Pay-per-call audit log 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 72) via a POST request. Payment is settled on the Base network using USDC (contract 0x8335…2913) through the x402 exact-payment scheme. The per-request cost is $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The endpoint is part of a broader platform (lowpaymentfee.com) that advertises multiple API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request. However, this specific listing covers the audit logs endpoint at /api/v1/audit/logs/72. The response MIME type is application/json. The x402 challenge specifies a maximum timeout of 300 seconds.
Documentation on the site is extremely sparse — the docs, pricing, API, 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 example payloads available. The actual data returned by this audit log endpoint is unknown beyond the fact that it produces JSON.
Capabilities
Use cases
- —Retrieving audit log records on a per-call payment basis without needing an API key
- —Integrating pay-per-use audit data into agent workflows that settle payments in USDC on Base
- —Accessing structured audit trail data via automated x402-compatible clients
Fit
Best for
- —Agents or services that need on-demand audit log access without subscription commitments
- —x402-compatible clients that can settle USDC payments on Base
- —Low-volume or sporadic audit data retrieval where per-call pricing is economical
Not for
- —High-volume audit log consumers who would benefit from bulk or subscription pricing
- —Users who need detailed API documentation or request/response schemas before integration
- —Callers without x402 payment capability or USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/72 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The purpose of 'audit/logs/72' is opaque — it's unclear what data is returned or what inputs are expected. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request body and response structure are completely unknown
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content
- —The specific endpoint /api/v1/audit/logs/72 is not listed among the site's advertised APIs, making its purpose unclear
- —The hardcoded log ID '72' in the path suggests this may be a single-resource endpoint rather than a general-purpose API
Citations
- —The x402 challenge returns maxAmountRequired of 20000 in USDC (6 decimals) on Base, equaling $0.02 per requesthttps://lowpaymentfee.com/api/v1/audit/logs/72
- —The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/audit/logs/72
- —Documentation pages render only a 'Connect wallet' prompt with no substantive contenthttps://lowpaymentfee.com/docs