generated: '2026-08-04'
method: searched
source: https://lemoncash.mintlify.app/testing/faucets
docs:
  faucets: https://lemoncash.mintlify.app/testing/faucets
  environments: https://lemoncash.mintlify.app/testing/changing-dev-environment
model: testnet-chains
model_note: >-
  Lemon Cash ships no test-mode API keys and no hosted mock API — there is no HTTP API.
  The sandbox is a chain-level separation: a Mini App in development mode points at a
  testnet chain id and is funded from public testnet faucets. No Lemon-issued test
  values, test cards or magic identifiers are published.
environment_switching:
  how: Set the URL your Mini App connects to from the Mini App details screen in the
    Lemon Cash app.
  availability: Only available for Mini Apps in development mode.
  x-evidence: https://lemoncash.mintlify.app/testing/changing-dev-environment
test_networks:
  selected_by: the `chainId` parameter on authenticate, deposit, withdraw and callSmartContract
  chains:
  - {name: ARBITRUM_SEPOLIA, chain_id: 421614}
  - {name: AVALANCHE_FUJI, chain_id: 43113}
  - {name: BASE_SEPOLIA, chain_id: 84532}
  - {name: BNB_SMART_CHAIN_TESTNET, chain_id: 97}
  - {name: CELO_SEPOLIA, chain_id: 11142220}
  - {name: ETH_HOODI, chain_id: 560048}
  - {name: ETH_SEPOLIA, chain_id: 11155111}
  - {name: GNOSIS_CHIADO_TESTNET, chain_id: 10200}
  - {name: OPTIMISM_SEPOLIA, chain_id: 11155420}
  - {name: POLYGON_AMOY, chain_id: 80002}
  - {name: ROOTSTOCK_TESTNET, chain_id: 31}
  docs_default: >-
    Every code sample in the quickstart and the authenticate reference uses
    ChainId.POLYGON_AMOY (80002), the de-facto documented default test chain.
faucets:
- name: Circle USDC Faucet
  url: https://faucet.circle.com/
  provides: 10 testnet USDC per hour
  networks: [Ethereum Sepolia, Polygon Amoy, Arbitrum Sepolia, and other supported networks]
  first_party: false
- name: Alchemy Faucets
  url: https://www.alchemy.com/faucets
  provides: native testnet tokens (ETH, POL, etc.)
  first_party: false
guardrails:
- rule: Deposits are blocked when the Mini App is connected to a testnet.
  reason: >-
    Otherwise a deposit would debit real money from the Lemon app and credit test
    tokens in the Mini App wallet.
  workaround: Send testnet tokens from a faucet to the Mini App wallet address instead.
  x-evidence: https://lemoncash.mintlify.app/functions/deposit
- rule: >-
    transferMoney destinations (`paymentId` — CBU/CVU in Argentina, CCI in Peru) must
    be whitelisted by Lemon before use, in any environment.
  workaround: Contact the Lemon team before changing or adding a paymentId.
  x-evidence: https://lemoncash.mintlify.app/functions/transfer-money
not_published:
- test-mode vs live-mode API key prefixes (no API keys exist)
- Lemon-issued test wallets, magic addresses or simulator values
- test clocks / time simulation
- fixture or event-trigger tooling
- a self-serve developer dashboard (a Mini App ID must be requested from the Lemon team)
x-evidence:
  fetched: '2026-08-04'
  urls:
  - {url: 'https://lemoncash.mintlify.app/testing/faucets', http_status: 200}
  - {url: 'https://lemoncash.mintlify.app/testing/changing-dev-environment', http_status: 200}
  - {url: 'https://lemoncash.mintlify.app/types/types', http_status: 200}