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Delx Commerce — EVM Approve Amount Check
x402
Delx Commerce — EVM Approve Amount 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 whether a proposed EVM token approval amount is within policy bounds relative to a required minimum and maximum cap
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 indicating whether the proposed approval amount passes policy (within_policy: true/false), echoes back all three input amounts, provides the operation name, schema version, and an evidence object containing a SHA256 hash of the input and confirmation that no data was retained and no external calls were made.
Example use cases
DeFi agent pre-approval safety check
“I'm about to approve a DeFi contract to spend my tokens — can you verify that a proposed allowance of 2000000 raw units is within policy, given the required amount is 1500000 and the maximum allowed is 2500000?”
On-chain transaction preflight validation
“Before my agent submits an on-chain approve() transaction, run a preflight check: proposed raw amount is 500000, required minimum is 1000000, and the maximum cap is 3000000 — does it pass policy?”
Automated approval compliance in agent workflow
“As part of my automated token swap workflow, validate whether a proposed approval of 1500000 raw units meets the required threshold of 1500000 and stays under the maximum of 5000000.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-approve-amount-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs a fast, verifiable, in-memory policy check on EVM token approval amounts before submitting an on-chain transaction — particularly when you want cryptographic proof (SHA256 input hash) that the check was performed without data retention or external calls. Ideal for DeFi automation workflows where auditability and no-signup micropayment access matter.
Side effects
- Missing or malformed required fields (maximum_raw, proposed_raw, required_raw) may cause validation errors
- Non-numeric string values for raw amounts may produce unexpected results
- proposed_raw exceeding maximum_raw will return within_policy: false
- proposed_raw below required_raw will return within_policy: false
- Network or payment failure via x402 protocol may prevent the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| maximum_raw | string | Maximum Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention. |
| proposed_raw | string | Proposed Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention. |
| required_raw | string | Required Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"maximum_raw": "2500000",
"proposed_raw": "2000000",
"required_raw": "1500000",
"within_policy": true
},
"schema": "delx/util-evm-approve-amount-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "d87188aade137780468510b8b6cae7f77c249050b34d6baed135fecab217f4c4",
"external_calls": 0
},
"operation": "evm_preflight:evm_approve_amount_check"
}
}Tags
x402
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