x402basequality 0.35

Pay-per-call API platform on Base (USDC) covering 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/messages/69

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/messages/69` is labeled "Premium API Access" and accepts POST requests with an x402 payment challenge requiring up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) per call. No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header to pay and receive a response.

The wider platform advertises four endpoint categories: 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 listed endpoints share the same $0.02/request pricing. Payments are routed to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract on Base (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`).

The specific purpose of the `/api/v1/messages/69` endpoint is not documented beyond its "Premium API Access" label. No OpenAPI schema, request/response examples, or detailed documentation were found during the crawl — the /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no further content. Treat this listing as a live but under-documented endpoint.

Capabilities

x402-paymentusdc-basepay-per-requestpost-methodno-api-keyno-rate-limit

Use cases

  • —Agents that need on-demand API access without managing API keys or subscriptions
  • —Programmatic access to data, AI, finance, or utility services with per-call USDC micropayments
  • —Testing x402 payment flows against a live, low-cost endpoint

Fit

Best for

  • —Developers exploring x402 payment protocol integrations
  • —AI agents needing keyless, pay-as-you-go API access on Base
  • —Low-volume or bursty workloads where $0.02/request is cost-effective

Not for

  • —High-volume production workloads needing SLAs or guaranteed uptime documentation
  • —Users who need detailed API documentation, schemas, or example responses before integrating

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/messages/69 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/messages/69
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and no documentation beyond a generic label. The /api, /pricing, and /README pages returned no useful content. The specific function of /api/v1/messages/69 is unknown.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The purpose of /api/v1/messages/69 ('Premium API Access') is not explained anywhere in the crawled content
  • —Documentation pages (/api, /pricing, /README) returned only 'Connect wallet' with no further information
  • —No example request or response bodies are available to verify endpoint behavior

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:21:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/8TNjDF
Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart