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/151` 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 in USDC (contract 0x8335…2913) on the Base network using the "exact" scheme. The max amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02. No API keys or rate limits are advertised; access is granted per-call upon payment. The timeout for payment settlement is 300 seconds.
Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema beyond the x402 outputSchema stub, and no description of what the `/api/v1/accounts/151` endpoint specifically returns. The platform's landing page lists many endpoints but provides no detail on input parameters or response formats for any of them. The exact purpose of the "accounts/151" resource is unknown — it could be account data retrieval, but this is speculative.
Capabilities
Use cases
- —Accessing premium account data via a single micropayment without API key registration
- —Programmatic pay-per-call access from AI agents using x402 on Base
- —Exploring a low-friction API marketplace with no subscription commitment
Fit
Best for
- —Developers wanting zero-signup, pay-per-call API access
- —AI agents that can settle x402 payments in USDC on Base
- —Users who prefer no rate limits and no API key management
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
- —High-volume consumers who need bulk pricing or subscription discounts
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/151 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, but there is virtually no documentation: no OpenAPI spec, no request/response examples, no description of what the accounts/151 resource actually provides. All doc pages return only 'Connect wallet'. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README pages all return only 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response format
- —The specific purpose of /api/v1/accounts/151 is unknown; 'Premium API Access' is the only description
- —No examples of successful responses are available
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/151
- —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/151
- —Documentation pages (/docs, /api, /pricing, /README) contain only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs