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 #57) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all settled on the Base network using USDC.
The specific resource `/api/v1/audit/logs/57` is labeled "Premium API Access" and accepts POST requests. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment on Base. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout window.
The platform advertises a simple pricing model of $0.02 per request across all endpoints, with no API keys, no rate limits, no minimums, and instant access. Documentation pages exist at `/docs`, `/pricing`, and `/api` but currently render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available for this or any other endpoint on the platform. The actual data returned by the audit logs endpoint is unknown — the description "Premium API Access" is generic and does not clarify what audit information is provided.
Capabilities
Use cases
- —Retrieving audit log entry #57 via a single micropayment
- —Programmatic access to audit data without API key registration
- —Agent-driven data retrieval with inline USDC payment on Base
Fit
Best for
- —Developers wanting keyless, pay-per-use API 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 response schemas before integrating
- —Bulk audit log retrieval across many entries (only log #57 is exposed at this URL)
- —Users without USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/57 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the endpoint description is entirely generic ('Premium API Access'). The actual data returned is unknown, making integration speculative.
Warnings
- —No OpenAPI or JSON schema available for request or response bodies
- —Documentation pages (/docs, /pricing, /api, /README) all render only 'Connect wallet' with no content
- —The endpoint path '/api/v1/audit/logs/57' suggests a specific log entry but no context is given about what audit data is returned
- —The description 'Premium API Access' is generic and does not describe the actual resource
- —This specific audit-log endpoint is not listed on the homepage's API catalog — it may be unlisted or experimental
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/57
- —Platform pricing is $0.02 per request with no API keys, no rate limits, no minimumshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/audit/logs/57
- —Documentation pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs