# AgentWholesale HTTPS Page Change Check

> AgentWholesale HTTPS Page Change Check is a paid API for AI agents from agentwholesale.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Checks whether up to 5 watched text fields on a public HTTPS page are still present (unchanged), returning a definitive unchanged or requires_fallback status.

## Facts

- Endpoint: POST https://agentwholesale.vercel.app/api/v1/change-check
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentwholesale-https-page-change-check-2cd403b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Figt7PgHpKEHBArHM3l2z

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 agentwholesale-https-page-change-check-2cd403b9 -d '<json body>'
```

Example prompt: Check whether the text 'Free shipping on orders over $50' is still present on https://example-store.com/shipping-policy — use that as the baseline for the 'shipping_threshold' field and tell me if anything has changed.

## When to prefer this

Choose this endpoint when you need a low-cost ($0.002/call), agent-ready way to verify whether specific text snippets on a public HTTPS page still match saved baselines — especially for monitoring pricing, availability, policy text, or status pages. Prefer it over full-page diff tools when you only care about 1-5 specific fields and want a binary unchanged/requires_fallback answer without noisy full-page comparison.

## Known failure modes

- Page is not publicly accessible or returns non-200 status — may trigger requires_fallback
- HTTPS requirement not met (HTTP-only URLs rejected)
- Baseline text not found on initial check due to dynamic/JS-rendered content
- More than 5 fields supplied — rejected by schema validation
- Network timeout fetching the target page — requires_fallback returned
- Ambiguous or partial match may yield requires_fallback conservatively

## How this service works

Cheap agent-ready change check for one HTTPS page. Supply 1-5 watched field baselines; returns unchanged only when every enrolled baseline is still provably present, otherwise requires_fallback without falsely claiming a change.

## Output

Returns a status indicating either 'unchanged' (all enrolled baseline fields are still provably present on the page) or 'requires_fallback' (one or more baseline texts could not be confirmed, indicating a possible change or unverifiable state). Does not falsely claim a change occurred.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "url",
      "fields"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Public HTTPS page to check."
      },
      "fields": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "field",
         "baselineText"
        ],
        "properties": {
         "field": {
          "type": "string"
         },
         "baselineText": {
          "type": "string"
         }
        }
       },
       "maxItems": 5,
       "minItems": 1
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentwholesale-https-page-change-check-2cd403b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentwholesale.vercel.app](https://www.zero.xyz/host/agentwholesale.vercel.app/llms.txt)