Youvandra Febrial
YOUVANDRA FEBRIALMalang, Indonesia · UTC+7

Builder
on-chain

Solana programs, EVM contracts, Hedera services, and lately AI agents that are trusted with money. Writing code since 2018.

Hackathons
25+ led · 18 placings
Prize money
$110k+
Block 012026
swami.web.id Swami landing page

Swami

A chat-first booking agent: ranks opening acts by fan fit on Qloo taste data, then drafts the proposal, venue hold and sponsor pitch.

Result
Qloo hackathon entry
Data
Qloo taste API
Built with
Next.js · Claude · Supabase

Live ↗Code ↗

Block 022026
pexiz · preview build Pexiz landing page

Pexiz

Watches who holds the admin keys of the protocols you provide liquidity to, and moves your vault to USDC before anyone can drain the pool.

Result
Building
Chain
Solana
Built with
Anchor · Jupiter Perps CPI · watcher

Code ↗

Block 032026
trustpool.web.id TrustPool landing page

TrustPool

Callers buy with their own money before anyone sees the call.

Result
Live product
Chain
Monad
Built with
Privy · Hono · Drizzle

Live ↗Code ↗

Block 042026
getcordon.xyz Cordon landing page

Cordon

One spending budget for a whole tree of AI agents, enforced by contracts.

Result
ETHOnline 2026 finalist
Chain
Arc · Sepolia
Built with
Solidity · x402 · ENS · MCP

Showcase ↗Code ↗

Block 052026
amw.finance AMW landing page

AMW

Mandates that keep regulated AI agents in bounds, checked before settlement.

Result
CDIR runner-up
Chain
Hedera
Built with
Contract · console · SDK · MCP

Live ↗Code ↗

Block 062026
ramalogy.xyz Ramalogy landing page

Ramalogy

Prices every Polymarket BTC market from the feed it settles on, and shows where model and market disagree.

Result
Live product
Data
Polymarket · Chainlink
Built with
Python · Next.js

Live ↗

Block 072026
sweephy.site Sweephy landing page

Sweephy

A hardware button that swaps tokens in one tap. Funds stay under an allowance; keys stay in AWS KMS.

Result
Working prototype
Chain
Hedera · SaucerSwap
Built with
ESP32 · AWS KMS · Next.js

Live ↗Code ↗

Block 082025
aegis-pro.vercel.app Aegis Protocol landing page

Aegis Protocol

Digital inheritance and scheduled payments with no custodian in the middle.

Result
1st · Hedera Origins · $15k
Chain
Hedera
Built with
EIP-712 · HCS · HTS

Live ↗Code ↗

Block 092022
devpost.com/software/art-beat Artbeat home page

Artbeat

NFT certificates of authenticity for physical art, with auctions and provenance. Co-founded.

Result
$48k across two TRON hackathons
Chain
TRON · Polygon
Traction
20 artists onboarded

Devpost ↗

Record↓
YOUVANDRA FEBRIAL Block 10 · Record · 2018–2026
  • ArtbeatTRON S3 · 3rd$40k
  • Aegis ProtocolHedera Origins · 1st$15k
  • BCateHackaTRON S5 · 3rd$10k
  • GathbookHackaTRON S7 · 3rd$10k
  • ArtbeatHackaTRON S5 · 4th$8k
  • XeatTRON S3 · 4th$7.5k
  • WhizkidsDev Circles · 1st APAC$7k
  • MaLinkHackaTRON S7 · 5th$6k
  • GathooraHedera Ascension · 3rd$4k
+ 9 more placings
  • Delphi agentGensyn · 2nd of 164$3k
  • CordonETHOnline · finalist$1k
  • XeatEVMxIdeathon · runner-up$1k
  • thirdweb trackHack The Mountains · 1st$1k
  • Cyber MaskUltra Uniq · HM$1k
  • PaanenGaruda Hacks · Best Polygon$0.5k
  • AMWCDIR · runner-up—
  • XeatGemastik · top 10 of 244—
  • InterentLocus · HM—
Total$110k+
Placings18
github.com/youvandra