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/accounts/198

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 platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. The specific endpoint `/api/v1/accounts/198` is listed under the platform's premium access tier, accepting POST requests and settling payments in USDC on the Base network.

Pricing is $0.02 per request (the x402 challenge advertises a maxAmountRequired of 20000 base units of USDC, which has 6 decimals, equaling $0.02). The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header with each request. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base.

Documentation is extremely sparse. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. The exact functionality of the `/api/v1/accounts/198` endpoint is unclear — the description simply says "Premium API Access" with no schema for request body or response. The platform hosts many other endpoints (analytics, AI, finance, utilities) all at the same $0.02 price point, but details on what this specific accounts endpoint returns are not documented in the crawled material.

Capabilities

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

Use cases

  • —Accessing premium account data via a single paid API call
  • —Integrating pay-per-use API access into agent workflows without API keys
  • —Demonstrating x402 payment protocol usage on Base

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing keyless, pay-per-call API access
  • —Low-volume consumers who want no subscription commitments

Not for

  • —Users needing detailed API documentation before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone requiring non-USDC or non-Base payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/198 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/198
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation on what the endpoint actually does, no request/response schema, and all doc pages render only 'Connect wallet'. The specific purpose of /api/v1/accounts/198 is unknown.

Warnings

  • —No documentation available — all doc pages show only 'Connect wallet'
  • —No request or response schema provided for this endpoint
  • —The exact functionality of /api/v1/accounts/198 is undocumented
  • —Platform lists many endpoints but none have detailed specs in crawled content

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:46:07Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

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