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 premium API access to audit log data (specifically log ID 45) 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-scheme challenge requiring up to 20,000 base units (i.e., $0.02 per request, since USDC uses 6 decimals).
The provider, lowpaymentfee.com, hosts a broader 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 minimum commitments. The specific endpoint probed here (`/api/v1/audit/logs/45`) is not listed on the provider's public landing page among the advertised categories, which suggests it may be an internal or less-publicized resource, or it could be a generic route pattern where the trailing ID selects a particular audit log entry.
Documentation is extremely sparse: the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint is confirmed live (returns a valid x402 402 challenge), but the actual response payload structure after successful payment is unknown.
Capabilities
Use cases
- —Retrieving audit log entries on a per-call payment basis without needing an API key
- —Programmatic access to audit trail data settled via USDC on Base
- —Agent-driven log retrieval where payment is handled inline via x402 protocol
Fit
Best for
- —Agents or services that need on-demand audit log access without subscription commitments
- —Developers experimenting with x402 pay-per-call patterns on Base
- —Low-volume consumers who prefer micropayments over monthly plans
Not for
- —High-volume audit log consumers who need bulk or streaming access at lower per-unit cost
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/45 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, but documentation is essentially nonexistent — no OpenAPI spec, no request/response schemas, no examples. The specific audit-log endpoint is not listed on the provider's own landing page. Without knowing the request body format or response structure, this is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available from the provider
- —The /docs, /pricing, /api, and /README pages all render only a wallet-connect prompt with no technical content
- —This specific endpoint (/api/v1/audit/logs/45) is not listed among the provider's publicly advertised APIs
- —Response payload structure after successful payment is completely unknown
- —No request body schema documented — unclear what POST body (if any) is expected
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/45
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/audit/logs/45
- —Provider advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Provider lists APIs in categories: Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructurehttps://lowpaymentfee.com
- —Documentation pages (/docs, /pricing, /api, /README) render only a Connect wallet prompthttps://lowpaymentfee.com/docs