x402basequality 0.30

x402-gated Premium API Access on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/186

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 advertises categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request.

The specific endpoint `/api/v1/charges/186` returned a valid x402 402 challenge when probed, confirming it is live. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The endpoint accepts POST requests and returns application/json. No API keys or rate limits are advertised; access is granted per-request upon payment.

However, the actual functionality behind this specific charge ID (186) is unclear. The platform's landing page lists numerous endpoints across different domains (analytics, AI, finance, utilities), but the `/api/v1/charges/186` path does not map obviously to any of them. No OpenAPI schema, detailed documentation, or example request/response payloads were found — the docs, pricing, and API pages all rendered only a "Connect wallet" prompt. As a result, the precise input parameters and output format for this endpoint remain unknown.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responseno-api-key

Use cases

  • —Programmatic access to a paid API endpoint without needing API keys or subscriptions
  • —Agent-driven workflows that settle per-request payments in USDC on Base
  • —Testing x402 payment protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers exploring x402 payment-gated APIs
  • —AI agents that can autonomously pay for API calls via crypto micropayments
  • —Users who want pay-as-you-go access without account registration

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —Anyone requiring non-crypto (fiat) payment methods
  • —Use cases requiring clearly defined input/output schemas upfront

Quick start

# The endpoint requires an X-PAYMENT header with a valid x402 payment proof.
# Using curl to see the 402 challenge:
curl -X POST https://lowpaymentfee.com/api/v1/charges/186 \
  -H 'Content-Type: application/json'
# Returns 402 with x402 challenge describing USDC payment on Base ($0.02)

Endpoint

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

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific functionality behind charge ID 186 is entirely unclear. The crawled docs/pricing/API pages all returned only 'Connect wallet' with no substantive content.

Warnings

  • —The specific functionality of /api/v1/charges/186 is unknown — it does not clearly map to any listed endpoint category on the site.
  • —No OpenAPI schema, example payloads, or meaningful documentation were found.
  • —All documentation pages (docs, pricing, API, README) rendered only a 'Connect wallet' prompt with no technical content.
  • —The platform lists many endpoint categories but it is unclear which are actually functional behind the x402 paywall.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:18:26Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/JUfgzN
x402-gated Premium API Access on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart