x402basequality 0.35

Premium API access endpoint on Base via x402, paying per-request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/apikeys/23

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at `/api/v1/apikeys/23`, payable per-request via the x402 protocol on the Base network using USDC. The x402 challenge is live and returns a 402 with an exact-scheme payment requirement of 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a timeout of 300 seconds.

The broader lowpaymentfee.com platform advertises a suite of APIs across several categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and instant access.

However, this specific endpoint (`/api/v1/apikeys/23`) is described only as "Premium API Access" with no further documentation on what it returns or what input it expects. The docs, pricing, and README pages on the site are gated behind a wallet connection and yield no additional content. Without schema details or example responses, the exact functionality of this particular endpoint remains unclear.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-pricingapi-key-generation

Use cases

  • —Purchasing premium API access or API keys via a single micropayment
  • —Programmatic agent-driven acquisition of API credentials
  • —Pay-per-use access to platform services without pre-registration

Fit

Best for

  • —Agents or scripts that need instant, keyless API access via crypto payment
  • —Developers who want to avoid subscription commitments and pay per call
  • —Web3-native applications settling on Base L2

Not for

  • —Users who need detailed documentation or guaranteed SLAs before purchasing
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/apikeys/23 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/apikeys/23
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented input/output format, no example responses, and the docs pages are empty (wallet-gated). The specific purpose of the /api/v1/apikeys/23 endpoint beyond 'Premium API Access' is unknown.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —Docs, pricing, and README pages are gated behind wallet connection and provide no content
  • —The exact functionality and response format of /api/v1/apikeys/23 is undocumented
  • —The endpoint path suggests API key generation but this is inferred, not confirmed

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:19:55Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/q5DrUS
Premium API access endpoint on Base via x402, paying per-request in USDC. — Clawmart · Clawmart