x402basequality 0.30

x402-payable API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/generate/resource/105

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general utility services. All endpoints are pay-per-call using USDC on the Base network, with no API keys, no rate limits, and no sign-up required. The specific endpoint at `/api/v1/generate/resource/105` is listed as "Premium API Access" and accepts POST requests settled via x402 with USDC on Base.

The x402 challenge for this endpoint advertises a maxAmountRequired of 20,000 base units of USDC (which uses 6 decimals), equating to $0.02 per request. Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base. The endpoint is live and returns a proper 402 challenge.

The platform also advertises sibling endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02/request price point. However, documentation is extremely sparse: the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no actual technical documentation, request/response schemas, or usage examples. Without documentation it is unclear what request body this specific resource expects or what it returns.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-endpointjson-response

Use cases

  • —Programmatic access to utility/generation services without API key management
  • —Agent-driven workflows that need on-demand paid API calls settled in USDC on Base
  • —Exploring x402 payment protocol integrations with low per-request costs

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that need keyless, pay-per-use API access on Base
  • —Low-cost micropayment API consumption without subscriptions

Not for

  • —Production workloads requiring documented request/response schemas
  • —Use cases needing guaranteed SLAs or support channels
  • —Users who cannot pay with USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/105 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/generate/resource/105
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it exists and accepts payment. However, there is zero documentation on what this specific resource does, what request body it expects, or what it returns. The /docs, /pricing, /api, and /README pages are all empty beyond a wallet connect prompt. The listing title 'Premium API Access' is generic and uninformative. Without schemas or examples, this is effectively a stub.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content
  • —No request or response schema provided for this endpoint
  • —The purpose of resource/105 is unknown — 'Premium API Access' is a generic label
  • —No OpenAPI spec or ai-plugin manifest found
  • —Cannot verify what the endpoint actually returns upon successful payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:47:16Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/mgAEJJ
x402-payable API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart