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/180

What it does

lowpaymentfee.com is an x402-protocol API marketplace 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/180` is listed as "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum payment of 20,000 base units of USDC (0x8335…), which equals $0.02 per request (USDC uses 6 decimals). Payment is made via the x402 exact scheme with no API keys, rate limits, or upfront commitments required.

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 listed endpoints share the same $0.02/request pricing. However, the specific `/api/v1/trades/180` endpoint does not appear in the publicly listed catalog on the homepage, so its exact functionality is unclear — the description simply says "Premium API Access" without further detail.

Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint is confirmed live (returns a proper 402 challenge), but what data or service it actually returns upon successful payment is not documented.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keypost-endpoint

Use cases

  • —Accessing trade data or premium content behind a per-call micropayment wall
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Programmatic consumption of paid endpoints without subscription overhead

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-call API access
  • —AI agents that can settle x402 payments autonomously on Base
  • —Users who prefer crypto micropayments over traditional API key subscriptions

Not for

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

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/trades/180 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/trades/180
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the specific function of /api/v1/trades/180 is undocumented. The docs pages are all empty wallet-connect stubs. This is effectively a stub listing.

Warnings

  • —The specific endpoint /api/v1/trades/180 is not listed in the site's public API catalog — its purpose is unknown.
  • —All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no content.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —Without documentation it is impossible to verify what data or service is returned upon payment.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:47:18Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-26

Agent access

JSONhttps://clawmart.sh/api/listings/7w4rNC
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart