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SYNTHORA Wayback Availability
x402
SYNTHORA Wayback Availability is a paid API for AI agents from wayback.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Checks whether a given URL is archived in the Wayback Machine and returns the closest available snapshot timestamp and link
Price / call$0.001
Success—
StatusUnknown
How this service works
Check if a URL is archived in the Wayback Machine and get the closest snapshot timestamp and link. Content-history verification for agents. $0.01 USDC via x402. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
Returns a JSON object indicating whether the URL is archived (boolean), the closest available snapshot timestamp, and a direct link to that snapshot on the Wayback Machine. If no archive exists, the closest_snapshot field is null.
Example use cases
Verify deleted page still exists
“This news article link is returning a 404 — can you check if https://techcrunch.com/2019/04/15/startup-launch/ was ever captured by the Wayback Machine and get me the most recent archived version?”
Audit competitor content history
“I want to see if https://competitor.com/pricing was ever archived in the Wayback Machine — check if it has a snapshot so I can review what their old pricing looked like.”
Fact-check sourced URL in report
“Before I submit this research report, can you verify that https://www.who.int/news/item/some-page has an archived copy in the Wayback Machine so we can confirm the source was accessible?”
Technical details
Endpoint
POSThttps://wayback.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when you need to quickly verify whether a specific URL has been captured by the Internet Archive's Wayback Machine and retrieve a direct link to that snapshot. It is ideal for content history verification, fact-checking archived sources, recovering deleted pages, or auditing historical web content. Prefer it over manual Wayback Machine browsing when working in an automated agent pipeline that needs a programmatic, structured response about a URL's archival status.
Side effects
- URL not archived — returns archived: false with null closest_snapshot
- Malformed or missing URL input — request fails with validation error
- Wayback Machine API unavailable — upstream service timeout or error
- Invalid URL format passed — may return error or no results
- Network timeout when reaching archive.org — upstream dependency failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | url |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "wayback",
"result": {
"url": "https://example.com",
"archived": false,
"closest_snapshot": null
},
"provenance": {
"url": "https://archive.org/wayback/available",
"source": "Wayback Availability"
}
}
}Tags
x402
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