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/messages/165

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource path `/api/v1/messages/165` appears to be one entry in a broader catalog of pay-per-request APIs offered by the provider, spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or commitments required.

The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment timeout is 300 seconds. The response MIME type is application/json.

While the provider's landing page lists many endpoint categories (sentiment analysis, text summarization, geocoding, price feeds, etc.), this specific resource (`/api/v1/messages/165`) is labeled only as "Premium API Access" with no further documentation about what it returns or what input it expects. There is no OpenAPI spec, no request/response schema documentation, and the /api, /pricing, and /README pages all resolve to a minimal "Connect wallet" prompt. The actual functionality behind this particular endpoint is unclear from available materials.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven workflows that need keyless, on-demand API calls
  • —Programmatic access to paid endpoints without subscription commitments

Fit

Best for

  • —Developers or agents wanting frictionless pay-per-use API access
  • —x402-compatible clients on the Base network
  • —Low-volume or sporadic API consumers who prefer no subscriptions

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/messages/165 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/messages/165
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, no OpenAPI spec, no request/response schema, and the specific functionality of /api/v1/messages/165 is entirely undocumented. The broader site lists many endpoint categories but provides no detail on any of them.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The specific purpose of /api/v1/messages/165 is undocumented — 'Premium API Access' is generic
  • —The /api, /pricing, and /README pages all return only a 'Connect wallet' prompt with no useful content
  • —Cannot verify what data or service this endpoint actually provides

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:06:46Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/cbdkZ6
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart