Pay-per-call audit log access on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry 16) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per call and settled in USDC on the Base network.
The specific resource `/api/v1/audit/logs/16` is described as "Premium API Access" and accepts POST requests. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment of up to 20,000 base units (i.e., $0.02 given USDC's 6 decimals) to the provider's address on Base. No API keys, rate limits, or upfront commitments are required.
Documentation on the site 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 schema, no request/response examples, and no description of what the audit log endpoint actually returns. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what data to send or what response to expect.
Capabilities
Use cases
- —Retrieving audit log records on a per-request payment basis
- —Programmatic access to audit data without API key management
- —Agent-driven data retrieval with inline USDC micropayments
Fit
Best for
- —Developers or agents needing one-off audit log lookups without subscriptions
- —x402-compatible agents that can sign USDC payments on Base
- —Low-friction API access without registration or rate limits
Not for
- —Users who need detailed documentation or OpenAPI specs before integrating
- —Bulk audit log retrieval where per-request pricing would be expensive
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/16 \
-H "X-PAYMENT: <x402-signed-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC payments on Base. However, documentation is essentially nonexistent — all doc pages render only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the purpose of 'audit/logs/16' is unclear beyond the generic 'Premium API Access' label. This is effectively a stub listing.
Warnings
- —No documentation available — all doc/pricing/API/README pages show only 'Connect wallet'
- —No OpenAPI or request/response schema provided
- —The specific purpose and data returned by /api/v1/audit/logs/16 is undocumented
- —This endpoint path (audit/logs/16) is not listed among the provider's advertised APIs on the homepage, raising questions about its intended use
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/16
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/audit/logs/16