# Delx Commerce — EVM Approve Amount Check

> 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

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/evm-approve-amount-check?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-evm-approve-amount-check-69fef820
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9lonWBXUyLBJvk0JmJEek

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-commerce-evm-approve-amount-check-69fef820 -d '<json body>'
```

Example prompt: Before I sign this ERC20 approval, check if my proposed allowance of 2000000 raw units is valid — the required minimum is 1500000 and the maximum cap is 2500000.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "maximum_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Maximum Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention."
  },
  "proposed_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Proposed Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention."
  },
  "required_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Required Raw supplied to EVM Approve Amount Check; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-evm-approve-amount-check-69fef820/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)