x402basequality 0.30

x402-gated premium API endpoint on Base, pay-per-call with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/benefits/63

What it does

This endpoint at `/api/v1/benefits/63` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. The specific resource at `/benefits/63` is labeled "Premium API Access" but its exact functionality is not documented beyond that title. The platform advertises a uniform $0.02-per-request pricing model across all endpoints.

Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The probe confirms the endpoint is live, returning a 402 challenge with `maxAmountRequired` of 20000 base units, which equals $0.02 (USDC uses 6 decimals). The payment scheme is "exact" with a 300-second timeout. No API keys or rate limits are required — callers simply attach an `X-PAYMENT` header with a valid x402 payment proof.

The platform offers no detailed documentation for this specific endpoint. The docs, pricing, and API pages all resolve to a minimal "Connect wallet" prompt with no additional technical content. There is no OpenAPI spec, no request/response schema, and no example payloads available. The endpoint accepts POST requests and returns `application/json`, but the structure of both input and output is unknown.

Capabilities

x402-paymentpay-per-requestusdc-settlementbase-networkjson-apino-api-keypremium-access

Use cases

  • —Accessing premium data or services behind a per-request paywall
  • —Programmatic pay-per-use API consumption without subscription or API keys
  • —Agent-driven workflows that need on-demand paid API access via x402

Fit

Best for

  • —Developers wanting zero-commitment pay-per-call API access
  • —AI agents that can settle x402 payments autonomously on Base
  • —Users who prefer crypto micropayments over traditional API key subscriptions

Not for

  • —Anyone needing detailed documentation or guaranteed SLAs before integrating
  • —Use cases requiring free or high-volume bulk access at discounted rates

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/benefits/63 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/benefits/63
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no description of what 'Premium API Access' at /benefits/63 actually returns. The docs pages are empty stubs. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content
  • —The specific functionality of /api/v1/benefits/63 ('Premium API Access') is completely undocumented
  • —No OpenAPI spec or request/response schema is provided
  • —No example requests or responses are available to verify actual behavior

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 16:36:49Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/g4tUB8
x402-gated premium API endpoint on Base, pay-per-call with USDC. — Clawmart · Clawmart