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Base Reads Bundle
x402
Base Reads Bundle is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-17).
Returns ETH balance for a Base address and Ethereum mainnet network info (chain ID, block number, gas price) in a single paid API call.
Price / call$0.008
Success—
StatusUnknown
How this service works
ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.
Output
Returns a JSON object with two keyed parts: 'base_eth_getbalance' containing the native ETH balance of the queried address on Base (as both a hex string and a decimal number), and 'network_info_summary' containing Ethereum mainnet data including chain ID, current block number, gas price in wei, block gas used/limit, block timestamp, transaction count, and base fee per gas. The call only succeeds if both parts respond successfully.
Example use cases
DeFi portfolio snapshot check
“Pull the Base ETH balance for 0xAbCd1234567890abcdef1234567890abcdef1234 and grab the current Ethereum gas price and block number at the same time so I can see whether it's worth bridging right now.”
Wallet onboarding status check
“Check if wallet 0xDeadBeef1234567890abcdef1234567890abcdef has any ETH on Base and tell me the current Ethereum network conditions so I can advise the user whether to fund now.”
Agent-driven cross-chain monitoring
“Every minute, fetch the Base ETH balance for 0xFeeD1234567890abcdef1234567890abcdef5678 and the Ethereum mainnet block summary in a single call so I can log both together and alert if the balance drops below 0.01 ETH.”
Technical details
Endpoint
GEThttps://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_reads_bundle?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need both a Base address ETH balance and current Ethereum mainnet network info (gas price, block number, chain status) simultaneously and want to minimize round-trips and total cost. It costs $0.008 for both reads together, which is more efficient than two separate calls. If you only need one of the two data types, use the individual endpoints instead. Ideal for agents doing cross-chain portfolio checks, bridging decisions, or monitoring workflows that require both balance and network state in a single atomic read.
Side effects
- Invalid or malformed address (not matching ^0x[0-9a-fA-F]{40}$) causes a 400 error
- If either sub-service (Base balance or Ethereum network info) fails, the entire bundle call fails — no partial results
- Payment failure or insufficient USDC balance returns 402 Payment Required
- Network timeout or RPC node unavailability on either chain causes the whole call to fail
- Rate limiting may return 429 if called too frequently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"parts": {
"base_eth_getbalance": {
"ok": true,
"hex": "0x0",
"chain": "base",
"method": "eth_getBalance",
"result": 0,
"service": "x402_chain_reads_v1.base_eth_getbalance"
},
"network_info_summary": {
"ok": true,
"hex": {
"eth_chainId": "0x2105",
"eth_gasPrice": "0x5b8d80",
"eth_blockNumber": "0x3245954"
},
"chain": "base",
"method": "summary",
"result": {
"chain_id": 8453,
"block_number": 52713812,
"gas_price_wei": 6000000,
"block_gas_used": 33899437,
"block_gas_limit": 400000000,
"block_timestamp": 1792216971,
"block_transactions": 190,
"base_fee_per_gas_wei": 5000000
},
"service": "x402_chain_reads_v1.network_info_summary"
}
},
"service": "x402_chain_reads_v1.base_reads_bundle"
}
}Tags
x402
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