x402basequality 0.35

Premium API access via x402 micropayment on Base network, $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/apikeys/56

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is part of a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request, paid in USDC on the Base network.

The specific endpoint `/api/v1/apikeys/56` appears to be an API key provisioning or access endpoint. The x402 challenge confirms it accepts POST requests, charges a maximum of 20,000 base units of USDC (which equals $0.02 given USDC's 6 decimals), and settles on the Base L2 network using the "exact" payment scheme. No API keys or rate limits are advertised — access is gated purely by per-request micropayment.

Documentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what this specific endpoint returns or expects as input beyond a POST with JSON content type.

Capabilities

x402-paymentusdc-micropaymentbase-networkapi-key-provisioningper-request-billingno-rate-limits

Use cases

  • —Programmatically obtaining API keys or premium access tokens via micropayment
  • —Agent-driven access to gated API resources without pre-registration
  • —Pay-as-you-go API consumption without subscriptions or commitments

Fit

Best for

  • —AI agents needing instant, keyless API access via cryptocurrency micropayments
  • —Developers who want to avoid API key management and subscription overhead
  • —Applications requiring low-friction, per-call billing on Base L2

Not for

  • —Users who need detailed documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Users without access to USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/apikeys/56 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/apikeys/56
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of this specific endpoint (apikeys/56) is unclear beyond the generic 'Premium API Access' label.

Warnings

  • —No OpenAPI or schema documentation available
  • —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
  • —The specific function of /api/v1/apikeys/56 is unclear — it may provision API keys or grant access, but this is unconfirmed
  • —No request body schema or response examples are provided anywhere

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:18:36Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/TCeCtQ
Premium API access via x402 micropayment on Base network, $0.02/request in USDC. — Clawmart · Clawmart