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/29/transactions

What it does

This endpoint at lowpaymentfee.com provides access to a card transactions resource at `/api/v1/cards/29/transactions` via the x402 payment protocol. The endpoint is live and returns a standard 402 challenge requiring payment in USDC on the Base network. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD per request.

The provider's landing page advertises a broad suite of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and instant access. However, the specific endpoint being listed here (`/api/v1/cards/29/transactions`) is not explicitly described on the landing page among the advertised APIs, and its exact functionality is unclear. The title "Premium API Access" and the path suggest it relates to card transaction data (possibly retrieving or creating transactions for card ID 29), but no documentation, request schema, or response schema is available to confirm this.

Payment settles via the x402 "exact" scheme on Base to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The endpoint accepts POST requests and has a payment timeout of 300 seconds. Documentation pages (/docs, /pricing, /api, /README) all returned only a "Connect wallet" prompt with no substantive content.

Capabilities

x402-paymentusdc-basecard-transactionspost-endpointpay-per-request

Use cases

  • —Retrieving or submitting card transaction data via a pay-per-request model
  • —Integrating card transaction lookups into agent workflows without API key management
  • —Programmatic access to card-level transaction records settled in USDC on Base

Fit

Best for

  • —Agents needing keyless, pay-per-call access to card transaction data
  • —Developers who prefer crypto micropayments over subscription billing
  • —x402-compatible clients on the Base network

Not for

  • —Users who need detailed API documentation before integrating
  • —High-volume use cases where per-request pricing may add up
  • —Anyone needing non-USDC or non-Base payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/cards/29/transactions \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/cards/29/transactions
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no request/response schema, and the specific endpoint path (/api/v1/cards/29/transactions) is not listed among the provider's advertised APIs. All doc pages return only 'Connect wallet' with no content. The purpose and functionality of this specific endpoint must be inferred from the URL path alone.

Warnings

  • —No API documentation available — all doc pages return only 'Connect wallet'
  • —This specific endpoint (/api/v1/cards/29/transactions) is not listed among the provider's advertised APIs on the landing page
  • —No request or response schema provided; exact functionality is unknown
  • —The hardcoded card ID '29' in the path suggests this may be a specific resource rather than a general-purpose endpoint

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:47:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

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