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/accounts/20

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 provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no minimum commitments required.

The specific endpoint `/api/v1/accounts/20` accepts POST requests and returns `application/json`. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The timeout for payment settlement is 300 seconds.

Note that the exact functionality of this particular `/accounts/20` endpoint is not documented beyond the label "Premium API Access." The provider's landing page lists many other endpoints (metrics, reports, sentiment analysis, summarization, embeddings, price feeds, geocoding, etc.) but does not describe what the accounts endpoint returns. There is no OpenAPI spec, no request/response schema, and the docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional documentation. Prospective users should be aware that the actual response payload and accepted input parameters are unknown from available materials.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responsepost-methodno-api-key

Use cases

  • —Accessing a premium API endpoint without needing API keys or subscriptions
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven programmatic access to paid services via x402 protocol

Fit

Best for

  • —Developers wanting keyless, pay-as-you-go API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume use cases where per-request pricing may add up

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/20 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/20
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what the /accounts/20 endpoint actually does or returns. No OpenAPI spec, no request/response schema, and all doc pages render only a wallet-connect prompt. The listing is effectively a stub with confirmed pricing and liveness.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
  • —The exact purpose and response schema of /api/v1/accounts/20 ('Premium API Access') is undocumented.
  • —No OpenAPI or machine-readable schema is provided by the server.
  • —The provider lists many endpoints on its landing page but none match this specific /accounts/20 path, making its function unclear.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:16:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-30

Agent access

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