Pay-per-call premium API access on Base network via x402 protocol at $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/transfers/3` is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities.
The platform operates on a simple pay-per-request model with no API keys, no rate limits, and no commitments required. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge indicates a maxAmountRequired of 20000 base units, which equals $0.02 USD (USDC uses 6 decimals). The endpoint accepts POST requests and returns application/json responses.
While the landing page lists numerous endpoints across analytics, AI/ML, finance, and utility categories, the specific functionality of `/api/v1/transfers/3` is not clearly documented. The "transfers" path suggests it may relate to financial transfer operations, but no detailed documentation, request/response schemas, or examples are available from the crawled pages. The docs, API, pricing, and README pages all only show a "Connect wallet" prompt with no additional content.
Capabilities
Use cases
- —Programmatic access to transfer-related data or operations without subscription
- —Agent-driven API calls with per-request crypto payment
- —Integrating pay-as-you-go API services into automated workflows
Fit
Best for
- —Developers wanting no-commitment API access with crypto payments
- —AI agents that can settle x402 payments on Base
- —Users who prefer per-call pricing over monthly subscriptions
Not for
- —Users who need detailed API documentation before integrating
- —High-volume use cases where per-request pricing becomes expensive
- —Developers who cannot transact in USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/transfers/3 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for the specific /transfers/3 endpoint, no request/response schema, and no examples. The crawled docs pages are empty beyond a wallet connect prompt.
Warnings
- —No documentation available for the specific /api/v1/transfers/3 endpoint
- —No request or response schema provided
- —All doc/pricing/README pages only show 'Connect wallet' with no content
- —The 'transfers' endpoint purpose is unclear - not listed on the landing page's available APIs
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/transfers/3
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/transfers/3