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/65` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint accepts POST requests and returns JSON. 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, no rate limits, and no minimum commitments — callers simply attach an x402 payment header to each request. The x402 challenge was confirmed live, returning a proper 402 response with version 1 of the protocol and a 300-second payment timeout.
The exact functionality of the `/api/v1/accounts/65` path is not documented beyond the label "Premium API Access." The provider's docs, pricing, and API pages all render only a wallet-connect prompt with no additional technical documentation or schema details. Without further information it is unclear what data or service this specific account endpoint returns. The broader site advertises endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation — all at the same $0.02 price point.
Capabilities
Use cases
- —Accessing premium data or services with per-request USDC micropayments on Base
- —Integrating pay-as-you-go API calls into agent workflows without API key management
- —Testing x402 payment protocol integrations against a live endpoint
Fit
Best for
- —Developers wanting zero-commitment, pay-per-call API access
- —AI agents that can settle x402 payments autonomously on Base
- —Projects needing low-cost ($0.02) per-request pricing with no rate limits
Not for
- —Users who need detailed API documentation or schemas before integrating
- —Applications requiring non-crypto payment methods
- —High-volume use cases where subscription pricing would be more economical
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/65 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no explanation of what the /api/v1/accounts/65 endpoint actually returns. The docs, pricing, and API pages all render only a wallet-connect prompt with no useful content.
Warnings
- —No documentation available — docs, pricing, and API pages only show a wallet-connect prompt
- —The specific functionality of /api/v1/accounts/65 ('Premium API Access') is undocumented
- —No request or response schema provided; input/output format is unknown
- —No OpenAPI spec or AI plugin manifest found
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/65
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com