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NexusAPI Crypto Transaction Trace
x402
NexusAPI Crypto Transaction Trace is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.088035/call, status unknown (last checked 2026-09-14).
Traces and analyzes a blockchain transaction by hash or query, returning detailed execution and call trace data
Price / call$0.088035
Success—
StatusUnknown
How this service works
Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.
Output
A structured breakdown of the transaction's execution trace, including internal calls, contract interactions, value transfers, method signatures called, gas usage per step, and any reverts or errors encountered during execution.
Example use cases
Debugging a failed DeFi transaction
“I sent a transaction to a DeFi protocol but it failed — can you trace 0xabc123def456... and tell me exactly where and why it reverted?”
Auditing contract interactions in a trade
“Can you pull the full call trace for transaction 0x789fde... and show me every internal contract call and token transfer that took place?”
Investigating a suspicious on-chain transfer
“I need to investigate this transaction hash 0x2f4a91... — can you trace it and show me all the addresses and contracts it touched?”
Technical details
Endpoint
POSThttps://nexus-api-virid.vercel.app/api/crypto/transaction/traceWhen to prefer
Use this endpoint when you need to inspect the internal execution details of a specific blockchain transaction — especially for debugging failed smart contract calls, auditing DeFi interactions, or forensic investigation of on-chain activity. Prefer this over simple transaction lookup endpoints when you need more than basic metadata (sender, receiver, value) and require the full execution trace including internal calls.
Side effects
- Invalid or malformed transaction hash returns an error or empty result
- Transaction not found on the target chain returns a not-found error
- Network congestion or RPC timeout causes slow or failed response
- Query string too vague yields incomplete or irrelevant trace data
- Payment failure in USDC on Base prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Search query or input parameter |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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