Ethereum Mainnet eth_getTransactionCount (Nonce Lookup)

x402

Ethereum Mainnet eth_getTransactionCount (Nonce Lookup) is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).

Returns the number of transactions sent from an Ethereum mainnet address (its nonce / transaction count) via eth_getTransactionCount.

Price / call$0.003

Seller volume →—

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 containing: 'ok' (boolean success flag), 'result' (integer transaction count / nonce), 'hex' (nonce as hex string or null), 'chain' (chain identifier, e.g. 'eth_mainnet'), 'method' (echoed method name 'eth_getTransactionCount'), 'service' (service identifier), and 'error' (string, only present when ok is false).

Example use cases

Pre-flight nonce check before sending ETH

“Before I broadcast my next Ethereum transaction, can you fetch the current nonce for my wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 so I can set the right transaction count?”

Verify wallet activity level

“Has this Ethereum address 0xAbCd1234567890abcd1234567890AbCd12345678 sent any transactions before? Can you get its total transaction count on mainnet?”

Monitor nonce drift in multi-signer setup

“Check the on-chain transaction count for Ethereum address 0x1234567890abcdef1234567890abcdef12345678 — I need to confirm how many transactions have been confirmed so far to make sure our nonce tracking is correct.”

Technical details

Endpoint

GEThttps://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_eth_gettransactioncount?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need the confirmed on-chain nonce (transaction count) of an Ethereum mainnet address — especially before constructing and signing a new transaction, auditing wallet activity, or verifying nonce consistency. Prefer this over general RPC gateways when you need a pay-per-call, x402-compatible interface with no API key setup.

Side effects

Invalid or malformed address (not matching ^0x[0-9a-fA-F]{40}$) returns ok:false with an error message
Network or RPC node unavailability causes error response
Missing address query parameter may return error or default behavior
Payment failure (402) if USDC payment not included or insufficient

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "hex": "0x1751",
    "chain": "ethereum",
    "method": "eth_getTransactionCount",
    "result": 5969,
    "service": "x402_eth_reads_v1.eth_mainnet_eth_gettransactioncount"
  }
}

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