Run EVM address inspection.

API Acre verifies the exact x402 price, Base network, recipient, and request before any wallet opens. One successful call costs $0.002 USDC.

No accountNo subscriptionNo private-key uploadOne-call authorization

API Acre never receives your private key; signing stays inside your wallet.

Loading a no-payment verification…

Verified live x402 quote

1 · Choose how to run one call

Both routes use this exact verified request and one-call price. Nothing is connected, signed, installed, or paid until you continue.

Browser or mobile

Pay with a wallet

Use an installed EVM wallet, or open Coinbase Wallet through a desktop QR code or mobile handoff.

Agent or terminal

Use Coinbase Agentic Wallet

Copy a command locked to this endpoint, request, and exact USDC cap. Copying is inert; running it may install the official CLI and pay after its authentication and policy checks.

Review Coinbase docs

Network
Recipient
USDC contract

No ETH gas needed. Connecting does not sign or pay. This EIP-3009 payment needs only the displayed USDC on Base because the facilitator submits settlement. Reject any later prompt that differs from the verified amount or recipient.

Review exact-cap Coinbase command

Running this command may automatically spend up to $0.002 USDC. npx --yes approves package installation. Use a separate low-value wallet and review the verified request first.

npx --yes awal@latest x402 pay https://apiacre.com/v1/crypto/address-inspect \
  -X POST \
  -d '{"address":"0x0000000000000000000000000000000000000000"}' \
  --max-amount 2000 \
  --json

Alternative third-party AgentCash command

The first command checks without paying; running fetch may pay up to the same exact cap.

Review AgentCash docs

npx --yes agentcash@latest check https://apiacre.com/v1/crypto/address-inspect
npx --yes agentcash@latest fetch https://apiacre.com/v1/crypto/address-inspect \
  --method POST \
  --header 'content-type: application/json' \
  --body '{"address":"0x0000000000000000000000000000000000000000"}' \
  --payment-protocol x402 \
  --payment-network base \
  --max-amount 0.002

See the result before connecting · Curated static example

EVM address inspection returns structured JSON. This example is static; the paid call returns a fresh result and settlement receipt.

{
  "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
  "service": "crypto.address-inspect",
  "version": "1",
  "data": {
    "valid": true,
    "address": "0x0000000000000000000000000000000000000000",
    "normalizedAddress": "0x0000000000000000000000000000000000000000",
    "checksumAddress": "0x0000000000000000000000000000000000000000",
    "checksumStatus": "valid",
    "inputIsChecksum": true,
    "inputCase": "numeric",
    "isZero": true,
    "bytes": 20,
    "warnings": [
      "Zero address detected; do not assume it is an owned or recoverable destination."
    ],
    "verification": {
      "standard": "ERC-55",
      "chainIndependent": true,
      "networkRequestsMade": false,
      "ownershipChecked": false,
      "balanceChecked": false,
      "contractCodeChecked": false
    },
    "source": "https://eips.ethereum.org/EIPS/eip-55",
    "reason": null
  },
  "meta": {
    "duration_ms": 42,
    "cached": false,
    "sources": [],
    "warnings": [],
    "next_actions": [
      {
        "service": "crypto.base-account-status",
        "title": "Base account status",
        "reason": "Read one-block Base ETH and native USDC balances, nonce, and contract-code evidence after validating the address.",
        "method": "POST",
        "path": "/v1/crypto/base-account-status",
        "price": "$0.003",
        "input_template": {
          "address": "$request.address",
          "block_tag": "safe"
        },
        "use_output": "Use the resolved block, ETH and official USDC balances, nonce, and code evidence as a compact Base account status check.",
        "handoff_path": "/catalog/crypto.base-account-status",
        "checkout_path": "/try/crypto.base-account-status",
        "sample_path": "/samples/crypto.base-account-status",
        "maximum_atomic_usdc": "3000",
        "handoff_payment_required": false,
        "executes_automatically": false,
        "authorization_required": true
      },
      {
        "service": "crypto.base-account-snapshot",
        "title": "Base account snapshot",
        "reason": "Read a one-block Base snapshot with ETH, native USDC, nonce, and contract-code evidence when the buyer needs balances as well as address validation.",
        "method": "POST",
        "path": "/v1/crypto/base-account-snapshot",
        "price": "$0.01",
        "input_template": {
          "address": "$request.address",
          "block_tag": "safe",
          "token_contracts": []
        },
        "use_output": "Use result.data.balances for the native ETH and USDC snapshot; add only explicitly chosen ERC-20 contracts in a separately authorized request.",
        "handoff_path": "/catalog/crypto.base-account-snapshot",
        "checkout_path": "/try/crypto.base-account-snapshot",
        "sample_path": "/samples/crypto.base-account-snapshot",
        "maximum_atomic_usdc": "10000",
        "handoff_payment_required": false,
        "executes_automatically": false,
        "authorization_required": true
      },
      {
        "service": "crypto.base-usdc-transfers",
        "title": "Base USDC transfer history",
        "reason": "Retrieve recent official Base USDC inflows and outflows for the validated address across a bounded block range.",
        "method": "POST",
        "path": "/v1/crypto/base-usdc-transfers",
        "price": "$0.005",
        "input_template": {
          "address": "$request.address",
          "lookback_blocks": 2000,
          "direction": "any",
          "limit": 25,
          "block_tag": "safe"
        },
        "use_output": "Use result.data.transfers as newest-first public event evidence; it is bounded history and does not prove identity, authorization, purpose, or current balance.",
        "handoff_path": "/catalog/crypto.base-usdc-transfers",
        "checkout_path": "/try/crypto.base-usdc-transfers",
        "sample_path": "/samples/crypto.base-usdc-transfers",
        "maximum_atomic_usdc": "5000",
        "handoff_payment_required": false,
        "executes_automatically": false,
        "authorization_required": true
      }
    ]
  }
}

Review exact request JSON

Result

Settlement receipt

Delivered in production

Independently purchased

At least one independently attributed settlement was observed for this service through 2026-09-01. Operator validation is excluded.

Review the aggregate claim boundary

Independent monitoring

Live x402 handshake report

The x402 Register independently checks API Acre's unpaid challenge, price, protocol version, and availability. It does not purchase or validate paid results.

Open the current report ↗

Change the request (optional)

JSON input

The default request is verified automatically. Editing it invalidates the quote and requires this no-payment verification again.

Prefer your own client? Use the official x402 SDK examples. Browser checkout requires an EVM wallet with USDC on Base; command-line buyers require their own separately configured wallet and spending policy.