x402basequality 0.35

Pay-per-call API platform on Base (USDC) 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/resource/33

What it does

lowpaymentfee.com is an x402-enabled API platform that provides a collection of endpoints spanning data analytics, AI/ML inference, finance/crypto market data, and general utility services. All endpoints are paid per request using USDC on the Base network via the x402 protocol — no API keys, no rate limits, and no subscriptions required.

The specific endpoint at `/api/resource/33` is listed as "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call (USDC uses 6 decimals). The site advertises a uniform $0.02/request pricing across all its endpoints. Categories of APIs available on the platform include: metrics and reports (analytics), sentiment analysis, text summarization, classification, embeddings (AI/ML), price feeds, exchange rates, token quotes, gas estimates (finance/crypto), and geocoding, validation, conversion, and generation (utilities).

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 documentation, and no usage examples available from the crawl. The endpoint is confirmed live (returns a valid 402 challenge), but without documentation it is unclear what request body `/api/resource/33` expects or what response it returns.

Capabilities

x402-paymentusdc-basepay-per-requestdata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datacrypto-quotesgeocodingutility-apis

Use cases

  • —Accessing AI inference (sentiment, summarization, classification, embeddings) without API key management
  • —Fetching real-time crypto prices, gas estimates, and exchange rates on a per-call basis
  • —Running data analytics queries and exporting reports with micropayments
  • —Geocoding, validation, and data conversion via utility endpoints

Fit

Best for

  • —Agents or bots that need keyless, pay-as-you-go API access
  • —Developers who want to avoid subscription commitments for occasional API calls
  • —Web3-native applications already operating on the Base network

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans
  • —Anyone without access to USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/resource/33 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/resource/33
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, documentation is effectively nonexistent — no OpenAPI spec, no request/response schemas, no examples. The specific purpose of /api/resource/33 is unknown beyond the generic label 'Premium API Access'. This is essentially a stub listing.

Warnings

  • —No OpenAPI spec or schema documentation available
  • —All documentation pages (/docs, /pricing, /README, /api) render only 'Connect wallet' with no content
  • —The specific function of /api/resource/33 is undocumented — it is unclear what it does or what request body it expects
  • —No response examples or error handling documentation available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:19:16Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/5m9vCC
Pay-per-call API platform on Base (USDC) offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart