x402basequality 0.25

x402-gated card-transactions endpoint on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/cards/39/transactions

What it does

This endpoint at lowpaymentfee.com exposes a card-transactions resource at `/api/v1/cards/39/transactions` behind an x402 payment wall. It is part of a broader platform that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request settled in USDC on the Base network.

The specific endpoint listed here accepts HTTP POST requests and returns JSON. The x402 challenge confirms it is live, requiring a maximum payment of 20,000 base-unit USDC (i.e., $0.02, since USDC uses 6 decimals). Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base. No API keys or rate limits are advertised; access is granted purely via the x402 payment header.

Documentation on the site is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no explanation of what the `/cards/39/transactions` resource actually returns or what POST body it expects. The endpoint's purpose (card transactions) can only be inferred from the URL path. Prospective callers should be aware that without documentation, integration requires experimentation or direct contact with the provider.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestcard-transactionshttp-post

Use cases

  • —Retrieving transaction data for a specific card via a single paid API call
  • —Programmatic access to card transaction records without API key registration
  • —Agent-driven financial data retrieval with per-request USDC micropayments

Fit

Best for

  • —Developers wanting keyless, pay-per-use card transaction data
  • —AI agents that can settle x402 payments on Base in USDC
  • —Quick prototyping without subscription commitments

Not for

  • —Production use requiring documented request/response schemas
  • —High-volume batch processing where per-request fees add up
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/cards/39/transactions \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/cards/39/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, but there is zero documentation on request format, response schema, or what the card-transactions resource actually provides. No OpenAPI spec, no examples, and all doc pages are empty. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
  • —No request or response schema provided; callers must guess the POST body format.
  • —The purpose of /api/v1/cards/39/transactions is unclear — 'card transactions' is inferred solely from the URL path.
  • —No OpenAPI or ai-plugin manifest found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:48:07Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/cT2UZD
x402-gated card-transactions endpoint on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart