# Tokenguard Wayback Machine URL Availability Lookup

> Tokenguard Wayback Machine URL Availability Lookup is a paid API for AI agents from eltociear-tokenguard.hf.space, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Checks if a given URL has an archived snapshot on the Wayback Machine and returns the earliest or nearest snapshot URL and timestamp

## Facts

- Endpoint: POST https://eltociear-tokenguard.hf.space/data/wayback
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tokenguard-wayback-machine-url-availability-lookup-d12c1bdc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SImfLHqyawFD1qx8_mw8Y

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 tokenguard-wayback-machine-url-availability-lookup-d12c1bdc -d '<json body>'
```

Example prompt: Can you check if https://example.com has an archived snapshot on the Wayback Machine and give me the link to it?

## When to prefer this

Use this endpoint when you need to verify whether a specific URL has been archived by the Internet Archive's Wayback Machine and retrieve the snapshot link, especially for checking deleted or changed pages. Prefer this over direct Wayback Machine API calls when you need a pay-per-call micropayment model via x402 on Base.

## Known failure modes

- URL has never been crawled by the Wayback Machine — returns available: false with no snapshot_url
- Malformed or missing URL input — returns 4xx error
- Wayback Machine API is temporarily unavailable — service timeout or 5xx error
- URL is in an exclusion list (robots.txt blocked) — may return unavailable even if archived

## How this service works

Internet Archive lookup: whether a snapshot of a URL exists and its closest capture to a given date — read pages that are now dead

## Output

Returns a JSON object with a boolean availability flag, the snapshot timestamp (e.g. '20200101000000'), the original URL, and a full Wayback Machine snapshot URL pointing to archive.org if an archived version exists.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "URL to look up"
  },
  "timestamp": {
   "type": "string",
   "description": "Target date as YYYYMMDD (optional)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com",
  "available": true,
  "timestamp": "20200101000000",
  "snapshot_url": "http://web.archive.org/web/20200101000000/http://example.com/"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tokenguard-wayback-machine-url-availability-lookup-d12c1bdc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eltociear-tokenguard.hf.space](https://www.zero.xyz/host/eltociear-tokenguard.hf.space/llms.txt)