# 1gateway Base Sepolia ETH Faucet (0.1 ETH)

> 1gateway Base Sepolia ETH Faucet (0.1 ETH) is a paid API for AI agents from 1gateway.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-29).

Instantly sends 0.1 ETH to a given address on Base Sepolia testnet via a single x402-authenticated GET request, no faucet login required.

## Facts

- Endpoint: GET https://1gateway.dev/v1/testnet/base-sepolia-eth?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/1gateway-base-sepolia-eth-faucet-0-1-eth-5c91e25b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aQydHnbmyJ7Co80K2OnC7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 1gateway-base-sepolia-eth-faucet-0-1-eth-5c91e25b
```

Example prompt: Send 0.1 ETH to 0x000000000000000000000000000000000000dEaD on Base Sepolia testnet so I can run my contract tests — I need it confirmed on-chain.

## When to prefer this

Choose this endpoint when you need Base Sepolia testnet ETH instantly via a programmatic x402 call — no faucet UI, no mainnet history required, no login. Ideal for CI pipelines, automated agent wallets, or x402 integration tests where 0.1 ETH per call is sufficient. For 1 ETH per call, use the /v1/testnet/base-sepolia-eth/1 sibling endpoint. Not suitable for mainnet ETH or non-Base-Sepolia networks.

## Known failure modes

- Invalid or malformed `to` address returns 4xx before charging
- Daily per-address limit of 5 ETH (UTC) exceeded returns 4xx before charging
- Overall daily limit of 20 ETH exceeded returns 503 before charging
- Faucet out of stock returns 503 before charging
- Non-checksummed mixed-case address may be rejected

## How this service works

Use when an agent, x402 test or CI job needs Base Sepolia gas now: one x402 call, no faucet login or mainnet history. Input: to (recipient address); sends 0.1 ETH (1 ETH: /v1/testnet/base-sepolia-eth/1). Output: JSON txHash (confirmed before settling), explorerUrl, amountEth, from, to. Daily limits (UTC): 5 ETH per address (both sizes), 20 overall; checked before payment. Test ETH has no monetary value. Example: ?to=0x000000000000000000000000000000000000dEaD

## Output

A JSON object containing the confirmed on-chain transaction hash (txHash), a block explorer URL (explorerUrl), the amount sent in ETH and Wei (amountEth, amountWei), the sender address (from), the recipient address (to), block number, chain ID, network name, nonce, status, and any advisory notes — all confirmed before settlement.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "to"
     ],
     "properties": {
      "to": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "examples": [
        "0x000000000000000000000000000000000000dEaD"
       ],
       "description": "Recipient address (EIP-55 checksum if mixed case). Bad input, caps reached or out of stock → 4xx/503 before payment (not charged)"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "network",
      "chainId",
      "status",
      "blockNumber",
      "amountEth",
      "amountWei",
      "from",
      "to",
      "txHash",
      "nonce",
      "explorerUrl",
      "notes"
     ],
     "properties": {
      "to": {
       "type": "string"
      },
      "from": {
       "type": "string"
      },
      "nonce": {
       "type": "integer"
      },
      "notes": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "status": {
       "type": "string"
      },
      "txHash": {
       "type": "string"
      },
      "chainId": {
       "type": "integer"
      },
      "network": {
       "type": "string"
      },
      "amountEth": {
       "type": "string"
      },
      "amountWei": {
       "type": "string"
      },
      "blockNumber": {
       "type": "integer"
      },
      "explorerUrl": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/1gateway-base-sepolia-eth-faucet-0-1-eth-5c91e25b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 1gateway.dev](https://www.zero.xyz/host/1gateway.dev/llms.txt)