Pay-per-call audit logs endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This x402-enabled endpoint at lowpaymentfee.com provides access to audit log data (specifically log ID 3) via a POST request. Payment is handled inline using the x402 protocol: callers attach a cryptographic payment header and the endpoint charges per request in USDC on the Base network.
The specific endpoint `/api/v1/audit/logs/3` is part of a broader platform that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request. The x402 challenge confirms the price as 20,000 base units of USDC (6 decimals), which equals $0.02. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the "exact" payment scheme.
Documentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but the actual shape of the audit log data returned after payment is unknown. The platform advertises no API keys, no rate limits, and instant access.
Capabilities
Use cases
- —Retrieving audit log entries on a per-call payment basis without needing an API key
- —Integrating pay-per-use audit data into automated agent workflows
- —Testing x402 protocol payment flows against a live endpoint
Fit
Best for
- —Agents or developers wanting keyless, pay-per-call audit log access
- —Exploring x402 protocol integrations on Base
- —Low-volume or sporadic audit data retrieval without subscription commitments
Not for
- —High-volume audit log ingestion where per-call pricing becomes expensive
- —Use cases requiring detailed API documentation or guaranteed SLAs
- —Users who need audit logs in non-JSON formats or with complex query parameters
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/3 \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid x402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and no examples. The actual data returned by this audit logs endpoint is completely undocumented.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All documentation pages (/docs, /api, /pricing, /README) render only a 'Connect wallet' prompt with no content
- —The specific purpose and data shape of '/api/v1/audit/logs/3' is undocumented; 'audit logs' is the only descriptor
- —No information on data freshness, uptime guarantees, or error handling
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/audit/logs/3
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com