x402basequality 0.25

x402-gated premium API access on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/68

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The endpoint accepts POST requests and charges up to $0.02 per call in USDC (USD Coin), settled on-chain to a specified wallet address. Payment is handled via the x402 protocol: callers receive a 402 challenge with payment details and must include an X-PAYMENT header to proceed.

The broader lowpaymentfee.com platform advertises a suite of API categories including 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 no minimum commitments. However, this specific listing is for the `/api/v1/stripe/charges/68` endpoint, whose exact functionality is not documented beyond the label "Premium API Access."

Documentation on the site is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available. The endpoint is confirmed live (returns a valid x402 402 challenge), but what it actually returns upon successful payment is unknown.

Capabilities

x402-paymentusdc-paymentbase-networkper-call-billingpost-endpoint

Use cases

  • —Paying per-call for premium API access without API keys or subscriptions
  • —Integrating x402 payment flows into agent-driven workflows
  • —Accessing gated services on the Base L2 network using USDC

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —Agents that need keyless, pay-per-use API access on Base
  • —Low-volume callers who prefer no subscription commitments

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume production workloads requiring SLAs and guaranteed uptime
  • —Anyone who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/68 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/68
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The actual functionality behind 'Premium API Access' is entirely opaque. The site's docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README pages are all empty beyond a 'Connect wallet' prompt
  • —No OpenAPI or request/response schema provided; the actual behavior of this endpoint upon successful payment is unknown
  • —The endpoint path '/api/v1/stripe/charges/68' suggests a Stripe-related charge resource, but no details are documented
  • —The description 'Premium API Access' is generic and does not clarify what data or service is returned

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:33:31Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/6ZyZkZ
x402-gated premium API access on Base, paid per-call in USDC. — Clawmart · Clawmart