x402basequality 0.35

Pay-per-call API platform on Base network via x402 — $0.02/request in USDC, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/53

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a variety of endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network. The platform requires no API keys, no rate limits, and no upfront commitments — callers simply attach an x402 payment header with each request.

The specific endpoint at `/api/v1/accounts/53` is listed as "Premium API Access" and accepts POST requests. Its x402 challenge advertises a max amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The platform also hosts endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 price point.

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 schema, no request/response examples, and no detailed documentation for any endpoint. The actual functionality behind `/api/v1/accounts/53` is unclear — the description is generic ("Premium API Access") and no schema beyond the x402 challenge is provided.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keypost-endpointjson-response

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Programmatic access to analytics, AI, finance, or utility endpoints without subscriptions

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-use API access
  • —AI agents with x402-compatible payment capabilities
  • —Users who prefer crypto micropayments over traditional API key subscriptions

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume use cases where per-request pricing may add up compared to flat-rate plans
  • —Anyone without a Base-network USDC wallet or x402 client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/53 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/53
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and all documentation pages render only 'Connect wallet' with no useful content. The purpose of /api/v1/accounts/53 specifically is unknown beyond the generic label 'Premium API Access'.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided for any endpoint
  • —The specific functionality of /api/v1/accounts/53 ('Premium API Access') is unclear
  • —No examples of expected request body or response format

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:37:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/P4Mxst
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC, no API keys required. — Clawmart · Clawmart