x402basequality 0.30

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/180

What it does

lowpaymentfee.com is an x402-protocol API platform that gates a variety of endpoints behind per-request USDC micropayments on the Base network. The specific endpoint at `/api/v1/accounts/180` is listed as "Premium API Access" and requires up to $0.02 in USDC per call (maxAmountRequired of 20,000 base units with 6 decimals = $0.02). Payment is made via the x402 exact scheme with no API keys, no rate limits, and no subscriptions required.

The broader platform advertises four categories of APIs: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request. The platform settles payments in USDC on the Base L2 network.

Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for what the `/api/v1/accounts/180` endpoint actually returns. The endpoint is live and responds with a valid x402 402 challenge, but the actual functionality behind this specific path is unclear from available materials.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keyjson-responsepost-method

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven API consumption without pre-registration or API keys
  • —Pay-as-you-go access to data, AI, finance, or utility endpoints

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —Applications requiring free or fiat-only payment methods
  • —High-volume use cases where per-request pricing may add up

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/180 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/180
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no OpenAPI schema, no documentation, no request/response examples, and the specific purpose of /api/v1/accounts/180 is entirely unclear. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No documentation available — all doc/pricing/API pages render only 'Connect wallet' with no content
  • —The specific purpose and response format of /api/v1/accounts/180 is unknown; 'Premium API Access' is the only description
  • —No OpenAPI schema or request/response examples are provided
  • —No robots.txt or agents.txt found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:36:25Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/UpMYZ4
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart