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Delx Commerce — EVM Access List Shape Check
x402
Delx Commerce — EVM Access List Shape Check 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).
Validates the structural shape of an EVM access list array, confirming addresses and storage keys conform to expected format before transaction submission.
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 with the validated and normalized access list, a boolean shape_valid flag, a status of 'pass' or 'fail', schema identifier, and an evidence block confirming no data retention, no external calls, and a SHA-256 hash of the input for auditability.
Example use cases
Preflight check before EVM transaction
“Before I broadcast this Ethereum transaction, can you validate the access list structure? It includes address 0xAbCd...1234 with two storage keys — I want to make sure the shape is correct so it doesn't get rejected.”
Debugging malformed access list entry
“My EVM transaction keeps failing and I think the access list might be malformed. Can you run a shape check on it? The entries are address 0xDEAD...BEEF with storage keys 0x0001...0001 and 0x0002...0002.”
Agent wallet transaction validation pipeline
“As part of my automated onchain workflow, validate the shape of this access list array with three address entries before my agent submits the signed transaction — I need a pass/fail result with evidence.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-access-list-shape-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call EVM access list shape validator with no signup, verifiable evidence of non-retention, and a clear pass/fail result. Ideal for agent-driven transaction pipelines on EVM chains where you want deterministic preflight validation before signing or broadcasting. Prefer this over ad-hoc client-side validation when auditability (input hash) and no-retention guarantees matter.
Side effects
- Access list array exceeds 256 items — request rejected
- Individual access list object exceeds 128 properties — rejected
- Malformed address field — shape_valid returns false
- Storage keys not in expected hex format — validation fails
- Empty access list array — may return valid with empty result
- Payment not included or insufficient USDC — 402 Payment Required
- Invalid JSON body — 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| access_list | array | Access List supplied to EVM Access List Shape Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"access_list": [
{
"address": "0x1111111111111111111111111111111111111111",
"storageKeys": [
"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
]
}
],
"shape_valid": true
},
"schema": "delx/util-evm-access-list-shape-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "c95fc9bc68ce73ff8a8fe469781d27e5342ca1ef3899ec2614304bc60ab0eff2",
"external_calls": 0
},
"operation": "evm_preflight:evm_access_list_shape_check"
}
}Tags
x402
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