x402basequality 0.35

Pay-per-call API suite on Base (USDC) covering 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/generate/resource/20

What it does

lowpaymentfee.com offers a collection of x402-enabled API endpoints spanning four categories: 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 are priced at $0.02 per request, paid in USDC on the Base network via the x402 protocol — no API keys, no rate limits, and no upfront commitments.

The specific endpoint at `/api/v1/generate/resource/20` is listed as "Premium API Access" and returns a standard x402 challenge with a maxAmountRequired of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals). Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the "exact" payment scheme. The endpoint accepts HTTP POST requests and returns `application/json` responses.

Documentation beyond the landing page is extremely thin — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The actual functionality behind each endpoint is unclear; the names are suggestive but unverified. Agents should treat this as a low-documentation provider and test endpoints carefully before relying on them in production workflows.

Capabilities

x402-paymentusdc-basepay-per-requestsentiment-analysistext-summarizationtext-classificationembeddingsgeocodingdata-exportprice-feedsexchange-ratesgas-estimatesvalidationconversion

Use cases

  • —Running sentiment analysis or text summarization without managing API keys or subscriptions
  • —Fetching real-time crypto gas estimates or token price quotes via micropayment
  • —Geocoding addresses or validating data on a per-request payment basis
  • —Generating embeddings for text classification or search pipelines
  • —Exporting data or retrieving analytics metrics with no rate limits

Fit

Best for

  • —Agents or developers who want zero-signup, pay-as-you-go API access
  • —Low-volume or bursty workloads where subscription pricing is wasteful
  • —Crypto-native applications already operating on the Base network

Not for

  • —High-volume production workloads requiring SLAs, documentation, or guaranteed uptime
  • —Users without USDC on Base or unfamiliar with x402 payment flows
  • —Applications needing well-documented request/response schemas for integration

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/20 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/generate/resource/20",
  "body": {},
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402-payment-token>",
    "Content-Type": "application/json"
  }
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/generate/resource/20
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no examples. The actual functionality behind 'Premium API Access' and the broader endpoint suite is unverifiable from available material.

Warnings

  • —No OpenAPI or schema documentation available — all endpoint behavior is unverified
  • —Docs, pricing, API, and README pages all render only 'Connect wallet' with no content
  • —The specific functionality of /api/v1/generate/resource/20 ('Premium API Access') is not described anywhere
  • —No response schema or example responses are documented for any endpoint
  • —Provider is anonymous — no company name, contact info, or terms of service found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:18:42Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/HQWXaD
Pay-per-call API suite on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart