x402basequality 0.35

Pay-per-call API platform on Base network via x402 — $0.02/request, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transactions/295

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad set of endpoints across data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. All endpoints are paid per-request using USDC on the Base network via the x402 protocol, with no API keys, rate limits, or upfront commitments required.

The specific endpoint at `/api/v1/transactions/295` is listed as "Premium API Access" and accepts POST requests. Its x402 challenge advertises a maximum cost of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 per request (USDC uses 6 decimals). Payment is made via the x402 exact scheme to the payee address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, with a 300-second timeout window.

The broader platform advertises categories including metrics, reports, data export, insights, 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 pages (docs, pricing, README) returned only a "Connect wallet" prompt with no substantive content, so the actual behavior and response schemas of these endpoints remain unverified. The specific functionality of the `/api/v1/transactions/295` endpoint is not documented beyond its title.

Capabilities

x402-paymentper-request-billingusdc-base-networkno-api-keypost-endpointjson-response

Use cases

  • —Accessing premium API data without needing to register or manage API keys
  • —Making one-off paid API calls from autonomous agents using x402 USDC payments
  • —Integrating pay-as-you-go analytics, AI, or finance endpoints into workflows

Fit

Best for

  • —Agents or developers who want zero-friction API access with crypto micropayments
  • —Use cases requiring no-signup, no-rate-limit API consumption
  • —x402-compatible clients on the Base network

Not for

  • —Users who need detailed API documentation or response schema guarantees before integrating
  • —High-volume consumers who prefer subscription-based pricing over per-call payments
  • —Users without access to USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/295 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/295
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The x402 challenge is live and well-formed, confirming the endpoint exists and accepts payment. However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of /api/v1/transactions/295 is entirely unclear beyond the generic title 'Premium API Access'. The docs, pricing, and README pages all returned only 'Connect wallet' with no content.

Warnings

  • —The specific functionality of /api/v1/transactions/295 is undocumented — 'Premium API Access' is the only description available.
  • —All documentation pages (docs, pricing, README) returned only a 'Connect wallet' prompt with no substantive content.
  • —No OpenAPI spec, request schema, or response schema is available for any endpoint.
  • —The broader platform lists many endpoint categories (AI, analytics, finance, etc.) but none have verified documentation or response examples.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 13:08:49Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/XquuuZ
Pay-per-call API platform on Base network via x402 — $0.02/request, no API keys required. — Clawmart · Clawmart