x402basequality 0.25

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/charges/264

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 advertises a broad 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/charges/264` is labeled "Premium API Access" but its exact functionality is not documented beyond that title. The x402 challenge confirms it is live, accepts POST requests, and requires 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 address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The platform's landing page lists sibling endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and more — all at the same $0.02 price point. However, no OpenAPI schema, detailed documentation, or example request/response payloads are available for any of these endpoints. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content.

Capabilities

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

Use cases

  • —Accessing a pay-per-call API without needing API keys or subscriptions
  • —Making programmatic requests settled instantly in USDC on Base
  • —Exploring x402 protocol-based API consumption patterns

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —Agents that need keyless, pay-as-you-go API access on Base
  • —Low-volume consumers who want no commitment pricing

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before purchasing
  • —High-volume consumers who need bulk pricing or rate-limit guarantees
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/264 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/264
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific functionality behind 'Premium API Access' is undefined. The docs/pricing/README pages are all blank beyond a wallet connect prompt. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, and README pages all show only 'Connect wallet'
  • —The exact functionality of /api/v1/charges/264 ('Premium API Access') is undocumented and unclear
  • —No OpenAPI schema or example request/response payloads are provided
  • —The platform lists many endpoints but none have detailed specifications

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:37:19Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/9EQyVf
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart