-list of ten services under a hard cap, and your wallet signs it.
  • When a service fails after you sign, Pexa checks Celo to see whether the payment settled, instead of guessing.

PROOF

  • As of Nov 7, 43 paid Buy purchases, all 43 verified on Celo mainnet, $0.46 total, including a real Google Maps search. Anyone can run: npm run buy:report -- --verify
  • Registered on-chain as an ERC-8004 agent (#9974).
  • 1,464 unit tests and a live evaluation of 69 real conversations.
  • Live: pexaapp.xyz
  • Code: github.com/nofazechris/pexa