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/178

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, paid in USDC on the Base network, with no API keys, rate limits, or commitments required.

The specific endpoint `/api/v1/payments/178` is labeled "Premium API Access" in the x402 challenge 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…) on Base, which equals $0.02 (USDC uses 6 decimals). Payment is made via the x402 exact scheme to wallet 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 further technical detail, so the actual request/response schemas for this or any endpoint are unknown.

Capabilities

x402-paymentpay-per-requestusdc-baseno-api-keypost-endpoint

Use cases

  • —Accessing a premium API endpoint without needing API keys or subscriptions
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven programmatic access to paid services via x402 protocol

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto-native micropayments over traditional billing

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before purchasing
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume use cases where $0.02/request adds up without bulk discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/178 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/178
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but the actual functionality behind "Premium API Access" is undocumented. All docs/pricing/README pages return only a wallet-connect prompt with no technical content. No request or response schemas are available, making it impossible to know what this endpoint actually does.

Warnings

  • —The specific functionality of /api/v1/payments/178 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (docs, pricing, README) returned only 'Connect wallet' with no usable content.
  • —No request or response schema is available for any endpoint on this platform.
  • —The platform lists many endpoints (AI, finance, utilities) but none have documented input/output contracts.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:35:25Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/c3rBwR
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart