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#003⭐ Featured

Circle Faucet

production

A secure, serverless multi-key testnet token claimer built on Circle APIs with password-protected default keys, round-robin API key rotation, automatic fallback, and persistent analytics powered by Vercel KV (Redis). Supports USDC/EURC distribution across 10+ networks.

Key Features

🔑 Dual Mode

User API keys (unlimited) or password-protected default faucet (1/24h)

🔄 Smart Key Rotation

Round-robin distribution across multiple API keys

🛡️ Automatic Fallback

Tries next key if one fails or hits rate limit

📊 Persistent Analytics

Vercel KV (Redis) for real-time stats that survive restarts

🌍 Multi-Network

ARC, ETH, AVAX, MATIC, SOL, ARB, UNI, BASE, OP, APTOS testnets

💵 Dual Token

USDC & EURC distribution via Circle APIs

⏱️ Rate Limiting

1 claim/wallet/network/24h (default mode), DoS protection

📈 Live Dashboard

Success rates, key usage, network distribution, uptime tracking

🛠️ Tech Stack

Node.js + ExpressCircle APIVercel Serverless FunctionsVercel KV (Redis)Vanilla JS Frontend
circleusdceurcfaucetapiweb3stablecointestnetinfrastructurevercel-kv
Category
Faucet, Web3, Infrastructure
Launched
January 20, 2026
Status
production
Supported Chains
ethereumpolygonavalanchearbitrumoptimismbasesolanaaptos