x402basequality 0.30

x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/benefits/34

What it does

lowpaymentfee.com hosts a collection of x402-protocol pay-per-request API endpoints on the Base network, settling in USDC. The specific endpoint `/api/v1/benefits/34` is listed as "Premium API Access" and returns a 402 challenge requiring an exact-scheme USDC payment on Base. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the resource.

The broader lowpaymentfee.com platform offers endpoints 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 priced at $0.02 per request.

The `/api/v1/benefits/34` endpoint itself is not clearly documented beyond its title "Premium API Access." There is no OpenAPI schema, no detailed documentation of request/response formats, and the crawled docs, pricing, and API pages all returned only a "Connect wallet" prompt with no additional content. The endpoint is confirmed live via a valid 402 challenge, but the actual functionality behind this specific path is unknown. Callers should be aware that the response format (application/json) is declared in the challenge but no output schema details are provided.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-response

Use cases

  • —Accessing premium API data without traditional API key registration
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven programmatic access to gated endpoints via x402 protocol

Fit

Best for

  • —Developers who want keyless, pay-as-you-go API access
  • —AI agents with x402 payment capability on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume consumers who need bulk pricing or rate guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/benefits/34 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/benefits/34
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid 402 challenge, but there is no documentation of what /api/v1/benefits/34 actually returns, no OpenAPI schema, no request/response examples, and the docs pages are empty. The endpoint's purpose beyond 'Premium API Access' is entirely unknown.

Warnings

  • —No documentation available for this specific endpoint — purpose and response format are unknown
  • —All docs/pricing/API pages return only 'Connect wallet' with no usable content
  • —No OpenAPI or output schema provided beyond mimeType: application/json
  • —The path '/api/v1/benefits/34' does not correspond to any of the documented endpoint categories on the landing page

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 16:19:13Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/DX6e3F
x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request. — Clawmart · Clawmart