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Vat

x402 resource x402 REST

agents.factstamp.dev · agents.factstamp.dev · Business & Growth

Provider site ↗

Price per call 0.05 USDC per call published unit: per call

Calls · 30d 3 counted by the source, no daily split

Payers · 30d 3 distinct paying addresses seen by the source

Observed inflows · 30d — not attributable

Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)

Payment evidence Attribution blocked confidence: low · read 2026-11-01

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 20 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for Vat.
Window	Observed	Transfers
Last complete day (2026-10-31)	—	—
Last 7 days	—	—
Last 30 days	—	—
Growth, 7d against the 7 before	not comparable

Source: on-chain transfer scan (USDC on Base) Window: 2026-10-02 → 2026-10-31 Scanned: 30/30 days Sample: 0 days with a measurement First seen: never Last update: 2026-10-31

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Vat.
Network	Full wallet address	Evidence
Base	0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

Rank the whole category →

Closest competitors Business & Growth

StableUpload 381 calls · 0.005 USDC per call $8.67
Minifetch Technical SEO API 110 calls · 0.001 USDC per call —
Radix (base) conversion 52 calls · 0.002 USDC per call —
AISkills402: SEO Meta Writer 46 calls · 0.03 USDC per call —
Interzoid Data APIs 37 calls · 0.01 USDC per call —

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 2,142 services in this category

With a measured call count	414 (19.3 %)
With a published price	512 (23.9 %)
With attributable inflows	18 (0.8 %)
Observed inflows · 30d	$38.24
Median measured calls	2
Median price per call	$0.01

Similar services

All of Business & Growth →

StableUpload x402 REST usage

Buy an upload slot. Agent uploads file via returned URL.

stableupload.dev Business & Growth 381 calls / 30d checked 2026-11-01

0.005 USDC per call per call

Minifetch Technical SEO API x402 REST usage

Cheap robots.txt preflight check before you call the Minifetch /extract and /run/seo-page-audit endpoints: returns whether Minifetch may fetch a target URL (allow/deny) plus its crawl-delay. If blocked and the site is no...

minifetch.com Business & Growth 110 calls / 30d checked 2026-11-01

0.001 USDC per call per call

Radix (base) conversion x402 REST usage

Convert an integer between numeral bases 2–36 (binary, octal, hex, base36, …). Arbitrary size via BigInt; digits are case-insensitive and a leading minus is allowed.

numeral.openverbs.com Business & Growth 52 calls / 30d checked 2026-11-01

0.002 USDC per call per call

AISkills402: SEO Meta Writer x402 REST usage

SEO Meta Writer — Writes the SEO title, meta description and (on request) the H1 heading for one web page, in the page's own language, inside hard character limits, matching what the searcher wants. Use when asked to wri...

api.aiskills402.com Business & Growth 46 calls / 30d checked 2026-11-01

0.03 USDC per call per call

Chosen by category and by whether we have measured them, not by who pays us. A sponsored placement in this list is labelled as such.

Service details, payment routes and source evidence

Where you can pay

1 route from the provider's payment requirements

Payment networks and amounts published for Vat.
Network	Scheme	Amount	Asset
Base	exact	0.05	USDC

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 50000 = 0.05 USDC per call on Base.

What you can call

access: payment per call (x402)

endpoint https://agents.factstamp.dev/vat

Request

{
    "body": {
        "country_code": "IE",
        "vat_number": "6388047V"
    },
    "bodyType": "application/json",
    "method": "POST",
    "type": "http"
}

Response

{
    "example": {
        "check": {
            "isValid": true,
            "userError": "VALID",
            "vat_number": "6388047V"
        },
        "country": {
            "code": "IE",
            "in_vies": true,
            "name": "Ireland"
        },
        "coverage": {
            "complete": true,
            "consulted": [
                "vies"
            ],
            "not_consulted": []
        },
        "query": {
            "country_code": "IE",
            "vat_number": "6388047V"
        },
        "receipt": {
            "alg": "Ed25519",
            "key_id": "2331751858f5e3b1"
        },
        "receipt_url": "https://factstamp.agentrails.workers.dev/r/c41e77b2aa90d613",
        "scope": "in_scope",
        "source": {
            "consultation_number": {
                "available": false
            },
            "licence": "CC BY 4.0 (European Commission reuse policy, Decision 2011/833/EU)",
            "member_state_code": "IE",
            "request_date": "2026-10-07T07:40:59.315Z",
            "source": "VIES (European Commission)"
        },
        "tool": "check_vat",
        "trader": {
            "address": "3RD FLOOR, GORDON HOUSE, BARROW STREET, DUBLIN 4",
            "identity_disclosed": true,
            "name": "GOOGLE IRELAND LIMITED"
        },
        "verdict": "valid"
    },
    "type": "json"
}

Examples are the provider's own, not a call we made.

Opportunity insights

2 findings from measured data

Payment attribution is blocked

The payout address is shared with 20 other service(s). That is normal for facilitator and platform addresses, and it is why this profile shows no inflow figure. The volume exists — it just cannot be split without inventing a rule.
How attribution works →
Category benchmark

18 of 2,142 services (0.8%) in Business & Growth have attributable inflows; 414 have a source-measured call count. Median measured calls: 2.
Rank this category by observed inflows →

What the provider says

An 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.

Quoted from x402 Bazaar · source record · read 2026-11-01

Facts and where they come from

Price: 0.05 USDC per call Provider claim
Recorded value: 0.05 USDC per call.
Unit: per call
Protocol: x402, REST · transport: HTTP Provider claim
Auth: x402
Endpoint: https://agents.factstamp.dev/vat
Source: x402 Bazaar (Coinbase CDP) · Public discovery API (provider-published records)
Last checked: Not checked by us yet — the data is as the source published it
First seen: 2026-10-24
Usage: 3 calls · 3 unique payers in the 30 days before 2026-10-25. Measured by the x402 Bazaar, not by us and not by the provider.

Money, and what it actually proves

Verified revenue · 30d Unknown

Observed inflows · 30d —

Attribution Shared

Receipt ledger Not connected

Attribution blocked · confidence low
The payout address is also published by 20 other service(s); the volume cannot be attributed to one of them.

Why revenue is “unknown”. A revenue figure needs a receipt: an amount a buyer actually paid for this service. We hold none for this entry, and we hold no funds at all. What we have instead is an activity value of $0.15 — the source's call count multiplied by the published price. That is what the list price implies, not what anyone paid. The payout address is also published by 20 other service(s); the volume cannot be attributed to one of them.

Daily market statistics — the ledger view, day by day

No daily history has been archived for this service yet. Open the full daily history →

Payment rails

Base · exact · USDC

0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32

0.05 USDC

From source record

A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it.

Provenance

One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.

Statement	Status	What we found	Source	Checked
Endpoint	Provider claim	https://agents.factstamp.dev/vat Evidence Als Resource-URL im Bazaar-Eintrag geführt.	api.cdp.coinbase.com	2026-11-01
Input output	Provider claim	Request/response examples published with the listing Evidence Beispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters.	api.cdp.coinbase.com	2026-11-01
Payment	Provider claim	1 rail: Base · payee 0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32 Evidence Aus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt.	api.cdp.coinbase.com	2026-11-01
Pricing	Provider claim	0.05 USDC per call Evidence Atomic amount 50000 = 0.05 USDC per call on Base. Netzwerk: Base.	api.cdp.coinbase.com	2026-11-01
Protocol	Provider claim	x402 (HTTP 402 payment challenge) Evidence Im x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http).	api.cdp.coinbase.com	2026-11-01
Provider	Provider claim	agents.factstamp.dev Evidence Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.	api.cdp.coinbase.com	2026-11-01
Usage	Verified	3 calls / 3 unique payers in the last 30 days Evidence Source-reported usage from Coinbase x402 Bazaar, read on 2026-11-01. Letzter Aufruf laut Quelle: 2026-10-25T16:53:03.459Z. Aufrufe sind kein Umsatz.	api.cdp.coinbase.com	2026-11-01

Endpoint checks

We have not called this endpoint yet. Until we do, everything above is what the source published — no more.

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Price

0.05 USDC per call

price checked 2026-11-01 Open at agents.factstamp.dev

You buy from the provider, not from us. This page takes no payment, holds no funds and stores no wallet keys.

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