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📊 Intel view 📋 Audit JSON 🔄 Changelog
60
💰 Paid API

Checkup

checkup.kagurazaka.dev · checkup.kagurazaka.dev

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.

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Verify the domain checkup.kagurazaka.dev via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by cdp_discovery. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
click to expand breakdown click to collapse breakdown
n/a Agent card n/a
Not applicable: a paid API listed by cdp_discovery. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
partial Live endpoint 15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
n/a Protocol version n/a
Not applicable: no A2A agent card served.
n/a JWS signature n/a
Not applicable: no A2A agent card served.
n/a Uptime track record n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a Skill declaration n/a
Not applicable: no A2A agent card served.
partial Verified Identity 5/10
Provider declared: checkup.kagurazaka.dev (https://checkup.kagurazaka.dev/). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs
pass Freshness + modern flags 4/5
seen in upstream source within 0d
n/a Security declaration n/a
Not applicable: no A2A agent card served.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Listing history

1 snapshot Every change to the catalogue entry
Agent card snapshots
Captured Hash Snapshot
2026-10-25 13:27:01 current 8d1ed8d1f3a4… view →
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating
From $0.0050 per call
Endpoint Price Currency
https://checkup.kagurazaka.dev/v1/checkup 0.005 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8 on Base · basescan ↗
Listed by facilitators Coinbase CDP · 1
Agent cardhttps://checkup.kagurazaka.dev/
Providerhttps://checkup.kagurazaka.dev/
Docshttps://checkup.kagurazaka.dev/v1/checkup
Discovered via
cdp_discovery recrawl_paid

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-25 14:07:02 404 — —

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Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/checkup.kagurazaka.dev.svg)](https://agenstry.com/agents/checkup.kagurazaka.dev)
[![Verified Business](https://agenstry.com/badge/checkup.kagurazaka.dev/identity.svg)](https://agenstry.com/agents/checkup.kagurazaka.dev)
[![Uptime](https://agenstry.com/badge/checkup.kagurazaka.dev/uptime.svg)](https://agenstry.com/agents/checkup.kagurazaka.dev)
[![A2A version](https://agenstry.com/badge/checkup.kagurazaka.dev/protocol.svg)](https://agenstry.com/agents/checkup.kagurazaka.dev)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "cdp_discovery",
  "resource_count": 1,
  "sample": "https://checkup.kagurazaka.dev/v1/checkup"
}