💰 Paid API

api.checkpoint402.com

api.checkpoint402.com · api.checkpoint402.com

Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.

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Verify the domain api.checkpoint402.com 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

Dispute or improve this rating

C

Conformance score: 60/100

Catalogue listing, not an A2A agent: a paid API listed by agentic.market. 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 agentic.market. 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: api.checkpoint402.com (https://api.checkpoint402.com). 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
2026-10-14 04:38:13 current	`a0855190be99…`	view →

Uptime

not graded

catalogue listing · no agent card to probe

Response

—

last direct probe

Skills

declared

Streaming

—

SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating

From $0.0300 per call

Endpoint	Price	Currency
`https://api.checkpoint402.com/v1/tx-explain`	0.03	USDC
`https://api.checkpoint402.com/v1/new-tokens`	0.1	USDC
`https://api.checkpoint402.com/v1/defi-yields`	0.05	USDC
`https://api.checkpoint402.com/v1/company-events`	0.1	USD
`https://api.checkpoint402.com/v1/sanctions-screen`	0.05	USD

Try it ↗ Opens the operator's playground / docs in a new tab.

Settlement wallet: 0x739e2381939f558046e6041e1853b49b8033db6e on Base · basescan ↗

Listed by facilitators Coinbase CDP · 1

Observed on-chain inflow verified on-chain

Last 7d

                  $0.17
                

5 transfers · synced 2026-10-16

USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.

How the last 30 days were settled

$0.14 in the ledger, not classified yet. Each transfer is read once to tell facilitator-settled x402 payments from plain transfers. How we classify

Cross-check: Coinbase's Bazaar reports 2 calls in 30 days to this wallet; our ledger observed 4 transfers (0 facilitator-settled) over 16 of 30 scanned days. Different counters; neither is assumed correct.

Payment authenticity evidence confidence How we measure this →

concentrated_payers 3/5

Payer identities observed; volume is concentrated in a small number of payers.

Assessed window

30d

2 active of 15 observed

Inflow assessed

$0.14

4 transactions

Payer identities

available

1 evidence caveat

short_observation_window — Fewer than three active days observed — too little history to characterise a pattern.

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 2026-10-15.

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 wallet_intel and payment_intelligence skills on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →

Agent card	`https://api.checkpoint402.com/`
Provider	https://api.checkpoint402.com
Docs	https://api.checkpoint402.com/v1/tx-explain

Discovered via

cdp_discovery recrawl_paid agentic_market

Health · last 1 probes

When	HTTP	Live JSON-RPC	Latency
2026-10-14 04:44:11	404	—	—

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Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/api.checkpoint402.com.svg)](https://agenstry.com/agents/api.checkpoint402.com)
[![Verified Business](https://agenstry.com/badge/api.checkpoint402.com/identity.svg)](https://agenstry.com/agents/api.checkpoint402.com)
[![Uptime](https://agenstry.com/badge/api.checkpoint402.com/uptime.svg)](https://agenstry.com/agents/api.checkpoint402.com)
[![A2A version](https://agenstry.com/badge/api.checkpoint402.com/protocol.svg)](https://agenstry.com/agents/api.checkpoint402.com)

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": "api-checkpoint402-com",
    "name": "api.checkpoint402.com",
    "description": "",
    "domain": "api.checkpoint402.com",
    "provider": "api.checkpoint402.com",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://api.checkpoint402.com/v1/tx-explain",
        "description": "Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee \u2014 plus the structured decoded data.",
        "pricing": {
          "amount": "0.03",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "chain",
            "type": "string",
            "description": "",
            "example": "base",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "hash",
            "type": "string",
            "description": "",
            "example": "0xcbb626797fd53a67c9342c1541bc5e56a447b77a3efe490b5d7b2876be3b7205",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Checkpoint402 Tx Explainer",
        "tags": [
          "blockchain",
          "transaction",
          "explainer",
          "base",
          "ethereum"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.03",
      "maxAmount": "0.03",
      "avgCostPerTransaction": "0.03",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "Checkpoint402 Tx Explainer",
    "tags": [
      "blockchain",
      "transaction",
      "explainer",
      "base",
      "ethereum"
    ],
    "iconUrl": ""
  }
}

Activity (audit trail)

Listing history

Endpoints

Health · last 1 probes

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Audit-grade evidence bundle

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