x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol on the Base network. It is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. Each request costs $0.02 in USDC (USD Coin), settled on-chain with no API keys, rate limits, or upfront commitments.
The specific endpoint `/api/v1/accounts/176` is listed under the umbrella title "Premium API Access." The probe confirms it is live, returning a 402 challenge with an x402 version 1 payload. The challenge specifies an exact payment scheme on the Base network, accepting USDC (contract 0x8335…2913) with a maxAmountRequired of 20000 base units (i.e., $0.02 given USDC's 6 decimals). The payment timeout is 300 seconds. The endpoint accepts POST requests and returns application/json.
However, the crawled documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation describing what the `/api/v1/accounts/176` endpoint actually returns or what input it expects. The platform's landing page lists many endpoints across different domains but does not clarify what "accounts/176" specifically provides. Prospective users should be aware that the actual functionality behind this endpoint is undocumented.
Capabilities
Use cases
- —Programmatic access to a pay-per-request API without managing API keys or subscriptions
- —Agent-driven workflows that settle per-call costs on-chain via x402
- —Exploring x402 protocol integration with USDC on Base
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that need keyless, on-chain-settled API access
- —Low-volume, pay-as-you-go API consumption at $0.02/call
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume use cases where per-request on-chain settlement adds overhead
- —Anyone needing clarity on what data the endpoint actually returns
Quick start
# 1. Send a POST to get the 402 challenge:
curl -X POST https://lowpaymentfee.com/api/v1/accounts/176
# Returns 402 with x402 payment challenge (USDC on Base, $0.02)
# 2. Construct X-PAYMENT header per x402 spec and resend.Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and network details. However, there is zero documentation on what the endpoint actually does — no schema, no examples, no description beyond the generic title 'Premium API Access.' All doc pages returned only 'Connect wallet' with no content.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README pages all render only a 'Connect wallet' prompt with no content.
- —The purpose and response format of /api/v1/accounts/176 are completely undocumented; 'Premium API Access' is the only description.
- —No OpenAPI schema, no request body schema, and no response examples are provided.
- —Cannot verify what data or service this endpoint actually delivers.
Citations
- —The endpoint returns a 402 challenge with x402 version 1, accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/accounts/176
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/176
- —Documentation pages (/docs, /api, /pricing, /README) contain only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs