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/48

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/48` is listed as "Premium API Access" and requires up to 20,000 base units of USDC (i.e., $0.02) per call. Payment is handled via the x402 exact scheme — no API keys, no rate limits, and no subscriptions are needed.

The broader platform advertises four categories of endpoints: 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 the same $0.02/request price point. The x402 challenge was successfully captured, confirming the endpoint is live and accepting POST requests.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available. The exact functionality behind the `/api/v1/stripe/charges/48` path is unclear; the name "Premium API Access" and the path segment "stripe/charges" suggest it may relate to Stripe payment processing, but this cannot be confirmed from available materials.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keypost-endpoint

Use cases

  • —Paying for API access without creating accounts or managing API keys
  • —Making per-request micropayments for data or utility services on Base
  • —Integrating x402-compatible agents with pay-as-you-go endpoints

Fit

Best for

  • —Developers wanting zero-signup API access via crypto micropayments
  • —AI agents that support x402 payment protocol
  • —Users who prefer pay-per-call pricing without subscriptions

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who need bulk/discounted pricing
  • —Developers who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/48 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/48
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and confirms pricing and payment details, but documentation is effectively nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the purpose of this specific endpoint ('stripe/charges/48') is ambiguous. The listing is essentially a stub with confirmed liveness.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all return only 'Connect wallet'
  • —No OpenAPI or request/response schema provided
  • —The endpoint path '/api/v1/stripe/charges/48' with description 'Premium API Access' is ambiguous — actual functionality is unknown
  • —No examples of expected request body or response format

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:38:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Uz9yxA
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request via USDC. — Clawmart · Clawmart