x402basequality 0.30

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/26/transactions

What it does

This endpoint at lowpaymentfee.com exposes a POST resource at `/api/v1/cards/26/transactions` behind an x402 payment challenge. 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 `/cards/26/transactions` path suggests a card-transaction lookup or creation resource, but the provider's landing page does not list this particular endpoint among its advertised categories, and no OpenAPI schema, request/response examples, or detailed documentation were found in the crawl. The docs, pricing, and API pages all returned only a "Connect wallet" prompt with no further content. Because of this, the exact input parameters and response shape are unknown.

Payment is handled via the x402 protocol (version 1, "exact" scheme). The challenge advertises a maxAmountRequired of 20000 base units of USDC (contract 0x8335…2913 on Base, 6 decimals), which equals $0.02. No API keys or rate limits are advertised; access is granted per-request upon valid payment. The payTo address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 and the maximum timeout is 300 seconds.

Capabilities

x402-paymentusdc-basepay-per-requestcard-transactionspost-endpoint

Use cases

  • —Querying or creating card transaction records via a single paid API call
  • —Integrating card transaction data into automated agent workflows without API keys
  • —Programmatic access to card-level transaction information settled in USDC on Base

Fit

Best for

  • —Agents that can settle x402 USDC payments on Base
  • —Developers wanting keyless, pay-per-call card transaction access
  • —Workflows requiring low-cost ($0.02) per-request pricing with no commitments

Not for

  • —Users who need detailed API documentation or schema guarantees before integrating
  • —High-volume batch processing where per-request fees add up quickly
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/cards/26/transactions \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/cards/26/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and no documentation beyond a wallet-connect prompt. The specific /cards/26/transactions path is not listed on the provider's own landing page, making its purpose uncertain. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The /cards/26/transactions path is not listed among the provider's advertised APIs — its purpose is unclear
  • —All doc/pricing/API pages returned only a 'Connect wallet' prompt with no substantive content
  • —Request body format and response shape are completely unknown

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:46:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

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