x402basequality 0.35

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/trades/13

What it does

lowpaymentfee.com is an x402-protocol API platform that gates a broad set of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint `/api/v1/trades/13` is listed as "Premium API Access" and accepts POST requests. The x402 challenge advertises a max amount of 20,000 base units of USDC (0x8335…), which at 6 decimals equals $0.02 per call — consistent with the site's uniform $0.02/request pricing.

The platform advertises four categories of APIs: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text 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 pricing and require no API keys, no rate limits, and no commitments — just an x402-compatible payment header per request.

Documentation is extremely thin. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/trades/13` endpoint actually returns. The endpoint is live (returns a proper 402 challenge), but without documentation it is unclear what input parameters it expects or what data it provides.

Capabilities

x402-paymentusdc-baseper-request-micropaymentpost-endpointjson-responseno-api-keyno-rate-limit

Use cases

  • —Accessing trade data via a single micropayment without API key registration
  • —Programmatic agents purchasing API calls on-the-fly using x402 protocol
  • —Exploring low-friction pay-per-use API access on Base network

Fit

Best for

  • —Agents or developers wanting zero-signup, pay-per-call API access
  • —x402-compatible wallets and clients on Base
  • —Use cases where per-request billing is preferred over subscriptions

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who need bulk pricing or subscription discounts
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/13 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/13
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what the /api/v1/trades/13 endpoint actually returns. Effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or schema describing request parameters or response format for /api/v1/trades/13
  • —Purpose of the specific /api/v1/trades/13 endpoint is unknown — 'Premium API Access' is not descriptive
  • —The broader platform lists many endpoint categories but none have documented schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:31:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/MENmed
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart