x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request micropayments settled in USDC on the Base network. The specific endpoint at `/api/v1/generate/resource/134` is listed as "Premium API Access" and costs up to $0.02 per call (20,000 base units of USDC with 6 decimals). Payment is made via the x402 `X-PAYMENT` header with the `exact` scheme — no API keys, subscriptions, or rate limits are required.
The broader platform advertises four endpoint 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/Utilities (geocoding, validation, conversion, generation). All listed endpoints share the same $0.02 per-request pricing. However, the specific resource `/api/v1/generate/resource/134` does not clearly map to any of the named endpoints on the landing page, so its exact functionality is uncertain.
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 spec, no request/response schema, and no usage examples available from the crawl. The endpoint is confirmed live (returns a valid 402 challenge), but without documentation it is difficult to determine what data or service this specific resource provides.
Capabilities
Use cases
- —Programmatic access to utility/generation endpoints without API key management
- —Agent-driven workflows that need on-demand paid API calls settled in USDC on Base
- —Exploring x402 protocol integration for per-request payment flows
Fit
Best for
- —Developers experimenting with x402 micropayment protocol
- —Agents that can sign USDC payments on Base for per-call access
- —Use cases where avoiding API key provisioning and subscriptions is preferred
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume batch workloads where per-request payment overhead is impractical
- —Users without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/134 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid 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 specific resource ID 134 does not map to any named endpoint on the landing page, making its purpose unclear. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema definition found; request and response formats are unknown.
- —The resource path /api/v1/generate/resource/134 does not correspond to any named endpoint on the landing page; its exact functionality is unclear.
- —The platform lists many endpoint categories but it is unknown whether they are all functional or placeholders.
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/generate/resource/134
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/134
- —All listed endpoints priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure endpoint categorieshttps://lowpaymentfee.com