MARKET MONITOR / CATALOGUE Services 131,001 MCP listed 40,656 x402 90,412 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-29 · 3 sources
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Daily transfers, volume and coverage →

x402 Checkup

x402 resource x402 REST

26y54j5j9z6r6ctr.68r.lambda-web.us-east-1.on.aws · 26y54j5j9z6r6ctr.68r.lambda-web.us-east-1.on.aws · Crypto & Payments

Checkup for x402 buyer clients. Pay once and get a field-by-field diagnosis of the payment your client signed (amount, recipient, validity window, clock offset, nonce, EIP-712 signature) and of the request that arrived, plus the facilitator's verify and settle results. Base mainnet payments get the

Price per call 0.005 USDC per call published unit: per call
Calls · 30d 1 counted by the source, no daily split
Payers · 30d 1 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 2026-10-29

Where you can pay

2 routes from the provider's payment requirements
Payment networks and amounts published for x402 Checkup.
Network Scheme Amount Asset
Base exact 0.005 USDC
Base Sepolia exact — —

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 5000 = 0.005 USDC per call on Base. 2 payment options published.

What you can call

access: payment per call (x402)

endpoint https://26y54j5j9z6r6ctr.68r.lambda-web.us-east-1.on.aws/v1/checkup

Request

{
    "method": "GET",
    "queryParams": {
        "echo": "hello"
    },
    "type": "http"
}

Response

{
    "example": {
        "diagnosis": {
            "checks": [
                {
                    "id": "amount",
                    "message": "authorization.value is exactly the required amount (5000 atomic units).",
                    "status": "pass"
                },
                {
                    "id": "valid_before",
                    "message": "The authorization stays valid for 86400 s. ...",
                    "status": "warn"
                }
            ],
            "payment": {
                "from": "0x...",
                "network": "eip155:8453",
                "signature_type": "eoa",
                "value": "5000"
            },
            "request": {
                "body": "{\"echo\":\"hello\"}",
                "method": "POST",
                "path": "/v1/checkup"
            },
            "summary": {
                "fail": 0,
                "info": 2,
                "pass": 9,
                "warn": 1
            }
        },
        "report_url": "https://checkup.example/v1/reports/0x3f1c...",
        "settlement": "Settlement happens after this response is sent. Its result is in the PAYMENT-RESPONSE header and in report_url."
    },
    "type": "json"
}

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

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 21 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for x402 Checkup.
Window Observed Transfers
Last complete day (2026-10-28) — —
Last 7 days — —
Last 30 days — —
Growth, 7d against the 7 before not comparable
Source: on-chain transfer scan (USDC on Base) Window: 2026-09-29 → 2026-10-28 Scanned: 30/30 days Sample: 0 days with a transfer First seen: never Last update: 2026-10-28

Daily history → · what a transfer does and does not prove

Opportunity insights

2 findings from measured data
  • Payment attribution is blocked

    The payout address is shared with 21 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

    286 of 30,024 services (1.0%) in Crypto & Payments have attributable inflows; 25,611 have a source-measured call count. Median measured calls: 2.

    Rank this category by observed inflows →

What the provider says

Checkup for x402 buyer clients. Pay once and get a field-by-field diagnosis of the payment your client signed (amount, recipient, validity window, clock offset, nonce, EIP-712 signature) and of the request that arrived, plus the facilitator's verify and settle results. Base mainnet payments get the full diagnosis; Base Sepolia payments get a preview with the status of each check only.

Quoted from x402 Bazaar · source record · read 2026-10-29


Facts and where they come from

Price
0.005 USDC per call Provider claim
Recorded value: 0.005 USDC per call.
Unit
per call
Protocol
x402, REST · transport: HTTP Provider claim
Auth
x402
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
1 calls · 1 unique payers in the 30 days before 2026-10-24. 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 21 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 $0.01 — 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 21 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
0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8
0.005 USDC
From source record
Base Sepolia · exact · asset unresolved
0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8
raw amount 5000 (unit unresolved)
From source record

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

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://26y54j5j9z6r6ctr.68r.lambda-web.us-east-1.on.aws/v1/checkup
Evidence

Als Resource-URL im Bazaar-Eintrag geführt.

api.cdp.coinbase.com 2026-10-29
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 2026-10-29
Payment Provider claim
2 rails: Base, Base Sepolia · payee 0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8
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 2026-10-29
Pricing Provider claim
0.005 USDC per call
Evidence

Atomic amount 5000 = 0.005 USDC per call on Base. 2 payment options published. Netzwerk: Base, Base Sepolia.

api.cdp.coinbase.com 2026-10-29
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 2026-10-29
Provider Provider claim
26y54j5j9z6r6ctr.68r.lambda-web.us-east-1.on.aws
Evidence

Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.

api.cdp.coinbase.com 2026-10-29
Usage Verified
1 calls / 1 unique payers in the last 30 days
Evidence

Source-reported usage from Coinbase x402 Bazaar, read on 2026-10-29. Letzter Aufruf laut Quelle: 2026-10-24T17:23:50.329Z. Aufrufe sind kein Umsatz.

api.cdp.coinbase.com 2026-10-29

Endpoint checks

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

Tags


Competitors & category benchmark

Rank the whole category →
Closest competitors Crypto & Payments

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 30,024 services in this category
With a measured call count 25,611 (85.3 %)
With a published price 27,811 (92.6 %)
With attributable inflows 286 (1.0 %)
Observed inflows · 30d $640,172.17
Median measured calls 2
Median price per call $0.01

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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.