x402basequality 0.35

Query ANKR 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/ANKR/balance

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for the ANKR token. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, 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/ANKR/balance` accepts POST requests and returns JSON. Payment is handled via the X-PAYMENT header using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each request is paid individually at the time of the call.

Documentation on the site is extremely thin: the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no explanation of what fields the balance response contains. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know the exact request body format or response structure.

Capabilities

wallet-balanceankr-tokenx402-paymentusdc-settlementbase-networkpay-per-requestno-api-key

Use cases

  • —Check the current ANKR token balance for a given wallet address
  • —Integrate ANKR balance lookups into automated trading or portfolio tracking bots
  • —Agent-driven portfolio monitoring that pays per query with no subscription

Fit

Best for

  • —AI agents needing on-demand crypto balance queries without API key management
  • —Developers who want pay-per-call wallet balance checks settled in USDC on Base
  • —Low-volume or sporadic balance lookups where a subscription would be wasteful

Not for

  • —High-frequency balance polling where per-request fees would accumulate quickly
  • —Users who need detailed transaction history or multi-token portfolio views in a single call
  • —Anyone requiring comprehensive documentation or SLA guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/ANKR/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/ANKR/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation beyond a landing page listing, no request/response examples, and all doc pages render only 'Connect wallet'. The listing is largely inferred.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or JSON schema describing request body or response format
  • —Example request JSON is inferred (address field) and may not match actual API contract
  • —The broader lowpaymentfee.com platform lists many endpoints but provides no technical specs for any of them

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:37:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/WFyFKY
Query ANKR wallet balance via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart