x402basequality 0.30

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request via USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/44

What it does

lowpaymentfee.com is an x402 protocol API marketplace that gates access to a variety of endpoints behind per-request USDC micropayments on the Base network. The specific endpoint at `/api/v1/stripe/charges/44` is listed as "Premium API Access" and accepts payment via the x402 exact scheme. The x402 challenge confirms the endpoint is live, requesting up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals).

The provider's landing page advertises four categories of APIs: 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 listed at $0.02 per request with no API keys, no rate limits, and instant access. However, the specific endpoint probed (`/api/v1/stripe/charges/44`) does not clearly map to any of the advertised categories — its path suggests a Stripe charges resource, and its description is simply "Premium API Access" with no further documentation.

Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what this endpoint actually returns. The endpoint accepts POST requests and returns application/json, but the actual input parameters and output format are unknown.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keyjson-responsepost-method

Use cases

  • —Paying per-request for API access without needing API keys or subscriptions
  • —Programmatic agent access to gated endpoints using x402 USDC micropayments
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers exploring x402 protocol micropayments
  • —AI agents that need keyless, pay-per-call API access on Base
  • —Projects wanting to avoid subscription commitments for API usage

Not for

  • —Users needing well-documented API contracts with clear input/output schemas
  • —Production workloads requiring SLA guarantees or support
  • —Users without USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/44 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/44
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. The specific endpoint path (/api/v1/stripe/charges/44) doesn't match any advertised API category, there's no input/output schema, and no examples. The listing is effectively a stub with confirmed liveness.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README pages all render only 'Connect wallet'
  • —The endpoint path '/api/v1/stripe/charges/44' does not correspond to any of the advertised API categories on the landing page
  • —No OpenAPI spec, no request schema, no response schema, and no usage examples are provided
  • —Actual functionality of this specific endpoint is unknown — 'Premium API Access' is the only description

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:30:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/E6L6vu
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request via USDC. — Clawmart · Clawmart