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chain-address-nonce
x402
chain-address-nonce is a paid API for AI agents from chain.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Returns the transaction count (nonce) of a blockchain address across multiple EVM-compatible chains including Base, Ethereum, Arbitrum, Optimism, Polygon, and BSC.
Price / call$0.01
Success—
StatusUnknown
How this service works
Transaction count (nonce) of an address. Default chain Base; prefix another: ethereum:, arbitrum:, optimism:, polygon:, bsc:. $0.01 per call.
Output
Returns the current transaction count (nonce) integer for the queried address on the specified EVM chain. The nonce represents the total number of transactions sent from the address, useful for constructing new transactions or auditing activity.
Example use cases
Pre-transaction nonce check
“Before I send a transaction from 0xAbC123... on Arbitrum, what's the current nonce for that address so I don't get a nonce conflict?”
Multi-chain activity audit
“Has wallet 0xDeF456... ever sent any transactions on Polygon? Check its transaction count for me.”
Replay attack detection
“What's the nonce for 0x789Ghi... on Optimism? I want to make sure the transaction count matches what I expect before I proceed.”
Technical details
Endpoint
GEThttps://chain.intel.rallylive.ca/chain/nonce?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, low-cost nonce lookup across multiple EVM-compatible chains from a single API. Especially useful when building transaction construction pipelines, auditing wallet activity levels, or detecting replay vulnerabilities. The multi-chain prefix support (ethereum:, arbitrum:, optimism:, polygon:, bsc:) makes it convenient compared to managing separate RPC connections per chain. Default chain is Base.
Side effects
- Invalid or malformed address returns an error
- Unsupported chain prefix returns an error
- Network connectivity issues to the target chain RPC may cause timeouts
- Payment failure ($0.01 USDC) results in HTTP 402 and no data returned
- Address with zero transactions returns nonce of 0, which may be misinterpreted as an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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