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Web3Scout

Everything you need to build in Web3. Free. Open.

APIs, tools, recipes, grants and ecosystems. All free or open source.

Popular searches

Popular APIs

Popular tools builders use to launch products.

Hyperliquid

High-performance perpetuals exchange with public API.

Trading4 recipes

Privy

Wallet onboarding and embedded wallet infrastructure for apps.

Authentication10 recipes

Solana

High-performance L1 for scalable consumer and DeFi applications.

Infrastructure3 recipes

Circle

USDC issuance, treasury, and programmable wallet APIs.

Payments1 recipe

Alchemy

Blockchain node infrastructure and developer APIs.

Infrastructure20 recipes

Immunefi

Bug bounty and audit platform for Web3 protocols.

Bug Bounty1 recipe

Browse by category

Find APIs and recipes grouped by what you're building.

Trading· 30 Payments· 11 Cards· 2 Wallets· 11 AI· 6 Security· 5 Infrastructure· 62 Analytics· 29 Gaming· 2 Identity· 7

Popular Recipes

Real starter apps, demos, and templates you can fork today.

Aave Interface

Official Aave frontend for supplying, borrowing, and monitoring positions across markets.

AdvancedWeekend Project

Agent Spend Permissions

Demo of Base Account agent spend permissions for controlled autonomous transactions.

AdvancedWeekend Project

AgentKit

Build AI agents that can own wallets, send transactions and interact with blockchain networks.

Intermediate1 Hour

AI Trading Agent Demo

LLM agent that reads market data, proposes trades, and sends alerts — forkable hackathon demo.

AdvancedWeekend Project

Anchor + Next.js Counter

Counter program template using Anchor on Solana with a Next.js frontend and Web3.js client.

Intermediate1 Hour

Automated Mass Payouts

Example application for automating payroll, rewards and bulk crypto transfers.

Intermediate1 Hour

Ecosystems

Explore chains with APIs, recipes, and grants.

Base

39 APIs · 50 recipes · 8 grants

Hyperliquid

1 APIs · 4 recipes · 2 grants

Ethereum

59 APIs · 56 recipes · 13 grants

Solana

16 APIs · 20 recipes · 8 grants

Sui

3 APIs · 4 recipes · 2 grants

Arbitrum

17 APIs · 27 recipes · 3 grants

Optimism

13 APIs · 27 recipes · 3 grants

Avalanche

4 APIs · 23 recipes · 1 grants

Builder Intel

Interesting findings from across the ecosystem.

Active Grants

Funding programs worth applying to right now.

Grant	Ecosystem	Funding	Deadline	Status
ETHGlobal	Ethereum	Prizes vary by event	Multiple events per year	Closing Soon
Base Builder Program	Base	$5K – $50K	Rolling	Active
Hyperliquid Builder Program	Hyperliquid	$10K – $100K	Rolling	Active
Arbitrum Grants	Arbitrum	$10K – $250K	Rolling	Active

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Intel Posts