x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/payments/116

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/payments/116` is labeled "Premium API Access" but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and requires a payment of up to 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 payTo address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The broader platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. However, documentation pages (docs, pricing, README) returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schemas for this or any endpoint are unknown.

Capabilities

x402-paymentusdc-basepay-per-requestpost-methodno-api-keyno-rate-limit

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments on Base
  • —Agent-driven API consumption without pre-registration or API key management
  • —Programmatic pay-as-you-go access to a multi-category API platform

Fit

Best for

  • —Developers or agents wanting zero-signup, pay-per-call API access
  • —x402-compatible clients on the Base network
  • —Low-volume or exploratory API usage without subscription commitments

Not for

  • —Users needing detailed API documentation or guaranteed SLAs before purchasing
  • —High-volume consumers who need bulk pricing or rate-limit guarantees
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/116 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/116
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and confirms pricing and payment details, but the endpoint's actual functionality ("Premium API Access") is completely undocumented. All doc/pricing/README pages return only a wallet-connect prompt with no content. No request or response schemas are available, making it impossible to determine what this endpoint actually does.

Warnings

  • —The specific functionality of /api/v1/payments/116 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no substantive content.
  • —No request or response schema is available for this or any endpoint on the platform.
  • —The platform lists many endpoints but none have documented input/output contracts.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:38:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/Vw3zaF
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart