Project / 015Case study
SentimentPerps: Sentiment-Driven Perps Trading on Solana
A hackathon trading terminal that reads social sentiment, places leveraged perps on Pacifica and turns the whole loop into a competition.
- Blockchain
- Product
- Status
- Prototype
- Role
- Sole developer
- Year
- 2026
- Language
- TypeScript
- Platform
- Web
- Reading
- 3 min
- Stack
- Next.js 16
- React 19
- Tailwind CSS 4
- Zustand
- Privy
- Prisma
- PostgreSQL
- Lightweight Charts
- Pacifica
- Elfa AI
- Fuul
- Rhinofi
The problem
Crypto traders see a trending token on social media and then lose minutes switching between a sentiment feed, a chart, an exchange and a wallet. The idea was one terminal where sentiment, execution and a bit of competition share the same screen.
The system
8 components · 7 connections · 4 request flows
A Next.js app talks to Pacifica for trading, Elfa AI for sentiment and Fuul for referrals through server API routes. Privy handles wallets, and PostgreSQL stores trades, badges and progress.
- Client
- External service
- Service
- Data store
- Trust boundary
Select a component to see its role, the technology behind it and what it connects to, or follow a request through the system hop by hop.
Component reference8 components · 4 flows · as text
Components · in request order
- Client · layer 01Trading terminal
- Sentiment, charts, orders, leaderboard
- Component, hook, API route, service, Zustand store. Candlestick charts with Lightweight Charts.
- TechNext.js 16, React 19, Tailwind CSS 4, Zustand
- ToPrivy (login and signing); Rhinofi widget (deposit); API routes (hooks call routes)
- External service · layer 02Privy
- Auth and embedded wallets
- Ed25519 signing for exchange orders.
- TechPrivy
- FromTrading terminal (login and signing)
- InsideThird-party services
- External service · layer 02Rhinofi widget
- Cross-chain deposits
- TechRhinofi
- FromTrading terminal (deposit)
- InsideThird-party services
- Service · layer 02API routes
- 19 route handlers
- Trading, sentiment, referrals, leaderboard and badges.
- TechNext.js route handlers
- FromTrading terminal (hooks call routes)
- ToPacifica (orders, klines); Elfa AI (sentiment); Fuul (referrals); Database (trades and progress)
- External service · layer 03Pacifica
- Perps exchange
- Orders, take-profit and stop-loss, klines, leverage up to 20x.
- TechPacifica API
- FromAPI routes (orders, klines)
- InsideThird-party services
- External service · layer 03Elfa AI
- Social sentiment
- Trending tokens, chat and sentiment-triggered auto-trading.
- TechElfa AI
- FromAPI routes (sentiment)
- InsideThird-party services
- External service · layer 03Fuul
- Referrals
- TechFuul
- FromAPI routes (referrals)
- InsideThird-party services
- Data store · layer 03Database
- Trades, referrals, badges, progress
- Models: Trade, Referral, Badge, UserProgress, ReferralClaim.
- TechPostgreSQL, Prisma
- FromAPI routes (trades and progress)
Request flows
Scan
Trending tokens and the sentiment heatmap.
- Step 1: Trading terminal
- Step 2: API routes
- Step 3: Elfa AI
Trade
- Step 1: Trading terminal
- Step 2: API routes
- Step 3: Pacifica
Compete
Leaderboard, badges and progress.
- Step 1: Trading terminal
- Step 2: API routes
- Step 3: Database
Refer
- Step 1: Trading terminal
- Step 2: API routes
- Step 3: Fuul
Trust boundaries
- Third-party services — Privy, Rhinofi widget, Pacifica, Elfa AI, Fuul
Decisions & trade-offs
5 decisions
- D01
One core loop: scan, trade, compete
Every screen serves one of three steps. Scan sentiment, trade on Pacifica, compete on a leaderboard with badges and referrals.
- D02
Embedded wallets with Privy
Sign-in creates a wallet, and orders are signed with Ed25519 keys, so a new user can trade without installing anything.
- D03
A strict data path
Component, then hook, then API route, then external service, then Zustand store. Keys stay on the server and components stay dumb.
- D04
Sentiment can trigger trades
Elfa AI provides trending tokens, chat and a sentiment heatmap, and sentiment-triggered auto-trading closes the loop from signal to order.
- D05
Growth built in
Fuul handles referrals and the Rhinofi widget handles cross-chain deposits, so onboarding and funding are part of the product, not an afterthought.
Outcomes
- Built for the Pacifica Hackathon 2026 on DoraHacks.
- 19 API routes and 5 database models (trades, referrals, badges, progress, referral claims).
- Sentiment feed, heatmap, leveraged trading up to 20x with take-profit and stop-loss, leaderboard and badges.
RoleSole developer
View on GitHubThe write-up
3 min read
SentimentPerps was built for the Pacifica Hackathon 2026 on DoraHacks. The idea: notice a token heating up, open a leveraged position and see how you rank, all in one place.
The loop
Scan, Trade, Compete.
Scan. Elfa AI supplies trending tokens, a chat interface and a sentiment heatmap.
Trade. Orders go to the Pacifica exchange: market and limit orders, take-profit and stop-loss, up to 20x leverage, with candlestick charts from Lightweight Charts. Sentiment-triggered auto-trading can place orders from a signal.
Compete. Trades feed a leaderboard, badges and progress, and Fuul referrals add a growth loop.
Under the hood
The app is Next.js 16 with React 19, Tailwind CSS 4 and Zustand. Privy handles sign-in and embedded wallets, and orders are signed with Ed25519 keys. 19 API routes keep exchange and sentiment keys on the server, and PostgreSQL with Prisma stores five models: Trade, Referral, Badge, UserProgress and ReferralClaim. A Rhinofi widget handles cross-chain deposits.
Data always flows the same way: component, hook, API route, external service, Zustand store.
Status
A hackathon prototype. It shows how sentiment, execution and gamification can share one surface; it is not a production trading product.