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/134

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.

The specific endpoint `/api/v1/payments/134` is labeled "Premium API Access" in the x402 challenge but its exact functionality is not documented beyond that label. The platform advertises a keyless, no-rate-limit model: callers pay per request using USDC on the Base network (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02 per call. Payment is made via the `exact` scheme with a 300-second timeout.

The crawled documentation pages (docs, api, pricing, README) all returned only a "Connect wallet" prompt with no substantive content, so there is no detailed API documentation, request/response schema, or usage examples available. The landing page lists sibling endpoints across analytics, AI, finance, and utility domains, all at the same $0.02 price point. Without further documentation it is unclear what this specific endpoint returns or what input it expects beyond an HTTP POST request.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyhttp-post

Use cases

  • —Accessing a premium API resource with per-call USDC micropayments on Base
  • —Demonstrating x402 payment protocol integration for agent-to-agent commerce
  • —Keyless API consumption without signup or rate limits

Fit

Best for

  • —Developers experimenting with x402 payment-gated APIs
  • —Agents that can settle USDC micropayments on Base
  • —Use cases requiring no-signup, no-rate-limit API access

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —Applications requiring free or fiat-only payment methods
  • —High-volume workloads where $0.02/request adds up without bulk discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/134 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/134
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 request/response schema, and the specific functionality of this endpoint is undescribed. All doc pages return only 'Connect wallet' with no content.

Warnings

  • —No API documentation available — all doc pages return only a 'Connect wallet' prompt
  • —The specific functionality of /api/v1/payments/134 ('Premium API Access') is not described anywhere
  • —No request or response schema is provided beyond the x402 outputSchema stub
  • —The platform lists many endpoints but none have documented input/output contracts

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:36:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/3Qh87C
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart