Pay-per-call audit log access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides premium API access to audit log data (specifically log ID 42 in this listing, but the provider hosts a broad suite of endpoints). It uses the x402 payment protocol on the Base network, accepting USDC (USD Coin) payments at $0.02 per request. No API keys, rate limits, or subscriptions are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The provider's landing page advertises a wide catalog of pay-per-call APIs spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point and settle on the Base L2 network using USDC.
The specific endpoint probed here (`/api/v1/audit/logs/42`) returned a valid 402 challenge with maxAmountRequired of 20000 base units of USDC (6 decimals), which equals $0.02. The endpoint accepts POST requests and returns application/json. Documentation beyond the landing page is sparse — the docs, API, pricing, and README pages all appear to require a wallet connection and render minimal content.
Capabilities
Use cases
- —Retrieving audit log entries on a per-call payment basis without needing an API key or subscription
- —Programmatic access to audit data for compliance or monitoring workflows
- —Agent-driven data retrieval where per-request crypto payment is preferred over traditional auth
Fit
Best for
- —Developers or agents who want instant, keyless API access paid per call
- —Use cases requiring audit log data without subscription commitments
- —Crypto-native workflows settling on Base L2 with USDC
Not for
- —High-volume consumers who need bulk pricing or subscription discounts
- —Users without access to USDC on the Base network
- —Anyone needing detailed API documentation or OpenAPI specs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/42 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response body format, no examples, and the docs/pricing/README pages are effectively empty (wallet-gated). The specific purpose of 'audit logs' is not explained anywhere.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —Docs, pricing, and README pages render only a 'Connect wallet' prompt with no useful content
- —The exact nature and contents of the audit log data are undocumented
- —The provider hosts many endpoints but none appear to have public documentation beyond the landing page listing
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/42
- —All endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/audit/logs/42
- —Docs, API, pricing, and README pages show only 'Connect wallet' with no additional contenthttps://lowpaymentfee.com/docs