Pay-per-call audit log retrieval 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 ID 90) via a pay-per-request x402 payment flow. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per call (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The provider, lowpaymentfee.com, hosts a broader suite of APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion). All endpoints share the same $0.02/request pricing model and x402 payment mechanism on Base. However, this specific listing covers only the `/api/v1/audit/logs/90` endpoint.
Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned 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 data actually contains. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what fields to send in a POST body or what shape the response takes.
Capabilities
Use cases
- —Retrieving audit log entries on a per-request payment basis without needing an API key
- —Integrating pay-as-you-go audit data access into agent workflows
- —Programmatic compliance or monitoring checks against audit records
Fit
Best for
- —Agents or services that need occasional audit log lookups without subscription commitments
- —Developers experimenting with x402 payment-gated APIs on Base
- —Workflows requiring no-signup, instant-access audit data
Not for
- —High-volume audit log streaming where per-request costs would accumulate quickly
- —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/90 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages return only a wallet-connect prompt. The purpose of 'audit/logs/90' is unclear — it may be a demo or placeholder endpoint. Effectively a stub listing.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README all return only a 'Connect wallet' prompt with no content.
- —No OpenAPI or schema describing request body fields or response structure.
- —The specific endpoint '/api/v1/audit/logs/90' is not listed on the provider's homepage among their advertised APIs, raising questions about whether it is a production endpoint or a demo/test resource.
- —Response format and fields are entirely unknown; callers must experiment to discover the API contract.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/audit/logs/90
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/audit/logs/90
- —All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider advertises APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com