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Delx Commerce — Base USDC Amount Check
x402
Delx Commerce — Base USDC 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 a raw USDC token amount against an expected value and maximum ceiling for EVM preflight safety on Base network
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 amount_raw matches expected_raw (matched: boolean), whether it is within maximum_raw (within_maximum: boolean), the echoed raw values, an overall pass/fail status, and cryptographic evidence including a SHA-256 hash of the input and a confirmation that no data was retained and no external calls were made.
Example use cases
Preflight USDC payment safety check
“Before my agent executes this Base USDC transfer, verify that the raw amount 500000 matches the expected 500000 and is within the maximum of 1000000 — confirm it's safe to go ahead.”
Budget ceiling enforcement for agent spending
“Check whether a raw USDC amount of 750 is within our agent's maximum spend limit of 1000 and matches the expected charge of 750 before it pays the invoice.”
Quoted price integrity verification
“The payment quote came back as raw amount 250000 — verify it matches the expected 250000 and hasn't exceeded our cap of 300000 before I authorize the transaction on Base.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/base-usdc-amount-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to perform a trustless, verifiable preflight check on a Base USDC raw token amount before submitting an EVM transaction — particularly when you need cryptographic proof (SHA-256 of inputs) that the amount was validated in-memory without retention or external calls. Prefer this over custom validation logic when operating in agentic payment pipelines that require auditable, pay-per-result verification.
Side effects
- Non-numeric or malformed raw string values may cause validation failure
- Missing required fields (amount_raw, expected_raw, maximum_raw) return an error
- Amount exceeding maximum returns within_maximum: false and status: fail
- Network or service unavailability returns HTTP 5xx
- Payment (x402) authentication failure prevents the call from executing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| amount_raw | string | Amount Raw supplied to Base USDC Amount Check; used only for this bounded calculation and processed in memory without retention. |
| maximum_raw | string | Maximum Raw supplied to Base USDC Amount Check; used only for this bounded calculation and processed in memory without retention. |
| expected_raw | string | Expected Raw supplied to Base USDC Amount Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"matched": true,
"amount_raw": "1000",
"maximum_raw": "2000",
"expected_raw": "1000",
"within_maximum": true
},
"schema": "delx/util-base-usdc-amount-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "475cde95095ef40136b0768b816113c884ea06f6e34f2f469218879405555c5a",
"external_calls": 0
},
"operation": "evm_preflight:base_usdc_amount_check"
}
}Tags
x402
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