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EVM Internal Transaction Tracer
x402
EVM Internal Transaction Tracer is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Lists all internal transactions (nested contract calls, value transfers, and call types) within an EVM transaction via Blockscout
Price / call$0.01
Success—
StatusUnknown
How this service works
List the internal transactions of an EVM transaction: the nested contract calls and their value transfers and call types, via Blockscout. Reveals the value flow and call tree that a plain receipt hides. Rate-limited upstream degrades gracefully rather than erroring.
Output
Returns a structured list of internal transactions within the given EVM transaction, including each nested contract call's call type (CALL, DELEGATECALL, STATICCALL, etc.), from/to addresses, value transferred in native currency, gas used, and the hierarchical call tree structure. Rate-limited upstream responses degrade gracefully rather than returning errors.
Example use cases
DeFi swap flow analysis
“I see this transaction on Base — 0xabc123... — supposedly a Uniswap swap, but I want to understand exactly which internal contracts were called and how much ETH moved between them. Can you trace the internal transactions for me?”
Debugging failed contract interaction
“This transaction 0xdef456... on Ethereum reverted somewhere deep in the call stack. Can you pull up all the internal calls so I can see which nested contract call caused the failure and what value was being moved?”
Security audit of suspicious tx
“There's a suspicious transaction on Arbitrum — hash 0x789abc... — that drained funds from a protocol. Can you show me the full internal call tree so I can see exactly how the attacker routed the value through nested contract calls?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/evm/internal-txWhen to prefer
Use this endpoint when you need to understand the internal execution flow of an EVM transaction beyond what the top-level receipt exposes — particularly for DeFi interactions, multi-hop token swaps, contract-to-contract calls, or security investigations. Prefer this over basic receipt lookups when value flow routing, call types (DELEGATECALL vs CALL), or nested sub-calls matter. Choose this over a block explorer UI when you need structured, machine-readable call tree data that an agent can programmatically analyze.
Side effects
- Invalid or malformed transaction hash returns an error
- Transaction hash not found on the specified network
- Upstream Blockscout rate limiting causes degraded (partial) response rather than a hard error
- Unsupported network name returns validation error
- Transaction has no internal calls (EOA-to-EOA transfer) may return empty list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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