Pay-per-call audit log endpoint on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to audit log data (resource ID 86) 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 given USDC's 6 decimals).
The provider, lowpaymentfee.com, hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments. The specific endpoint listed here (/api/v1/audit/logs/86) falls under what appears to be an audit-log or logging category, though the provider's landing page does not list it among its featured API groups.
Documentation is extremely sparse. The docs, API, pricing, 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 crawled material. The endpoint is confirmed live — it returns a valid x402 402 challenge — but the actual payload structure and response format are unknown.
Capabilities
Use cases
- —Retrieving audit log entries for compliance or monitoring purposes
- —Programmatic access to activity records via pay-per-call without API key management
- —Agent-driven log retrieval settled instantly on Base L2
Fit
Best for
- —Developers needing keyless, pay-per-use audit log access
- —AI agents that can settle x402 USDC payments on Base
- —Users who want no-commitment, no-rate-limit API access
Not for
- —Users needing bulk or streaming log exports (no batch endpoint documented)
- —Anyone requiring detailed API documentation or guaranteed SLAs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/86 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the specific audit-logs endpoint is not even listed on the provider's landing page. Effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response bodies
- —The /api/v1/audit/logs/86 endpoint is not listed among the provider's advertised APIs, making its purpose and data format unclear
- —Provider appears to be a generic demo or template site; actual data quality and reliability are unknown
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired 20000 USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/86
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/audit/logs/86
- —Docs, API, pricing, and README pages render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs