x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The specific resource `/api/v1/claims/98` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints share a uniform $0.02-per-request pricing model settled in USDC (USD Coin) on Base.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the `exact` scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The timeout is 300 seconds. No API keys or rate limits are advertised; access is instant upon payment.
However, the specific functionality behind `/api/v1/claims/98` is unclear. The provider's landing page lists numerous endpoints across analytics, AI, finance, and utility categories, but none map directly to a `/claims/98` path. There is no OpenAPI spec, no detailed documentation (the docs, API, pricing, and README pages all returned only a "Connect wallet" prompt), and no request/response examples. The endpoint's actual input parameters and output format are unknown.
Capabilities
Use cases
- —Accessing premium data or services with per-request USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API key management
- —Programmatic pay-as-you-go access to various utility endpoints
Fit
Best for
- —Developers or agents wanting frictionless, keyless API access via x402
- —Crypto-native applications that can settle USDC on Base
- —Low-volume or exploratory usage where per-call pricing is preferable to subscriptions
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/claims/98 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
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 specific purpose of /api/v1/claims/98 is not described anywhere in the crawled material. This is effectively a stub listing.
Warnings
- —The specific functionality of /api/v1/claims/98 is undocumented — the path does not appear in the provider's listed endpoints.
- —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no substantive content.
- —No OpenAPI spec or request/response schema is available.
- —No examples of expected input or output could be found.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/claims/98
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Basehttps://lowpaymentfee.com
- —USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/claims/98
- —Provider lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com