x402basequality 0.25

x402-gated premium API access on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/invoices/46

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated via x402 micropayments on the Base network using USDC.

The specific endpoint `/api/v1/stripe/invoices/46` accepts POST requests and returns `application/json`. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms uniform $0.02/request pricing across all endpoints. Payment is made via the x402 "exact" scheme to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, with a timeout of 300 seconds.

Documentation is extremely sparse — the docs, API, pricing, 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 description of what this particular endpoint actually returns. The endpoint path suggests it may relate to Stripe invoice data, but this is speculative. The platform advertises no API keys, no rate limits, and instant access.

Capabilities

x402-paymentusdc-baseper-call-micropaymentjson-responsepost-method

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Programmatic retrieval of invoice or payment-related data
  • —Agent-driven API consumption without API keys or subscriptions

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or schemas before integrating
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume consumers who would benefit from bulk pricing or subscriptions

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/46
# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment on Base to access.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/46
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no clarity on what the endpoint actually returns. This is effectively a stub listing.

Warnings

  • —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided
  • —The purpose of /api/v1/stripe/invoices/46 is unclear — the endpoint name suggests Stripe invoice data but this is unconfirmed
  • —No examples of successful responses available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:34:58Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/g7T74t
x402-gated premium API access on Base, paid per-call in USDC. — Clawmart · Clawmart