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/188` 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 maximum 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. The response MIME type is application/json.
However, the specific functionality of the `/api/v1/accounts/188` path is unclear. It does not appear in the site's listed API catalog, which covers analytics, AI, finance, and utility endpoints. The description simply reads "Premium API Access" with no further detail on what data or service this particular account endpoint returns. Documentation pages (/docs, /pricing, /README) all rendered only a "Connect wallet" prompt with no substantive content. Without an OpenAPI spec, request/response schemas, or documentation, the actual behavior of this endpoint remains opaque.
Capabilities
Use cases
- —Programmatic access to a premium API resource with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Exploring x402 payment protocol integrations with low-cost endpoints
Fit
Best for
- —Developers experimenting with x402 payment flows
- —Agents needing keyless pay-per-call API access
- —Users who want to avoid subscriptions and pay only per request
Not for
- —Users who need detailed documentation or OpenAPI specs before integrating
- —Anyone requiring non-crypto payment methods
- —Use cases needing guaranteed SLAs or support
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/188 \
-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 the specific functionality of /api/v1/accounts/188 is undocumented. No OpenAPI spec, no request/response schema, and all doc pages render only 'Connect wallet'. The purpose of this particular endpoint cannot be determined from available material.
Warnings
- —The specific endpoint /api/v1/accounts/188 is not listed in the site's public API catalog — its purpose is unknown.
- —All documentation pages (/docs, /pricing, /README, /api) returned only a 'Connect wallet' prompt with no usable content.
- —No OpenAPI spec or request/response schema is available; integration requires trial and error.
- —The platform lists many endpoint categories (AI, analytics, finance, utils) but none match the /accounts/ path pattern.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/accounts/188
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/accounts/188
- —Documentation pages render only 'Connect wallet' with no substantive content.https://lowpaymentfee.com/docs