# Delx EVM Infinite Approval Flag

> Delx EVM Infinite Approval Flag is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Checks whether an EVM token approval value is infinite (or near-infinite) by comparing it against a configurable threshold

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/evm-infinite-approval-flag
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-evm-infinite-approval-flag-18cc31df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VZKfWk3XkJGyjlY_guaVT

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-evm-infinite-approval-flag-18cc31df -d '<json body>'
```

Example prompt: Check if this EVM token approval amount is infinite or near-infinite — the approval raw value is 115792089237316195423570985008687907853269984665640564039457584007913129639935 and the threshold raw is 115792089237316195423570985008687907853269984665640564039457584007913129000000.

## When to prefer this

Use this endpoint when you need a fast, stateless, in-memory check of whether a raw EVM token approval value is effectively unlimited (infinite or near-infinite) relative to a given threshold — particularly for pre-transaction preflight checks or security audits. It is preferable to rolling your own big-integer comparison because it provides an evidence trail (SHA-256 of input, no-retention guarantee, zero external calls) suited for governed agent workflows.

## Known failure modes

- Invalid or non-numeric approval_raw or threshold_raw values may cause a parse error
- Strings exceeding the 8192-character maxLength will be rejected
- Missing required fields returns a validation error
- Very large numeric strings that cannot be parsed as big integers may fail

## How this service works

EVM Infinite Approval Flag: EVM Infinite Approval Flag flags an approval at or near a caller-supplied maximum uint threshold from bounded caller-supplied values without an external provider. Call EVM Infinite Approval Flag before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Infinite Approval Flag as versioned determini…

## Output

Returns a JSON object with a boolean 'infinite_or_near' field indicating whether the approval meets or exceeds the threshold, plus the schema version, operation name, advisory status, and an evidence block containing a SHA-256 hash of the input and confirmation that no data is retained and no external calls were made.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "approval_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Approval Raw supplied to EVM Infinite Approval Flag; used only for this bounded calculation and processed in memory without retention."
  },
  "threshold_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Threshold Raw supplied to EVM Infinite Approval Flag; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "approval_raw": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
   "threshold_raw": "115792089237316195423570985008687907853269984665640564039457584007913129000000",
   "infinite_or_near": true
  },
  "schema": "delx/util-evm-infinite-approval-flag/v1",
  "status": "advisory",
  "evidence": {
   "retained": false,
   "input_sha256": "c407baee3569bcaed1d4681415cb497857f628ee6ff678daf4c9adbba50ae87d",
   "external_calls": 0
  },
  "operation": "evm_preflight:evm_infinite_approval_flag"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-evm-infinite-approval-flag-18cc31df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)