x402basequality 0.30

x402-gated premium API endpoint on Base, pay-per-request with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/generate/resource/77

What it does

This endpoint at lowpaymentfee.com is an x402-protocol gated API resource (resource ID 77) described by the provider as "Premium API Access." It accepts HTTP POST requests and requires payment via the x402 exact scheme on the Base network, settling in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 20,000 units of the USDC token (which, given USDC's 6 decimal places, equals $0.02 per request). The response MIME type is application/json.

The provider site lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All listed endpoints share the same $0.02/request pricing, require no API keys, advertise no rate limits, and settle on the Base network.

However, this specific endpoint (/api/v1/generate/resource/77) does not appear in the provider's publicly listed catalog, and no documentation, input schema, or example responses are available. The docs, pricing, API, and README pages all resolve to a minimal "Connect wallet" prompt with no further content. Without knowing what resource 77 actually returns, callers should treat this as an opaque premium endpoint whose behavior must be discovered experimentally.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responsehttp-post

Use cases

  • —Programmatic access to a premium resource via x402 micropayment without API keys
  • —Agent-driven pay-per-call workflows settling in USDC on Base
  • —Exploring x402 protocol integration with a low-cost test endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can sign USDC payments on Base
  • —Use cases needing keyless, pay-per-request API access

Not for

  • —Users who need detailed documentation or guaranteed SLAs before calling
  • —Applications requiring free or fiat-only payment methods
  • —Anyone needing to know the exact response schema before integration

Quick start

# 1. Send a POST with an X-PAYMENT header containing a signed x402 payment
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/77 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <signed-x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/generate/resource/77
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing/network details are clear from the challenge, but there is zero documentation on what resource 77 actually does, no input/output schema, no examples, and the docs pages are empty. The specific resource ID doesn't appear in the provider's public catalog.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
  • —Resource /api/v1/generate/resource/77 is not listed in the provider's public API catalog; its purpose is unknown.
  • —No input schema or example responses are provided; callers must discover behavior experimentally.
  • —Provider site appears to be a generic multi-category API storefront; quality and reliability of individual endpoints is unverified.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:50:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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