x402basequality 0.30

Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/129

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/129` is listed as "Premium API Access" and charges up to 20,000 base units of USDC (i.e., $0.02 per request, since USDC uses 6 decimals). 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 multiple API categories including 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 listed at the same $0.02/request price point.

However, the specific endpoint probed here (`/api/v1/wire/129`) does not clearly map to any of the named API categories on the landing page. Its description is simply "Premium API Access" with no further documentation about what data or functionality it returns. The docs, pricing, and README pages all rendered only a "Connect wallet" prompt with no substantive content. Without documentation or example responses, the actual behavior of this endpoint is unknown.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a pay-per-call API without requiring API key registration
  • —Agent-driven workflows that settle per-request costs in USDC on Base
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol integrations
  • —AI agents that need keyless, pay-as-you-go API access
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone requiring non-crypto payment methods
  • —Production workloads that depend on well-documented response schemas

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/129 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/129
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC per request on Base). However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific endpoint's purpose ("Premium API Access" at /api/v1/wire/129) is entirely opaque. All doc pages returned only a wallet-connect prompt.

Warnings

  • —No documentation available — all doc/pricing/README pages render only 'Connect wallet' with no content
  • —The endpoint path /api/v1/wire/129 does not correspond to any named API on the landing page; its actual functionality is unknown
  • —No response schema or example output is available
  • —No OpenAPI specification found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:35:09Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/dxX9KA
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart