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/65/transactions

What it does

This endpoint at lowpaymentfee.com exposes a card-transactions resource at `/api/v1/cards/65/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 gated via the x402 protocol on the Base network, settled in USDC.

The specific endpoint listed here (`/api/v1/cards/65/transactions`) accepts POST requests and is labeled "Premium API Access" in the x402 challenge. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. Payment is made via the x402 `exact` scheme to the specified payTo address on Base. No API keys or rate limits are advertised; access is granted purely through per-request micropayments.

Documentation on the site is extremely thin — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/cards/65/transactions` resource actually returns. The endpoint is confirmed live (returns HTTP 402 with a valid x402 challenge), but without documentation it is unclear what data or functionality is provided beyond the generic "Premium API Access" label.

Capabilities

x402-paymentusdc-micropaymentbase-networkpost-endpointcard-transactionspay-per-request

Use cases

  • —Retrieving card transaction data via a single micropayment per request
  • —Programmatic access to card-level transaction records without API key management
  • —Agent-driven financial data retrieval settled in USDC on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-call access to card transaction data
  • —AI agents that can settle x402 micropayments on Base
  • —Users who prefer no-commitment, no-subscription API access

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/cards/65/transactions
# Returns 402 with x402 challenge; include X-PAYMENT header with signed USDC payment to proceed.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/cards/65/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is confirmed live with a valid x402 challenge, but there is zero documentation on what the endpoint actually does or returns. No OpenAPI schema, no request/response examples, and all doc pages render only 'Connect wallet'. The listing is effectively a stub.

Warnings

  • —No documentation available — all doc/API/pricing/README pages show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided
  • —The purpose of /api/v1/cards/65/transactions is unclear — 'Premium API Access' is a generic label
  • —Cannot verify what data the endpoint returns without making a paid request

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:00:58Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

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