x402-payable API suite on Base: AI, analytics, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com offers a collection of pay-per-call API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint at `/api/v1/generate/resource/180` is listed under "Premium API Access" and accepts POST requests settled in USDC (USD Coin) on Base. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (6 decimals), which equals $0.02 per request.
The broader platform advertises endpoints across four categories: 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 (geocoding, validation, conversion, generation). All endpoints are priced uniformly at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/generate/resource/180` endpoint actually generates or what input it expects. The endpoint is live (returns a valid 402 challenge), but without documentation it is unclear what payload to send or what response to expect.
Capabilities
Use cases
- —Programmatic resource generation via a single POST request with crypto micropayment
- —Agent-driven API consumption without pre-registration or API key management
- —Exploring x402 payment protocol integration on Base network
Fit
Best for
- —Developers experimenting with x402 payment-gated APIs
- —AI agents that need keyless, pay-per-call endpoint access
- —Projects requiring low-friction crypto-settled API calls on Base
Not for
- —Production workloads requiring documented request/response schemas
- —Users who need detailed API documentation or SDKs before integrating
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/180 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base at $0.02/request. However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The purpose of this specific endpoint ('generate/resource/180') is entirely undocumented.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema describing request parameters or response format for this endpoint.
- —The purpose of '/api/v1/generate/resource/180' is unknown — 'Premium API Access' is a generic label with no specifics.
- —Cannot verify what the endpoint actually returns without making a paid request.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/180
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/180