x402-gated premium API endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/claims/87` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific endpoint is labeled "Premium API Access" and accepts POST requests, returning JSON responses. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 exact payment scheme.
The platform advertises a flat $0.02 per request across all endpoints, with no API keys, no rate limits, and no minimum commitments required. The x402 challenge captured for this endpoint shows a `maxAmountRequired` of 20000 base units of USDC (6 decimals), which equals $0.02 — consistent with the advertised pricing. The payment timeout is 300 seconds.
However, the specific functionality of the `/api/v1/claims/87` endpoint is unclear. The site's landing page lists categories of APIs (analytics, AI, finance, utilities) but does not include a "claims" endpoint in its public catalog. No OpenAPI schema, detailed documentation, or example request/response payloads are available — the docs, pricing, and README pages all render only a "Connect wallet" prompt with no additional content. The actual behavior behind this endpoint cannot be determined from the available material.
Capabilities
Use cases
- —Accessing a pay-per-request API without needing API keys or subscriptions
- —Making programmatic calls settled in USDC on the Base L2 network
- —Integrating x402-compatible payment flows into agent workflows
Fit
Best for
- —Developers wanting zero-commitment, pay-as-you-go API access
- —AI agents with x402-compatible payment capabilities
- —Users who prefer crypto-native micropayments over traditional billing
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —Anyone requiring free or trial access to evaluate endpoint behavior
- —Use cases requiring high-throughput with predictable bulk pricing
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/claims/87 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, the specific purpose of /api/v1/claims/87 is undocumented, no request/response schema is available, and the docs pages are empty. The endpoint's actual functionality is unknown.
Warnings
- —The /api/v1/claims/87 path is not listed in the site's public API catalog — its purpose is unclear.
- —Documentation pages (/docs, /pricing, /README) return only a 'Connect wallet' prompt with no usable content.
- —No OpenAPI spec, request schema, or response examples are available for this endpoint.
- —Without knowing what 'claims/87' does, callers cannot construct meaningful requests.
Citations
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —The x402 challenge shows maxAmountRequired of 20000 base units of USDC on Base with a 300-second timeout.https://lowpaymentfee.com/api/v1/claims/87
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/claims/87