x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/payments/352

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no commitments required.

The specific endpoint `/api/v1/payments/352` is listed as "Premium API Access" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) on Base (asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Payment is made via the `exact` scheme with a 300-second timeout. The response MIME type is `application/json`.

However, the exact functionality behind this particular endpoint path (`/payments/352`) is unclear. The landing page lists many specific APIs (sentiment analysis, geocoding, price feeds, etc.) but does not describe a `/payments/352` route. There is no OpenAPI spec, no detailed documentation, and the docs/pricing/API pages all render only a "Connect wallet" prompt with no further content. Without more information, it is impossible to determine what data or service this specific endpoint returns beyond the generic "Premium API Access" label.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Programmatic access to a pay-per-call API without needing API keys or subscriptions
  • —Agent-driven workflows that need on-demand API calls settled in USDC on Base
  • —Testing x402 payment protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol with minimal cost
  • —AI agents that need keyless, pay-per-use API access
  • —Users who want to avoid subscription commitments for occasional API calls

Not for

  • —Users who need detailed documentation or OpenAPI specs before integrating
  • —High-volume use cases where $0.02/request adds up significantly
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/352 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/352
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no documentation beyond a wallet-connect prompt, and no clarity on what this specific endpoint actually does. The generic label "Premium API Access" and the opaque /payments/352 path provide insufficient information for confident integration.

Warnings

  • —No OpenAPI or schema documentation available — docs pages render only 'Connect wallet'
  • —The exact functionality of /api/v1/payments/352 is undocumented; 'Premium API Access' is vague
  • —The landing page lists many endpoints but /payments/352 is not among them, raising questions about what it returns
  • —No example request or response bodies are available anywhere in the crawled material

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:04:41Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/32DCGe
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart