x402basequality 0.25

Pay-per-call API platform on Base (USDC) 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/messages/154

What it does

lowpaymentfee.com is an x402-enabled API platform that provides a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/messages/154` is listed as "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is handled via the x402 protocol — no API keys, accounts, or rate limits are required; callers simply attach an X-PAYMENT header with a valid payment proof.

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 endpoints are uniformly priced at $0.02 per request.

The specific functionality behind `/api/v1/messages/154` is not documented beyond the label "Premium API Access." There is no OpenAPI schema, no request/response examples, and the crawled documentation pages (pricing, README, API) returned only a "Connect wallet" prompt with no additional content. Prospective callers should be aware that the actual behavior of this particular endpoint is unclear from available materials.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a pay-per-call API without needing an account or API key
  • —Agent-driven workflows that settle per-request costs in USDC on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers exploring x402 protocol integrations
  • —Agents that need keyless, pay-as-you-go API access
  • —Low-volume callers who want no subscription commitments

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/messages/154 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/messages/154
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and no documentation explaining what /api/v1/messages/154 actually does. The crawled pages beyond the homepage returned no useful content. This is effectively a stub listing.

Warnings

  • —No documentation available for the specific endpoint /api/v1/messages/154 — its actual functionality is unknown
  • —No OpenAPI or JSON schema provided; request and response formats are undocumented
  • —Crawled /pricing, /README, and /api pages returned only 'Connect wallet' with no content
  • —The endpoint name 'Premium API Access' is generic and does not describe functionality

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:09:04Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/ka52MM
Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart