x402basequality 0.40

Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/payments/76

What it does

lowpaymentfee.com is an x402-enabled API platform that provides a collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general utility services. All endpoints are paid per-request using USDC on the Base network via the x402 protocol — no API keys, no rate limits, and no subscriptions required.

The specific endpoint at `/api/v1/payments/76` is listed as "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call (USDC uses 6 decimals). The broader platform advertises a uniform $0.02/request pricing across all its endpoints.

The platform's other advertised endpoints include sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and data generation. Documentation pages exist but appear to require a wallet connection to view, so detailed schemas and response formats are not available from the crawl. The endpoint is confirmed live via a valid 402 challenge response.

Capabilities

x402-paymentper-request-pricingusdc-basedata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datacrypto-datageocodingutility-services

Use cases

  • —Accessing AI inference (sentiment, summarization, classification, embeddings) on a pay-per-call basis without API keys
  • —Fetching real-time crypto token quotes, gas estimates, and exchange rates
  • —Running geocoding, validation, or data conversion tasks with per-request USDC payments
  • —Exporting data or generating analytics reports via metered API calls

Fit

Best for

  • —Developers wanting zero-signup, pay-as-you-go API access
  • —Agents and bots that can settle payments via x402 on Base
  • —Projects needing low-cost micro-transactions for diverse API services

Not for

  • —Users who need detailed API documentation and response schemas before integrating
  • —High-volume consumers who prefer subscription-based pricing for cost savings
  • —Users without USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/76 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/payments/76",
  "body": {},
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402-payment-token>",
    "Content-Type": "application/json"
  }
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/76
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.40/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no response examples, and documentation pages are gated behind wallet connection, leaving request/response formats entirely unknown. The specific purpose of the '/payments/76' endpoint beyond 'Premium API Access' is unclear.

Warnings

  • —No OpenAPI or schema documentation available — all doc pages require wallet connection and returned no content
  • —The specific functionality of /api/v1/payments/76 ('Premium API Access') is not described; it may be a generic or placeholder endpoint
  • —Response format and expected request body are unknown — no examples or schemas were found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:17:12Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/VyGLsE