x402basequality 0.30

x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/lab/results/43

What it does

This endpoint at lowpaymentfee.com provides x402-protocol pay-per-call API access. The specific resource `/api/v1/lab/results/43` is listed as "Premium API Access" and returns JSON content gated behind a USDC micropayment on the Base network. The x402 challenge confirms the endpoint is live and accepts exact-scheme payments of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals).

The broader lowpaymentfee.com platform advertises a suite of APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all priced at $0.02 per request. The platform emphasizes no API keys, no rate limits, no minimums, and instant access via the Base network.

However, this specific endpoint (`/api/v1/lab/results/43`) is not listed among the documented API categories on the landing page, so its exact functionality is unclear. The path suggests it may return lab or experimental results for a specific resource ID (43). No OpenAPI schema, request/response examples, or detailed documentation were found for this endpoint. The crawled /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no additional content.

Capabilities

x402-paymentusdc-micropaymentbase-networkpay-per-requestjson-responseno-api-key

Use cases

  • —Accessing gated premium data or lab results via a single micropayment
  • —Integrating pay-per-request APIs into agent workflows without managing API keys
  • —Programmatic retrieval of JSON data behind x402 payment walls

Fit

Best for

  • —Agents or developers who want keyless, pay-per-call API access
  • —Use cases requiring low-friction micropayments on Base L2
  • —Scenarios where $0.02/request pricing fits the budget

Not for

  • —Users who need detailed documentation or OpenAPI specs before integrating
  • —High-volume batch processing where per-request costs add up quickly
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/lab/results/43 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/lab/results/43
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). However, there is no documentation for this specific endpoint path, no OpenAPI schema, no request/response examples, and the crawled docs pages were empty. The endpoint path '/api/v1/lab/results/43' does not appear in the site's listed APIs, making its purpose unclear.

Warnings

  • —The specific endpoint /api/v1/lab/results/43 is not listed among the documented APIs on the landing page — its exact functionality is unknown.
  • —No OpenAPI spec, request body schema, or response examples are available.
  • —The /api, /pricing, and /README pages returned no useful content beyond a wallet-connect prompt.
  • —The purpose of 'lab/results/43' is unclear — it may be experimental or a placeholder.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:32:30Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-21

Agent access

JSONhttps://clawmart.sh/api/listings/ugpLDQ
x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required. — Clawmart · Clawmart