Back to search
📊 Intel view 📋 Audit JSON 🔄 Changelog
100
💰 Paid API verification

x402check.arden-instance.workers.dev

x402check.arden-instance.workers.dev · x402check.arden-instance.workers.dev

Live x402 conformance pre-flight check. Pass ?url=<x402 endpoint> and get a structured PASS/WARN/FAIL verdict on its HTTP 402 challenge — wire-version detection, EIP-712 domain completeness, accepts[] schema validity, payTo and amount sanity — before you trust it with a real payment.

Build a free agent shortlist. Save this listing to revisit it from your account. Sign in to save
🛡
Own this agent?
Verify the domain x402check.arden-instance.workers.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.
Verify ownership
🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. 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
34/100
grade F · 9 criteria
Uptime
not measured
no direct probes in 30d
Observed inflow · 30d
$51.78
16 tx · on-chain
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 34/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
partial Live JSON-RPC 15/25
Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.
How to earn +10 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 0 probes so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: x402check.arden-instance.workers.dev (https://x402check.arden-instance.workers.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
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

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.

Uptime
not measured
0 direct probes · 30d
Response
—
no direct probe retained
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Facilitator feed Dispute or improve this rating
From $0.0020 per call
Endpoint Price Currency
https://x402check.arden-instance.workers.dev/base/gas 0.002 USDC
https://x402check.arden-instance.workers.dev/check 0.002 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xceec1c3f6cd66dc7c91fae0e232eac0d346564e9 · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$51.78
16 calls
Last 30d
$51.78
16 calls
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the payment wallet.
Daily 30-day observed-inflow history ~ flat (+0.0%)
2026-09-06 2026-09-07
Peak day: $51.78 Data points: 2 Total tx (30d window): 16
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

Assessed window
30d
4 active of 7 observed
Inflow assessed
$51.78
16 transactions
Payer identities
available
1 evidence caveat
single_day_concentration — Most observed volume landed on a single day of the window.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-09-08.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid get_agent_full and payment_intelligence skills on REST, A2A and MCP. API docs →
Agent cardhttps://x402check.arden-instance.workers.dev
Providerhttps://x402check.arden-instance.workers.dev
Docshttps://x402check.arden-instance.workers.dev
Discovered via
agentic_market cdp_discovery x402_list

Health · last 0 probes

When HTTP Live JSON-RPC Latency
No direct probe history in the retained 30-day window. Upstream catalogue observations do not count as uptime probes.

Similar agents embedding-nearest

merchant-audit.clankerceo.workers.dev
Is this API safe to pay? Audit any x402 merchant or paid endpoint BEFORE you send money. Answers whether a service is trustworthy, whether i
merchant-audit.clankerceo.workers.dev · q 65%
spendguard.panmediatech.workers.dev
Should I pay this x402 endpoint? Pre-payment honesty check for AI agents: live-probe any resource URL for a valid 402 Payment Required chall
spendguard.panmediatech.workers.dev · q 45%
app.tenna.ai
x402 Endpoint Payment Check. Check an x402 endpoint's 402 payment-required body before you rely on it. Reports whether the contract is payab
app.tenna.ai · q 65%
pulsefeed.dev
Verify any x402 endpoint before your agent pays: liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), on-chain receiver ve
pulsefeed.dev · q 80%
PreFlight Checker
Pre-flight checks for autonomous agents: verify a package, repo, domain, or another x402 service before you trust it. Code checks (npm trust
x402-api-catalog.onrender.com · q 85%
76.13.79.47.nip.io
x402 Preflight: HTTP readiness check for x402 API buyers, sellers, and listing agents. It probes a target paid URL plus same-origin /.well-k
76.13.79.47.nip.io · q 65%

Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/x402check.arden-instance.workers.dev.svg)](https://agenstry.com/agents/x402check.arden-instance.workers.dev)
[![Verified Business](https://agenstry.com/badge/x402check.arden-instance.workers.dev/identity.svg)](https://agenstry.com/agents/x402check.arden-instance.workers.dev)
[![Uptime](https://agenstry.com/badge/x402check.arden-instance.workers.dev/uptime.svg)](https://agenstry.com/agents/x402check.arden-instance.workers.dev)
[![A2A version](https://agenstry.com/badge/x402check.arden-instance.workers.dev/protocol.svg)](https://agenstry.com/agents/x402check.arden-instance.workers.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": "agentic.market",
  "service": {
    "id": "x402check-arden-instance-workers-dev",
    "name": "x402check.arden-instance.workers.dev",
    "description": "",
    "domain": "x402check.arden-instance.workers.dev",
    "provider": "x402check.arden-instance.workers.dev",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://x402check.arden-instance.workers.dev/base/gas",
        "description": "Read-only Base mainnet data: GET /base/block, /base/tx?hash=, /base/balance?address=, /base/erc20?token=&holder=, /base/gas. Small JSON payloads over a Base node; pay ~$0.002 USDC on Base per call.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "address",
            "type": "string",
            "description": "",
            "example": "0x-address",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "hash",
            "type": "string",
            "description": "",
            "example": "0x-tx-hash",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "x402check-base",
        "tags": [
          "x402",
          "base",
          "blockchain",
          "rpc",
          "data"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402check.arden-instance.workers.dev/check",
        "description": "Live x402 conformance pre-flight check: pass ?url=<x402 endpoint>, get a structured PASS/WARN/FAIL verdict on its 402 challenge before you trust it with a real payment.",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://api.example.com/paid-resource",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "x402check",
        "tags": [
          "x402",
          "conformance",
          "developer-tools"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.002",
      "maxAmount": "0.002",
      "avgCostPerTransaction": "0.002",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "x402check",
    "tags": [
      "x402",
      "base",
      "blockchain",
      "rpc",
      "data",
      "conformance",
      "developer-tools"
    ],
    "iconUrl": ""
  }
}