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" via the x402 payment protocol on the Base network. It is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories — all priced at $0.02 per request paid in USDC (USD Coin) on Base.
The specific endpoint `/api/v1/claims/91` is listed under the generic title "Premium API Access" and accepts HTTP POST requests. The x402 challenge confirms it is live, requiring a maximum of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals → $0.02) per call. Payment is made via the x402 exact scheme with no API keys, rate limits, or upfront commitments. The timeout window is 300 seconds.
However, the actual functionality behind this particular `/claims/91` endpoint is unclear. The platform's landing page lists many distinct API paths (analytics, AI, finance, utilities), but `/api/v1/claims/91` does not appear among them, and no documentation, request/response schemas, or examples are available. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. Without knowing what data or service this endpoint returns, agents should treat it as an opaque paid endpoint until more documentation surfaces.
Capabilities
Use cases
- —Paying per-request for premium data or services without managing API keys
- —Integrating x402-compatible agents with a low-cost paid endpoint on Base
- —Testing x402 payment flows against a live endpoint
Fit
Best for
- —Agents that support x402 payment protocol on Base
- —Developers exploring pay-per-call API models with USDC micropayments
- —Use cases where no-signup, no-rate-limit access is preferred
Not for
- —Users who need documented request/response schemas before integrating
- —High-volume use cases where per-request pricing may add up without bulk discounts
- —Anyone needing to understand the exact data returned before paying
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/claims/91 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and network. However, the specific functionality of /api/v1/claims/91 is undocumented — it does not appear on the site's own API listing, no request/response schema is provided, and all documentation pages render only a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —The endpoint path /api/v1/claims/91 is not listed among the platform's advertised APIs — its actual functionality is unknown.
- —No request body schema or response schema is documented anywhere.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no usable content.
- —Without knowing what this endpoint returns, callers risk paying $0.02 for an unknown or unhelpful response.
Citations
- —The x402 challenge requires maxAmountRequired of 20000 base units of USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02.https://lowpaymentfee.com/api/v1/claims/91
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The platform lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories.https://lowpaymentfee.com
- —Documentation pages render only a 'Connect wallet' prompt with no further content.https://lowpaymentfee.com/docs