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/76/transactions

What it does

This endpoint at lowpaymentfee.com exposes a card-transactions resource at `/api/v1/cards/76/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 endpoint probed (`/api/v1/cards/76/transactions`) is labeled "Premium API Access" and accepts HTTP POST requests. The x402 challenge advertises a maximum amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 `exact` scheme to the specified payTo address, with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through per-request micropayment.

Documentation on the site 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 crawl. The endpoint is confirmed live (402 challenge returned), but the actual behavior and data returned after payment are unknown from the available material.

Capabilities

x402-paymentusdc-micropaymentbase-networkcard-transactionspay-per-requestno-api-key

Use cases

  • —Fetching card transaction data via a single micropayment without needing an API key
  • —Integrating pay-per-call card transaction lookups into agent workflows
  • —Programmatic access to transaction records settled on Base L2

Fit

Best for

  • —Developers wanting keyless, pay-per-request access to card transaction data
  • —AI agents that can settle x402 micropayments on Base
  • —Prototyping workflows that need transaction data without subscription commitments

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would prefer bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/cards/76/transactions
# Returns 402 with x402 challenge; attach X-PAYMENT header with signed USDC payment to access.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/cards/76/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 virtually no documentation: no OpenAPI spec, no request/response schema, no examples, and no explanation of what data the endpoint actually returns. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No OpenAPI spec or request/response schema available
  • —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content
  • —The actual data returned by this endpoint after payment is completely unknown from available material
  • —The endpoint path references a specific card ID (76); it is unclear whether this is a demo or a real resource

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:07:54Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

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