x402basequality 0.35

x402-gated API platform on Base 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/v1/stripe/invoices/12

What it does

lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/stripe/invoices/12` is labeled "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is made via the x402 exact scheme — no API keys, no rate limits, and no subscriptions required.

The broader platform 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 listed endpoints share the same $0.02/request pricing. However, the specific endpoint being listed here (`/api/v1/stripe/invoices/12`) does not clearly map to any of these documented categories — its path suggests a Stripe invoice resource, but no further documentation or schema is available for it.

Documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schemas, supported parameters, and detailed behavior of this endpoint remain unknown.

Capabilities

x402-paymentusdc-baseper-request-micropaymentjson-responseno-api-keyno-rate-limit

Use cases

  • —Accessing premium API resources with per-call USDC micropayments on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Programmatic retrieval of invoice or payment-related data

Fit

Best for

  • —Developers who want no-signup, pay-per-call API access
  • —AI agents with x402-compatible wallets on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —Anyone without a Base-network USDC wallet
  • —High-volume consumers who would benefit from bulk pricing or subscriptions

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/12 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/invoices/12
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, no request/response examples, and the endpoint path (/api/v1/stripe/invoices/12) doesn't match any of the documented API categories. Effectively a stub listing.

Warnings

  • —No documentation available — all doc pages (/docs, /api, /pricing, /README) return only 'Connect wallet' with no content.
  • —No OpenAPI or request/response schema provided for this endpoint.
  • —The endpoint path '/api/v1/stripe/invoices/12' does not correspond to any of the documented API categories on the landing page; its actual functionality is unknown.
  • —The hardcoded '/12' in the path suggests a specific resource ID rather than a general-purpose endpoint.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:15:06Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/BYC55s
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart