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/transfers/175

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. Every endpoint is priced at $0.02 per request, paid in USDC on the Base network with no API keys, no rate limits, and no upfront commitments. The x402 payment challenge is live and returns a standard 402 response with an "exact" scheme settlement.

The specific endpoint at `/api/v1/transfers/175` is listed as "Premium API Access" but the crawled site does not describe what this particular transfer endpoint returns or accepts. The site's landing page catalogs roughly 16 other endpoints across four categories (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), all at the same $0.02 price point. Documentation pages (/docs, /pricing, /README) returned only a "Connect wallet" prompt with no further technical detail, so input/output schemas, example payloads, and actual response formats are unknown.

The x402 challenge for this endpoint advertises a maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, 6 decimals), which equals $0.02. Settlement is to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 on Base, with a 300-second timeout. The endpoint accepts POST requests and is marked discoverable.

Capabilities

x402-paymentusdc-basepay-per-requestpost-methodjson-response

Use cases

  • —Agent-initiated API calls settled per-request in USDC on Base
  • —Accessing premium data or services without API key provisioning
  • —Programmatic pay-as-you-go access to analytics, AI, finance, or utility endpoints

Fit

Best for

  • —Developers or agents wanting zero-signup, pay-per-call API access
  • —x402-compatible wallets and agent frameworks on Base
  • —Low-cost micropayment experimentation ($0.02/call)

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —High-volume batch workloads where per-call pricing may add up
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/175 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/175
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no input/output schema, and no description of what the /transfers/175 endpoint actually does. The docs, pricing, and README pages all returned only 'Connect wallet' with no content. This is effectively a stub listing.

Warnings

  • —No documentation available — /docs, /pricing, and /README pages all return only a wallet-connect prompt
  • —The specific endpoint /api/v1/transfers/175 ('Premium API Access') is not listed among the site's advertised APIs; its purpose is unknown
  • —No input or output schema provided; request body format is entirely unknown
  • —No OpenAPI spec, ai-plugin manifest, or agents.txt discovered

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:04:13Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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