x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.
What it does
lowpaymentfee.com is a pay-per-call API platform that gates its endpoints behind the x402 payment protocol on the Base network. The specific endpoint `/api/v1/claims/65` is labeled "Premium API Access" and accepts POST requests. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, with a maximum amount required of 20,000 base units — which, at 6 decimals for USDC, equals $0.02 per request.
The broader platform advertises a wide catalog of endpoints spanning 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 platform emphasizes no API keys, no rate limits, and instant access.
However, the specific `/api/v1/claims/65` endpoint's purpose is unclear — the description is simply "Premium API Access" with no further documentation about what data or functionality it returns. The docs, pricing, and API pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available from the crawl. Agents should treat this endpoint with caution until more information about its actual output is available.
Capabilities
Use cases
- —Paying per-call for API access without needing API keys or subscriptions
- —Programmatic agent access to gated endpoints using x402 USDC micropayments
- —Testing x402 protocol integration with a low-cost endpoint
Fit
Best for
- —Developers exploring x402 payment protocol integration
- —AI agents that need keyless, pay-per-call API access on Base
- —Low-cost experimentation with crypto-gated APIs
Not for
- —Users who need detailed documentation or guaranteed SLAs before calling
- —Anyone requiring free or non-crypto payment methods
- —Production workloads that depend on well-documented response schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/claims/65 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation about what this specific endpoint actually returns. No OpenAPI schema, no request/response examples, and all doc pages render only 'Connect wallet'. The purpose of /api/v1/claims/65 is entirely opaque.
Warnings
- —No documentation available — docs, pricing, and API pages all show only 'Connect wallet'
- —The specific purpose and response format of /api/v1/claims/65 is unknown
- —No OpenAPI schema or request/response examples provided
- —The broader platform lists many endpoints but none have detailed docs in the crawl
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/claims/65
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/claims/65
- —Platform advertises $0.02/request, no API keys, no rate limits, instant accesshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/claims/65
- —Docs, pricing, and API pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs