Discover / factstamp.agentrails.workers.dev

factstamp.agentrails.workers.dev

□ No challenge detected

Check a citation before repeating it. Give a DOI, an arXiv ID or a paper title; the answer says whether the work exists, what it is (title, authors, year, container) and whether it has been retracted. A title that is absent from both Crossref and arXiv returns not_found, and a near title match is never reported as verified. Cited to the source record with its retrieval time. Verdicts: verified, ambiguous, retracted, not_found, unknown.

Listed price
$0.02
Challenge detected
0 of the last check
Last checked
14 Oct, 21:21 UTC
In our index since
14 Oct 2026

Endpoint

curl -i https://factstamp.agentrails.workers.dev/citation
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/factstamp.agentrails.workers.dev

Recent checks

14 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.14 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
14 Oct, 21:21 UTCNo challenge detected405393ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 14 Oct, 21:21 UTC, we detected no payment challenge.

What price is recorded for factstamp.agentrails.workers.dev?

Its listed price is $0.02.

What payment terms does factstamp.agentrails.workers.dev advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is factstamp.agentrails.workers.dev listed?

In x402 Bazaar. Superstables first indexed it on 14 Oct 2026.

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