x402basequality 0.35

Check CRO wallet balance via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wallet/CRO/balance

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for CRO (Cronos) tokens. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint `/api/v1/wallet/CRO/balance` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys are required; payment is handled inline via the X-PAYMENT header. The provider advertises no rate limits and instant access.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The endpoint is confirmed live (returns HTTP 402 with a valid x402 challenge), but the actual response format for a successful paid call is unknown.

Capabilities

crypto-wallet-balancecro-balance-lookupx402-micropaymentusdc-base-settlementpay-per-request

Use cases

  • —Checking CRO token balance for a given wallet address
  • —Integrating wallet balance lookups into portfolio trackers
  • —Automated monitoring of Cronos holdings

Fit

Best for

  • —Agents needing quick one-off CRO balance checks without API key registration
  • —Developers prototyping crypto dashboards who want pay-per-call pricing
  • —x402-native workflows that settle payments in USDC on Base

Not for

  • —High-frequency balance polling where per-request fees add up quickly
  • —Users who need detailed transaction history or multi-token balance in a single call

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/CRO/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{"address": "0xYourWalletAddress"}'

Example

Request

{
  "address": "0x1234567890abcdef1234567890abcdef12345678"
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/CRO/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no examples, and all documentation pages are empty stubs. The request body format and response structure are entirely inferred.

Warnings

  • —No OpenAPI or schema documentation available — request and response formats are unknown and inferred
  • —All doc pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
  • —The example_request_json is speculative; actual required fields are undocumented
  • —It is unclear what blockchain or wallet type the CRO balance endpoint queries

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:30:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/EzJCT6
Check CRO wallet balance via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart