# SiteCheck Web Archive Lookup

> SiteCheck Web Archive Lookup is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-16).

Retrieves historical snapshots and capture history for a public URL from the Internet Archive Wayback Machine

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/web/archive?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-web-archive-lookup-186fb743
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EJxlOAJnuzFv5lgJ1-2JU

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-archive-lookup-186fb743
```

Example prompt: Can you pull up the archive history for https://example.com and show me all snapshots captured between 2010-01-01 and 2015-12-31?

## When to prefer this

Use this endpoint when you need to retrieve historical web archive data from the Internet Archive Wayback Machine for a specific URL — including listing all captures over time, finding the closest snapshot to a given date, or filtering captures within a date range. Prefer this over general web scraping tools when the target page no longer exists or has changed, and you need verified historical versions. It is purpose-built for archival research, not live page retrieval.

## Known failure modes

- URL has never been archived — returns empty captures array or no closest snapshot
- Invalid or malformed URL input — request rejected
- URL is not publicly accessible or uses non-http(s) scheme — error returned
- Date parameters in wrong format (not YYYY-MM-DD) — parsing failure
- Internet Archive API unavailable or rate-limited — upstream timeout or error
- Very recent URLs may have no captures yet

## How this service works

Wayback Machine snapshots of a public URL: the capture closest to a date, the list of captures in a date range (one per day, max 500), first and last capture, and mode=diff, which compares the latest snapshot's text with the live page (added and removed lines, max 200 each). Diff is line-based and does not parse JavaScript-rendered pages.

## Output

Returns a JSON object containing the first and last capture dates, total capture count, the closest snapshot to a requested date (with its Wayback Machine URL, HTTP status, and timestamp), a list of individual capture entries (each with URL, date, status, and timestamp), the data source attribution, and a checkedAt timestamp.

## 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": {
      "to": {
       "type": "string",
       "description": "Captures up to this date, YYYY-MM-DD (optional)"
      },
      "url": {
       "type": "string",
       "description": "Public http(s) URL to look up"
      },
      "date": {
       "type": "string",
       "description": "Closest snapshot to this date, YYYY-MM-DD (optional)"
      },
      "from": {
       "type": "string",
       "description": "Captures from this date, YYYY-MM-DD (optional)"
      },
      "mode": {
       "type": "string",
       "description": "captures (default) or diff"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com/",
  "last": "2007-08-14",
  "first": "2002-01-20",
  "source": "Internet Archive Wayback Machine (archive.org, availability and CDX APIs) — Internet Archive Terms of Use",
  "closest": {
   "url": "https://web.archive.org/web/20200101231047/https://example.com/",
   "status": "200",
   "timestamp": "20200101231047"
  },
  "captures": [
   {
    "url": "https://web.archive.org/web/20020120142510/https://example.com/",
    "date": "2002-01-20",
    "status": "200",
    "timestamp": "20020120142510"
   },
   {
    "url": "https://web.archive.org/web/20020328012821/https://example.com/",
    "date": "2002-03-28",
    "status": "200",
    "timestamp": "20020328012821"
   },
   {
    "url": "https://web.archive.org/web/20020524041628/https://example.com/",
    "date": "2002-05-24",
    "status": "200",
    "timestamp": "20020524041628"
   }
  ],
  "checkedAt": "2026-10-15T18:26:19.430Z",
  "captureCount": 500
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-web-archive-lookup-186fb743/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)