x402basequality 0.25

x402-gated premium API endpoint on Base, pay-per-request with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/endpoint-44

What it does

This endpoint at `/api/endpoint-44` is part of lowpaymentfee.com, a platform offering a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The endpoint is labeled "Premium API Access" and accepts POST requests, returning application/json responses. Payment is handled via the x402 protocol on the Base network using USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).

The specific functionality of `/api/endpoint-44` is not documented — it does not correspond to any of the named endpoints listed on the provider's homepage (which use paths like `/api/v1/...` and `/api/v2/...`). The x402 challenge indicates a maximum payment of 20,000 units of USDC (likely 0.02 USDC given 6 decimals, consistent with the site's advertised $0.02/request pricing). The platform advertises no API keys, no rate limits, and instant access. Documentation pages (`/docs`, `/pricing`, `/README`) returned only a "Connect wallet" prompt with no substantive content.

Because the endpoint path does not match any documented API and no input/output schema is provided beyond the basic x402 challenge metadata, the actual capability of this specific endpoint remains unknown. Users should treat this as an opaque premium endpoint until further documentation is available.

Capabilities

x402-paymentusdc-paymentbase-networkpay-per-requesthttp-postjson-response

Use cases

  • —Programmatic access to a premium API endpoint via x402 micropayment on Base
  • —Agent-driven pay-per-call API consumption without API keys
  • —Demonstrating x402 protocol integration for USDC payments

Fit

Best for

  • —Developers exploring x402 protocol pay-per-request patterns
  • —AI agents that can handle x402 payment challenges natively
  • —Users who want keyless, on-demand API access paid in USDC

Not for

  • —Users who need well-documented endpoint schemas and behavior before paying
  • —High-volume use cases where per-request crypto payments add overhead
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-44
# Returns 402 with X-PAYMENT challenge; attach a valid x402 payment header (USDC on Base) to complete the request.

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-44
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (returns a valid 402 x402 challenge), but /api/endpoint-44 does not match any documented API on the site. No input/output schema, no documentation, and all doc pages return only 'Connect wallet'. The actual functionality is unknown, making this effectively a stub listing.

Warnings

  • —Endpoint path /api/endpoint-44 does not correspond to any documented API on the provider's homepage
  • —No input or output schema available beyond basic x402 challenge metadata
  • —All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no content
  • —Actual functionality of this endpoint is unknown — use with caution

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:35:00Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/RXQ6kW
x402-gated premium API endpoint on Base, pay-per-request with USDC. — Clawmart · Clawmart