x402basequality 0.30

Pay-per-request data import endpoint on Base via x402, priced at $0.02 per call in USDC.

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

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints settled via the x402 protocol on the Base network using USDC. The specific endpoint at `/api/v1/import` is labeled "Premium API Access" and accepts HTTP POST requests. Payment is $0.02 per call (20,000 base units of USDC with 6 decimals), settled on-chain to a specified wallet address. No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform advertises endpoints across four categories: Data & Analytics (metrics, reports, 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 listed at the same $0.02/request price point.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/import` endpoint actually accepts or returns. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is unclear what data or functionality the import endpoint provides.

Capabilities

x402-paymentusdc-settlementbase-networkhttp-postpay-per-requestdata-import

Use cases

  • —Importing data via a pay-per-request model without API key management
  • —Agent-driven workflows that need on-chain payment settlement per API call
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol on Base
  • —Agents that need keyless, pay-as-you-go API access
  • —Low-cost per-request data operations settled in USDC

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume batch operations where per-request pricing is inefficient
  • —Anyone requiring non-crypto payment methods

Quick start

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

Endpoint

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

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network details. However, documentation is effectively nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no explanation of what the /api/v1/import endpoint actually does or accepts. This is essentially a stub listing.

Warnings

  • —No documentation available — all doc/pricing/API/README pages render only 'Connect wallet'
  • —No OpenAPI or input/output schema provided for the /api/v1/import endpoint
  • —The purpose and expected payload of the 'import' endpoint is completely undocumented
  • —Cannot verify what data or functionality this endpoint actually provides

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:22:49Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/zd2mBe
Pay-per-request data import endpoint on Base via x402, priced at $0.02 per call in USDC. — Clawmart · Clawmart