x402basequality 0.30

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/112

What it does

lowpaymentfee.com is an x402-protocol API platform that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/trades/112` is listed as "Premium API Access" and accepts POST requests. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…), which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform advertises four categories of endpoints: 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 are priced at $0.02 per request. However, the specific `/api/v1/trades/112` endpoint does not clearly map to any of these listed categories, and no documentation describes what data or functionality it returns.

Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint is confirmed live (402 challenge captured), but the actual behavior behind the paywall is unknown.

Capabilities

x402-paymentusdc-baseper-request-micropaymentpost-endpointjson-response

Use cases

  • —Accessing trade-related data behind a per-request micropayment wall
  • —Programmatic pay-per-call API consumption without API keys
  • —Agent-driven workflows that need on-demand premium data access

Fit

Best for

  • —Developers wanting zero-commitment pay-per-use API access
  • —AI agents with x402 payment capability on Base
  • —Users who prefer no API key or subscription overhead

Not for

  • —Users needing detailed API documentation or schemas before purchasing
  • —High-volume consumers who need bulk pricing or rate guarantees
  • —Anyone without a Base-network USDC wallet or x402-compatible client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/112 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/112
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no description of what /api/v1/trades/112 actually returns. The docs pages are all empty wallet-connect stubs. This is effectively a stub listing.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README all return only a wallet connect prompt
  • —The endpoint path /api/v1/trades/112 does not appear in the site's listed API catalog, so its purpose is unknown
  • —No request or response schema is provided; callers cannot know what to send or what to expect
  • —No OpenAPI specification or ai-plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:32:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

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