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Delx EVM Transaction Type Classifier
x402
Delx EVM Transaction Type Classifier is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Classifies an EVM transaction type integer (e.g. 0, 1, 2) into a human-readable category such as 'legacy', 'access_list', or 'dynamic_fee'.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the classification label (e.g. 'legacy', 'access_list', 'dynamic_fee'), the echoed transaction_type integer, a status ('pass'), an operation identifier ('evm_preflight:evm_tx_type_classify'), a schema version string, and an evidence block including the SHA-256 hash of the input, a flag confirming no data was retained, and the count of external calls made (always 0 — purely in-memory computation).
Example use cases
Pre-flight EVM transaction validation
“Before I submit this transaction, can you check what type it is? The transaction_type field is set to 2 — I want to confirm it's a dynamic fee transaction.”
Debugging unknown EVM transaction type
“I'm getting a weird transaction_type integer of 1 back from the RPC — can you classify it for me so I know how to handle it?”
Agent wallet fee-type routing
“My agent is about to send an on-chain transaction with transaction_type 0 — classify that so I can route it to the right gas estimation logic.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-tx-type-classify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap, verifiable, in-memory classification of an EVM transaction type integer with no data retention and cryptographic evidence of the computation. Ideal for agent preflight checks before submitting Ethereum/EVM transactions, especially when operating in trustless or audit-sensitive environments. Prefer over custom logic when you want a pay-per-call model with no signup friction.
Side effects
- Invalid or missing transaction_type integer returns an error or unexpected classification
- Unrecognized transaction type integers outside the defined EVM spec may return an unknown/unclassified result
- Network or service downtime returns a non-200 HTTP response
- Payment failure (USDC/x402) prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| transaction_type | integer | Transaction Type supplied to EVM Tx Type Classify; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"classification": "dynamic_fee",
"transaction_type": 2
},
"schema": "delx/util-evm-tx-type-classify/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "8d7860bf2ad3e866ffa9821fc838a4e0b9a80325d1457ae15d94fe9bf16abe66",
"external_calls": 0
},
"operation": "evm_preflight:evm_tx_type_classify"
}
}Tags
x402
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