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CortexCloud On-Chain Transaction History Lookup
x402
CortexCloud On-Chain Transaction History Lookup is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-10).
Retrieves the transaction history for a blockchain address or account via a pay-per-call API settled in USDC on Base.
Price / call$0.004
Success—
StatusUnknown
How this service works
One pay-per-call API for AI agents: optimization, AI, research, on-chain data, and automation — all settled in USDC on Base via x402. Discover via MCP and Bazaar, estimate free, pay per call. No API keys, no signup.
Output
Returns a JSON object containing aggregated on-chain transaction history for the queried address, including transaction records, timestamps, amounts, and counterparty addresses as available from the underlying blockchain data sources.
Example use cases
Audit wallet activity for compliance
“Can you pull the complete transaction history for the wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e? I need to audit all past on-chain activity for compliance review.”
Track DeFi portfolio transactions
“Fetch all on-chain transactions for my DeFi wallet 0x1234abcd...5678 so I can see every swap, deposit, and transfer that's happened.”
Investigate suspicious address activity
“Look up the transaction history for this address 0xDeAdBeEf...9999 — I want to know every transaction it's ever made on-chain.”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/v1/aggregate/tx-history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a simple, no-signup, pay-per-call way to retrieve aggregated on-chain transaction history for a blockchain address, especially when building AI agent workflows that require on-chain data without managing API keys or subscriptions. Particularly useful for Base/EVM-compatible address lookups settled in USDC.
Side effects
- Invalid or malformed wallet address returns an error
- Address with no transaction history returns an empty result set
- Network congestion or RPC unavailability may cause timeout
- Insufficient USDC balance for x402 payment results in 402 Payment Required response
- Unsupported chain or address format may return a 400 or empty response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — | |
| output | — |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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