Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/accounts/173` appears to be one of many endpoints offered by the platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint is live and returns a valid x402 challenge on POST. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a max amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys required, no rate limits advertised, and access is described as instant once payment is included in the X-PAYMENT header.
However, the specific functionality behind `/api/v1/accounts/173` is not documented beyond the generic label "Premium API Access." The platform's docs, pricing, and API pages all render only a "Connect wallet" prompt with no further detail. There is no OpenAPI spec, no request/response schema, and no examples available. The broader site lists many endpoints (analytics, AI, finance, utils) but does not clarify what this particular accounts endpoint returns or what input it expects.
Capabilities
Use cases
- —Accessing a premium API resource with per-call USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic account data retrieval (inferred from path)
Fit
Best for
- —Developers wanting keyless, pay-per-use API access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed documentation or OpenAPI specs before integration
- —Applications requiring free or subscription-based access
- —Anyone who needs to understand the exact response schema before paying
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/173 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what this specific endpoint does, what inputs it accepts, or what it returns. No OpenAPI spec, no examples, and the docs pages are empty beyond a wallet connect prompt. The listing is effectively a stub.
Warnings
- —No documentation available — docs, pricing, API, and README pages all render only 'Connect wallet' with no content.
- —The specific functionality of /api/v1/accounts/173 is unknown; 'Premium API Access' is a generic label applied across the platform.
- —No request or response schema is provided; callers cannot know what to send or expect back.
- —No OpenAPI specification or machine-readable API description found.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/173
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/173
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs