Ideas (62)
Discover products, tools and startups that can be built using open-source, free and freemium APIs.
Agent Tip Jar
AI agent that monitors your Farcaster/X activity and automatically tips contributors who engage meaningfully.
- Build Time
- 4–8 weeks
- Uses
- 4 APIs
AI Bug Bounty Assistant
Finds relevant bug bounties and helps researchers understand targets.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
AI Grant Hunter
Tracks grants, hackathons and ecosystem opportunities.
- Build Time
- 3–5 weeks
- Uses
- 3 APIs
AI Portfolio Manager
AI analyzes positions, funding rates and onchain activity to generate portfolio insights.
- Build Time
- 4–8 weeks
- Uses
- 5 APIs
AI Research Analyst
Researches protocols, governance proposals and ecosystem updates.
- Build Time
- 4–8 weeks
- Uses
- 4 APIs
AI Support Bot
Docs-aware chatbot with local inference and a simple web widget.
- Build Time
- 1–2 weeks
- Uses
- 3 APIs
AI Trading Assistant
An AI-powered assistant that monitors markets and helps users execute trades.
- Build Time
- 4–8 weeks
- Uses
- 5 APIs
AI Wallet Assistant
Explains transactions, balances and wallet activity in plain English.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
AI Wallet Watcher
Monitors a list of wallets and sends you a daily digest of what smart money is doing.
- Build Time
- 3–5 weeks
- Uses
- 4 APIs
AI-vs-AI Trading Arena
AI agents compete against each other using simulated funds.
- Build Time
- 6–12 weeks
- Uses
- 4 APIs
API Changelog Feed
Follow your favorite Web3 APIs and get notified when they ship new endpoints or break changes.
- Build Time
- 2–4 weeks
- Uses
- 2 APIs
API Discovery Engine
Exactly your current project.
- Build Time
- 4–8 weeks
- Uses
- 3 APIs
Bug Bounty Platform
Coordinate security researchers, triage reports, and manage bounty payouts.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Build in Public Tracker
Follow projects building publicly across social media.
- Build Time
- 3–5 weeks
- Uses
- 2 APIs
Builder Matchmaking
Match founders with developers, designers and marketers.
- Build Time
- 4–6 weeks
- Uses
- 2 APIs
Builder Reputation Graph
Track contributions across GitHub, Farcaster, hackathons and open source.
- Build Time
- 6–10 weeks
- Uses
- 3 APIs
Builder Roast
AI roasts your GitHub profile, wallet history, and Farcaster activity — shareable for fun.
- Build Time
- 1–2 weeks
- Uses
- 3 APIs
Copy Trading Platform
Let users follow top traders and mirror positions with real-time alerts.
- Build Time
- 6–10 weeks
- Uses
- 4 APIs
Creator Membership Platform
Token-gated memberships and premium communities.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Crypto Allowance
Parents set a weekly USDC allowance for kids; kids spend via a simple wallet interface.
- Build Time
- 3–5 weeks
- Uses
- 3 APIs
Crypto Neobank
Cards, payroll, stablecoin savings and spending accounts.
- Build Time
- 8–12 weeks
- Uses
- 4 APIs
Crypto Payroll Platform
Pay remote teams using stablecoins with automated payouts and reporting.
- Build Time
- 2–4 weeks
- Uses
- 4 APIs
Crypto Pen Pals
Get matched with another builder in a different ecosystem, chat via XMTP, and share what you're building.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
Dead Project Museum
Browse and learn from failed Web3 projects — what went wrong, what was built, and what was learned.
- Build Time
- 3–5 weeks
- Uses
- 2 APIs
DeFi Portfolio Dashboard
Track wallets, protocol positions, and on-chain metrics in one view.
- Build Time
- 2–4 weeks
- Uses
- 4 APIs
Ecosystem Explorer
Discover APIs, examples, funding and projects by ecosystem.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Ecosystem Job Board
Jobs filtered by ecosystem, tech stack, and whether the company is open source.
- Build Time
- 3–5 weeks
- Uses
- 2 APIs
Fantasy Trading Game
Paper-trade competitions with live market data and wallet-based leaderboards.
- Build Time
- 3–6 weeks
- Uses
- 3 APIs
Farcaster Wrapped
Your year on Farcaster — casts, reactions, top followers, and onchain activity in a shareable card.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
Freelancer Escrow
Client deposits funds; an agent releases them when a GitHub PR is merged or a milestone is verified.
- Build Time
- 4–8 weeks
- Uses
- 3 APIs
Gas Time Machine
Tells you the cheapest time of day and day of week to transact on any chain.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
Grant Discovery Platform
Search grants, hackathons and builder opportunities across ecosystems.
- Build Time
- 3–6 weeks
- Uses
- 2 APIs
Group Trading Game
Compete with friends using virtual portfolios.
- Build Time
- 3–6 weeks
- Uses
- 3 APIs
Group Treasury
A shared crypto treasury for friend groups, gaming clans and investment clubs.
- Build Time
- 3–5 weeks
- Uses
- 3 APIs
Internet Opportunities Feed
Curated startup ideas, grants and API launches.
- Build Time
- 2–4 weeks
- Uses
- 2 APIs
NFT Marketplace
Mint, list, and trade NFTs with wallet login and indexed metadata.
- Build Time
- 4–6 weeks
- Uses
- 4 APIs
Onchain Commerce Store
Accept stablecoins and crypto payments with minimal setup.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
Onchain Fantasy Markets
Fantasy sports powered by real market performance.
- Build Time
- 6–10 weeks
- Uses
- 4 APIs
Onchain Intern
An AI agent you assign tasks to like "find me 3 grants I qualify for and draft the applications."
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Onchain Receipts
Beautiful shareable receipt cards for any onchain transaction — like Spotify Wrapped for trades.
- Build Time
- 1–3 weeks
- Uses
- 2 APIs
Onchain Resume
A portfolio generated automatically from wallets and contributions.
- Build Time
- 3–5 weeks
- Uses
- 4 APIs
Open Source Bounty Board
Earn rewards by contributing to open-source crypto projects.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Open Source Revenue Tracker
Track grants, sponsorships and revenue opportunities for open-source projects.
- Build Time
- 3–5 weeks
- Uses
- 2 APIs
Personal Crypto CFO
Track expenses, subscriptions, salaries and treasury health from wallets.
- Build Time
- 3–6 weeks
- Uses
- 4 APIs
Prediction League
Compete on prediction accuracy across sports, crypto and current events.
- Build Time
- 6–10 weeks
- Uses
- 3 APIs
Proof of Ship
Builders log what they shipped each week, verified by GitHub commits, with a public leaderboard.
- Build Time
- 2–4 weeks
- Uses
- 2 APIs
Rug History
Enter any wallet address and see every rug pull they were involved in, as victim or deployer.
- Build Time
- 4–8 weeks
- Uses
- 4 APIs
Smart Contract Risk Dashboard
Monitor protocol risk, audits and incident history.
- Build Time
- 6–10 weeks
- Uses
- 4 APIs
Smart Signer
AI reviews every transaction before you sign it and warns you in plain English what it actually does.
- Build Time
- 4–8 weeks
- Uses
- 4 APIs
SocialFi App
On-chain profiles, token-gated feeds, and embedded wallet onboarding.
- Build Time
- 6–10 weeks
- Uses
- 3 APIs
Stablecoin Payroll
Pay global teams using stablecoins with automated recurring payments.
- Build Time
- 2–4 weeks
- Uses
- 4 APIs
Startup Graveyard
Database of failed Web3 startups and lessons learned.
- Build Time
- 2–4 weeks
- Uses
- 1 API
Subscription Manager
Track and manage all recurring crypto subscriptions.
- Build Time
- 2–4 weeks
- Uses
- 3 APIs
Tip Link Generator
Create a personal tip link, share it anywhere, and receive crypto from anyone without them needing a wallet.
- Build Time
- 1–3 weeks
- Uses
- 3 APIs
Token Vesting Dashboard
Track all your vesting schedules, cliffs, and unlock dates across protocols in one view.
- Build Time
- 3–5 weeks
- Uses
- 3 APIs
Transaction Simulator
Preview what a transaction will actually do before signing.
- Build Time
- 4–8 weeks
- Uses
- 2 APIs
Virtual Card Program
Issue virtual cards backed by stablecoin treasuries for teams or consumers.
- Build Time
- 4–6 weeks
- Uses
- 4 APIs
Voice Trading
Trade, stake and manage positions entirely through voice commands.
- Build Time
- 6–10 weeks
- Uses
- 4 APIs
Wallet CRM
Track user wallet activity, balances and engagement like a traditional CRM.
- Build Time
- 1–3 weeks
- Uses
- 3 APIs
Wallet Security Score
Analyze wallets for risk factors and security practices.
- Build Time
- 3–5 weeks
- Uses
- 3 APIs
Web3 Product Hunt
Launch and discover crypto products.
- Build Time
- 4–6 weeks
- Uses
- 3 APIs
Web3 Stack Generator
Describe an app and get recommended APIs, SDKs and architecture.
- Build Time
- 3–6 weeks
- Uses
- 3 APIs