x402basequality 0.25

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/120

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/accounts/120` appears to be one of many endpoints offered by the platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.

The endpoint is live and returns a valid x402 challenge on POST. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The x402 challenge specifies an "exact" payment scheme with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through per-request micropayment.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/accounts/120` endpoint specifically returns. The platform lists many other endpoints (analytics, AI, finance, utilities) but provides no detail on input parameters or response formats for any of them. The specific purpose of the `accounts/120` resource is unclear — it could be an account lookup, profile data, or something else entirely.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keyjson-response

Use cases

  • —Accessing premium API data without subscription or API key management
  • —Agent-driven per-request API consumption with crypto micropayments
  • —Programmatic access to account-level data via x402 payment flow

Fit

Best for

  • —Developers wanting zero-commitment pay-per-use API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/120 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/120
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is virtually no documentation: no OpenAPI schema, no request/response examples, and no explanation of what the accounts/120 endpoint actually returns. The docs pages are empty beyond a wallet-connect prompt. The listing is essentially a stub.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —The specific purpose and response format of /api/v1/accounts/120 is unknown
  • —No OpenAPI schema or request/response examples provided
  • —No robots.txt or agents.txt found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:08:58Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/Q5hdq8
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart