Discover / agents.factstamp.dev

FactStamp

■ Challenge detected

Verify whether a legal entity exists and is currently registered, from open primary registers: the GLEIF LEI index, US SEC EDGAR and the Australian Business Register (ABN, ACN, GST, status). Relevant wherever a company is named in a contract, invoice or filing, and for resolving an identifier (ABN, ACN, LEI, CIK) for a company known only by name. Returns found, ambiguous, not_found or unknown, cited to the register with its retrieval time. A near name match is never reported as a match.

Listed price
$0.1
Challenge detected
2 of the last 5 checks
Median response
277 ms
Last checked
17 Oct, 07:50 UTC
In our index since
10 Oct 2026

Endpoint

curl -i https://agents.factstamp.dev/entity
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
4 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://agents.factstamp.dev

  • POST/entity$0.1Verify whether a legal entity exists and is currently registered, from open primary registers: the GLEIF LEI index, US SEC EDGAR and the Australian Business Register (ABN, ACN, GST, status). Relevant wherever a company is named in a contract, invoice or filing, and for resolving an identifier (ABN, ACN, LEI, CIK) for a company known only by name. Returns found, ambiguous, not_found or unknown, cited to the register with its retrieval time. A near name match is never reported as a match.
  • POST/entity-file$0.4381One company in full at the point of signing, onboarding, paying or acquiring — a company check by company number or name across the company registers. Identity and standing, registered office, SIC and prior names, the filing position, a sanctions screen across six lists, plus the ownership the registers publish (persons with significant control where published; parent relationships where a company has an LEI; beneficial ownership not public in nearly every country we cover). Not a KYB provider.
  • POST/sanctions$0.05Sanctions screening of a name against OFAC SDN and Non-SDN, the UN consolidated list, the EU Financial Sanctions File, the UK Sanctions List and Australia's DFAT list. Relevant before transacting with a party, and wherever a sanctions check must be evidenced. Returns listed, mismatch, not_found or unknown, with the matched entry's reference and each list's dates. A near name is never the same party; a list not consulted is named as not consulted. Not advice, not a legal determination.
  • POST/vat$0.05An EU VAT number check — VAT validity, and the VAT registration behind it. Relevant wherever a VAT number is being relied on or cited: the check reads the official VIES service (European Commission), keyless, and returns valid, invalid or unknown — an outage is never reported as invalid — with the member state, the register's own request date, and the trader identity only where that member state discloses it. GB is out of scope after Brexit; XI (Northern Ireland) is covered. Not tax advice.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 4 of 4 listed endpoints.

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

Recent checks

10 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.17 Oct 2026
All 5 checks
When (UTC)ResultHTTPResponse
17 Oct, 07:50 UTCChallenge detected402268ms
15 Oct, 21:29 UTCChallenge detected402286ms
14 Oct, 14:31 UTCNo challenge detected405526ms
12 Oct, 06:05 UTCNo challenge detected405295ms
10 Oct, 12:38 UTCNo challenge detected40585ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for FactStamp?

Its listed price is $0.1.

What payment terms does FactStamp 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 listed?

In x402-list.com and x402 Bazaar. Superstables first indexed it on 10 Oct 2026.

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