x402-gated audit-log endpoint on Base, pay-per-request with USDC at $0.02/call.
What it does
This endpoint at lowpaymentfee.com provides access to audit log data (resource ID 41) via the x402 payment protocol. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs, all gated behind x402 micropayments settled in USDC on the Base network.
The specific endpoint `/api/v1/audit/logs/41` is described as "Premium API Access" and accepts POST requests. Payment is handled inline via the X-PAYMENT header using the x402 "exact" scheme. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). The payment timeout is 300 seconds. No API keys or rate limits are advertised; access is granted purely through per-request payment.
Documentation is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema beyond the x402 challenge's outputSchema stub, and no description of what the audit log data actually contains. The endpoint is confirmed live (returns a valid 402 challenge), but the lack of documentation makes it difficult to know what data is returned or what POST body is expected.
Capabilities
Use cases
- —Retrieving audit log records via a single micropayment without needing an API key
- —Integrating pay-per-request audit data into automated agent workflows
- —Demonstrating x402 protocol payment flows on Base
Fit
Best for
- —Agents or developers wanting keyless, pay-per-call access to audit data
- —x402 protocol experimentation and integration testing
- —Low-volume, on-demand audit log retrieval
Not for
- —High-volume bulk audit log exports (no documented batch endpoint)
- —Users who need detailed API documentation or response schema before integrating
- —Non-crypto users who cannot pay in USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/41 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no description of what audit log data is actually returned. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or request/response schema provided; unknown what POST body is expected or what data is returned
- —The specific resource '/api/v1/audit/logs/41' is not listed on the provider's homepage among available APIs, raising questions about its intended use
- —Audit log content and structure are completely undocumented
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/41
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 6 decimals, so 20000 base units = $0.02https://lowpaymentfee.com