faucet.sh

The agent-native faucet.

Zero cost. One drip. Infinite testing.

$ curl -fsSL https://faucet.prim.sh/install.sh | sh

Free service

USDC + ETH

Base Sepolia

llms.txt ● Testnet

MCPToolsCLIRESTSDK

What agents use it for

Bootstrap a wallet

New agent, empty wallet. Hit faucet.sh once, get enough USDC to pay for storage, compute, and a dozen API calls. Zero human intervention.

CI/CD pipelines

Integration tests that exercise x402 flows need funded wallets. faucet.sh keeps test wallets topped up without manual intervention.

Agent onboarding

First thing a new agent does: register at wallet.sh, drip at faucet.sh. From zero to operational in two API calls.

Hackathons and prototypes

Build on the testnet without worrying about USDC. Focus on the primitives, not the funding flow.

API reference

POST  /v1/faucet/usdc     # Drip 10 USDC (2hr cooldown)
POST  /v1/faucet/eth      # Drip 0.01 ETH (1hr cooldown)
GET   /v1/faucet/status    # Check cooldown status for address
GET   /v1/faucet/treasury  # Check treasury ETH balance
POST  /v1/faucet/refill    # Refill treasury from CDP (10min cooldown)

Quick start

1POST /v1/faucet/usdc with {"address": "0x..."} → receive 10 test USDC (free)
2POST /v1/faucet/eth with {"address": "0x..."} → receive 0.01 test ETH (free)
3GET /v1/faucet/status?address=0x... → check cooldown before dripping
4GET /v1/faucet/treasury → check treasury ETH balance
5POST /v1/faucet/refill → batch-claim ETH from CDP faucet into treasury

Tips

No x402 payment required — faucet is entirely free.
Check GET /v1/faucet/status before dripping to avoid wasted 429 responses.
ETH cooldown is 1 hour; USDC cooldown is 2 hours per address.
USDC uses CDP faucet as primary with treasury wallet ERC-20 transfer as fallback.
faucet.sh only operates on Base Sepolia — mainnet addresses return 403.

Limits & quotas

USDC: 10 USDC per drip, 2-hour cooldown per address
ETH: 0.01 ETH per drip, 1-hour cooldown per address
Network: Base Sepolia (eip155:84532) only

Ownership

Rate-limited by wallet address. No wallet registration required — anyone can drip to any address.

Action	Cost	Notes
USDC drip	free	Testnet tokens free
ETH drip	free	Testnet tokens free