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/186

What it does

This endpoint at lowpaymentfee.com is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories. The specific endpoint `/api/v1/payments/186` is labeled "Premium API Access" and is gated by the x402 protocol on the Base network, accepting USDC payments.

The x402 challenge confirms the endpoint is live and requires a maximum of 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site's advertised flat pricing of $0.02/request across all endpoints. The platform advertises no API keys, no rate limits, and instant access — payment is the only authentication mechanism.

However, the actual functionality behind this specific endpoint path (`/payments/186`) is unclear. The site's landing page lists endpoints under categories like Data & Analytics, AI & ML, Finance & Web3, and Infrastructure, but `/api/v1/payments/186` does not appear among them. There is no OpenAPI schema, no detailed documentation (docs/pricing/README pages all render only a "Connect wallet" prompt), and no example request/response payloads available. The endpoint accepts POST requests and returns `application/json`, but beyond that the input parameters and response structure are unknown.

Capabilities

x402-payment-gatedusdc-base-networkpay-per-requestno-api-keyjson-responsehttp-post

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments
  • —Integrating pay-as-you-go API calls into agent workflows without API key management
  • —Programmatic access to gated services settled on Base L2

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —AI agents with x402-compatible payment capabilities
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or schemas before integrating
  • —High-volume use cases where per-request pricing may add up
  • —Users without USDC on Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/186 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/186
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific functionality of /api/v1/payments/186 is entirely unknown. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt.

Warnings

  • —The specific functionality of /api/v1/payments/186 is undocumented and unclear — it does not match any of the listed API categories on the site.
  • —No OpenAPI schema, example payloads, or detailed documentation available.
  • —All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no actual content.
  • —Input parameters and response format are completely unknown.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:45:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/2fXnyW
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart