# SiteCheck Web Intel – Wayback CDX Snapshot Lookup

> SiteCheck Web Intel – Wayback CDX Snapshot Lookup is a paid API for AI agents from api.webintel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-25).

Retrieves archived web snapshots for a URL or domain from the Internet Archive's CDX API, returning timestamps, MIME types, status codes, and direct archive links.

## Facts

- Endpoint: GET https://api.webintel-api.workers.dev/api/search/wayback-cdx?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-web-intel-wayback-cdx-snapshot-lookup-dc19f8a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pSnMOT0N76NQQqReOhz7v

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 sitecheck-web-intel-wayback-cdx-snapshot-lookup-dc19f8a7
```

Example prompt: Can you pull up the Wayback Machine archive history for example.com and show me the 5 most recent snapshots — I want to see the timestamps, status codes, and direct archive links?

## When to prefer this

Use this endpoint when you need structured CDX metadata about archived snapshots of a URL or domain — especially for OSINT investigations, historical content verification, SEO audits, or security research — without needing a signup or API key. Prefer it over direct Wayback Machine scraping because it returns clean JSON with parsed timestamps, status codes, and direct archive links. It pays per call (no subscription), making it ideal for occasional or agent-driven lookups.

## Known failure modes

- URL has no Wayback Machine snapshots (count returns 0, empty snapshots array)
- Invalid or malformed URL input causing a query error
- Limit parameter outside the 1–50 range may be rejected or clamped
- Internet Archive CDX API downtime or rate limiting causing upstream failure
- Network timeout if the CDX service is slow to respond

## How this service works

Internet Archive Wayback Machine CDX index: archived snapshots of a URL or domain (timestamp, original URL, MIME type, HTTP status, length) with a link to each capture. Public, no key; the index lists captures, not page text.

## Output

Returns a JSON object containing the queried URL, total snapshot count, the CDX source URL, the retrieval timestamp, and an array of snapshot objects each with: original URL, archive timestamp, direct Wayback Machine archive URL, archived datetime, HTTP status code, MIME type, and content digest hash.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "URL or domain to look up, e.g. example.com or https://example.com/page"
      },
      "limit": {
       "type": "string",
       "description": "How many snapshots, 1 to 50 (default 10)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "example.com",
  "count": 3,
  "source": "https://web.archive.org/cdx/search/cdx",
  "checkedAt": "2026-10-23T09:38:40.499Z",
  "snapshots": [
   {
    "digest": "HT2DYGA5UKZCPBSFVCV3JOBXGW2G5UUA",
    "length": 1792,
    "mimeType": "text/html",
    "original": "http://example.com:80/",
    "timestamp": "20020120142510",
    "archiveUrl": "https://web.archive.org/web/20020120142510/http://example.com:80/",
    "archivedAt": "2002-01-20T14:25:10Z",
    "statusCode": 200
   },
   {
    "digest": "UY3I2DT2AMWAY6DECFCFYMT5ZOTFHUCH",
    "length": 481,
    "mimeType": "text/html",
    "original": "http://www.example.com:80/",
    "timestamp": "20020328012821",
    "archiveUrl": "https://web.archive.org/web/20020328012821/http://www.example.com:80/",
    "archivedAt": "2002-03-28T01:28:21Z",
    "statusCode": 200
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-web-intel-wayback-cdx-snapshot-lookup-dc19f8a7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.webintel-api.workers.dev](https://www.zero.xyz/host/api.webintel-api.workers.dev/llms.txt)