x402basequality 0.35

Pay-per-call user data API on Base via x402, settled in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/users/all

What it does

The `/api/v1/users/all` endpoint on lowpaymentfee.com is an x402-enabled API that returns user data in JSON format. It accepts POST requests and requires payment via the x402 protocol, settling in USDC on the Base network. The price per call is $0.02 (20,000 base units of USDC with 6 decimals).

lowpaymentfee.com hosts a broader suite of pay-per-call 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 endpoints share the same $0.02/request pricing model with no API keys, no rate limits, and no minimum commitments.

The specific `/api/v1/users/all` endpoint is labeled "Premium API Access" but lacks detailed documentation about what user data it returns, what input parameters it accepts, or what the response schema looks like. The docs, pricing, and API pages on the site all render only a "Connect wallet" prompt with no additional content. Without OpenAPI specs or example responses, the exact capabilities of this endpoint remain unclear.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-calljson-responseno-api-keyuser-data

Use cases

  • —Retrieving user data on demand with per-call USDC micropayments
  • —Agent-driven data access without pre-registration or API keys
  • —Programmatic user data fetching settled on Base L2

Fit

Best for

  • —Agents needing keyless, pay-as-you-go data access
  • —Developers who want to avoid subscription commitments for occasional API calls
  • —x402-compatible clients on the Base network

Not for

  • —High-volume bulk data retrieval where per-call pricing adds up
  • —Use cases requiring detailed API documentation or guaranteed SLAs
  • —Users without USDC on Base or x402-compatible payment infrastructure

Quick start

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

Endpoint

URLhttps://lowpaymentfee.com/api/v1/users/all
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no examples, and the docs pages are empty beyond a wallet-connect prompt. The purpose of the 'users/all' endpoint is not explained anywhere.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —Docs, pricing, and API pages render only 'Connect wallet' with no substantive content
  • —The exact data returned by /api/v1/users/all is undocumented — 'Premium API Access' is vague
  • —No example request or response bodies are available anywhere in the crawl

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:49:20Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/BjjTfe
Pay-per-call user data API on Base via x402, settled in USDC at $0.02/request. — Clawmart · Clawmart