# Payment Quotes — Timestamp Order Audit

> Payment Quotes — Timestamp Order Audit is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.0153/call, status unknown (last checked 2026-10-23).

Audits payment quote issue and expiry timestamps at a specified assessment time using an exclusive expiry boundary, without a trusted clock or issuer authentication.

## Facts

- Endpoint: POST https://www.mahastrategies.com/api/v1/verify/payment-quotes/timestamp-order-audit?utm_source=zero.xyz
- Price: $0.0153/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/payment-quotes-timestamp-order-audit-700de677
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GYZe-v_5w0gB3Wfd9w_zx

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 payment-quotes-timestamp-order-audit-700de677 -d '<json body>'
```

Example prompt: Can you audit the timestamp ordering for these 3 payment quotes — treating the data as synthetic — and check them as of 2025-06-01T12:00:00Z, using the exclusive expiry boundary rule?

## When to prefer this

Use this endpoint when you need an offline, stateless audit of payment quote timestamp ordering against a specific assessment time, without relying on a trusted clock or issuer authentication. Prefer it for public or synthetic (non-personal) quote metadata validation where the exclusive expiry boundary semantics are required and auto-renewal is not needed.

## Known failure modes

- Invalid or unparseable assessedAt timestamp returns a validation error
- Quotes array exceeds 32 items triggers a schema rejection
- nonpersonalMetadata not set to true causes request rejection
- Malformed quote objects in the array may result in per-quote audit errors or overall failure
- Assessment time outside plausible range may return unexpected ordering results

## How this service works

Check supplied quote issue and expiry times at an explicit assessment time, using an exclusive expiry boundary. No trusted clock, issuer authentication or auto-renewal. Offline typed nonpersonal metadata only. Result retention: 24 hours; minimal receipt metadata: 90 days.

## Output

Returns a timestamp order audit result for each supplied quote, indicating whether issue and expiry times are correctly ordered relative to the provided assessment time using an exclusive expiry boundary. Results are retained for 24 hours; minimal receipt metadata is kept for 90 days. No trusted clock or issuer authentication is applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "quotes": {
   "type": "array",
   "maxItems": 32,
   "minItems": 1
  },
  "dataClass": {
   "enum": [
    "public",
    "synthetic"
   ],
   "type": "string"
  },
  "assessedAt": {
   "type": "string"
  },
  "nonpersonalMetadata": {
   "type": "boolean",
   "const": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/payment-quotes-timestamp-order-audit-700de677/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.mahastrategies.com](https://www.zero.xyz/host/www.mahastrategies.com/llms.txt)