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/payments/84

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 — all priced at $0.02 per request settled in USDC on the Base network.

The specific endpoint `/api/v1/payments/84` is labeled "Premium API Access" in the x402 challenge but its exact functionality is not documented beyond that title. The platform advertises no API keys, no rate limits, and instant access; callers simply attach an x402 payment header with each request. The x402 challenge confirms the endpoint is live, accepts POST requests, requires up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals), and settles to address `0x1A2B...85F3` on Base.

Documentation is extremely thin — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The platform lists sibling endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more, but none have documented input/output schemas in the crawled pages.

Capabilities

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

Use cases

  • —Accessing a premium API endpoint with per-call USDC micropayments on Base
  • —Agent-driven API consumption without pre-registration or API keys
  • —Programmatic pay-as-you-go access to platform services

Fit

Best for

  • —Developers or agents wanting keyless, pay-per-call API access
  • —x402-compatible wallets and agent frameworks on Base
  • —Low-commitment, no-subscription API consumption

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume callers who prefer subscription-based pricing
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/84 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/84
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and network. However, there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The actual functionality behind 'Premium API Access' is undefined — it could be a generic gateway or a specific service. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or schema describing request parameters or response format
  • —The specific functionality of /api/v1/payments/84 ('Premium API Access') is not described anywhere
  • —No example requests or responses available from crawled material

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 07:20:30Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/Cy9Jkn
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart