Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry 19) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme.
The specific endpoint `/api/v1/audit/logs/19` is listed under the provider's "Premium API Access" label. The broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required. The x402 challenge for this endpoint advertises a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02.
Documentation on the site is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual data returned after payment is unknown. The audit logs endpoint does not appear in the homepage's listed API catalog, so its exact purpose and response format remain unclear.
Capabilities
Use cases
- —Retrieving audit log entries with per-call USDC micropayments
- —Programmatic access to log data without API key management
- —Agent-driven data retrieval settled on Base L2
Fit
Best for
- —Developers wanting keyless, pay-per-call audit log access
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed API documentation or schemas before integrating
- —Bulk audit log retrieval where per-call pricing would be expensive
- —Users without USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/19 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the audit logs endpoint isn't even listed on the homepage catalog. The actual data returned after payment is completely unknown.
Warnings
- —No API documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet'
- —No OpenAPI or schema definition found for request or response payloads
- —The /api/v1/audit/logs/19 endpoint is not listed in the homepage API catalog — its purpose and data format are unclear
- —Cannot verify what data is actually returned after successful payment
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/audit/logs/19
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/audit/logs/19
- —All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Documentation pages (/docs, /api, /pricing, /README) render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs