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 is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all gated via the x402 payment protocol on the Base network. The specific resource `/api/v1/generate/resource/170` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. It may correspond to the "Generation" utility endpoint listed on the site's homepage.
Payment is settled in USDC (contract `0x8335…2913` on Base) using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units, which at 6 decimals equals $0.02 USD. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The timeout window is 300 seconds.
Documentation is extremely sparse: the `/docs`, `/pricing`, `/api`, and `/README` pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The homepage lists 16 endpoints across four categories (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), all priced at $0.02 per request. Without documentation on what this specific resource returns or what POST body it expects, agents will need to experiment or contact the provider.
Capabilities
Use cases
- —Paying per-call for utility or generation services without managing API keys
- —Integrating x402-compatible agents that settle payments in USDC on Base
- —Accessing on-demand API resources with no subscription or rate limits
Fit
Best for
- —Agents and developers wanting zero-signup, pay-per-use API access
- —x402-compatible wallets and autonomous agents on Base
- —Low-volume or sporadic usage where subscriptions are wasteful
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-throughput production workloads where per-call pricing at $0.02 adds up
- —Anyone without a Base-compatible USDC wallet or x402 client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/170 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>" \
-d '{}'Endpoint
Quality
The endpoint is live (returns a valid x402 402 challenge) and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The purpose of this specific resource (resource/170) is unknown beyond the generic label 'Premium API Access'. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema describing what this endpoint accepts or returns.
- —The specific function of resource/170 is undocumented; 'Premium API Access' is a generic label.
- —No request body schema or response examples are available from any source.
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/generate/resource/170
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/generate/resource/170
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —16 endpoints listed across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com