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 an audit logs resource (`/api/v1/audit/logs/9`) 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 broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, 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 $0.02 per request with no API keys, no rate limits, and no minimum commitments.
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 documentation, and no usage examples available. The specific audit-logs endpoint being listed here is not featured on the landing page's catalog, so its exact purpose and response format are unclear beyond the generic "Premium API Access" label.
Capabilities
Use cases
- —Retrieving audit log records on a per-call payment basis
- —Programmatic access to audit trail data without subscription or API key
- —Agent-driven data retrieval with micropayment settlement on Base
Fit
Best for
- —Developers needing keyless, pay-as-you-go audit log access
- —AI agents that can settle x402 USDC payments on Base
- —Users who want no-commitment, per-request pricing
Not for
- —Users needing detailed API documentation or response schemas before integrating
- —High-volume consumers who would benefit from bulk/subscription pricing
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/9 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it accepts payments. 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 site's own catalog. The purpose and data returned are entirely opaque.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'
- —No OpenAPI or schema definition found for request or response payloads
- —The /api/v1/audit/logs/9 endpoint is not listed in the site's own API catalog, making its purpose unclear
- —Response format and fields are completely undocumented
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/audit/logs/9
- —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
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/audit/logs/9
- —Documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs