x402-gated account statements endpoint on Base, paid per-request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to account statements via a POST request to `/api/v1/accounts/16/statements`. It is part of a broader platform (lowpaymentfee.com) that offers dozens of x402-payable API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all settled on the Base network using USDC.
The specific endpoint probed here returns an x402 challenge requesting up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site's advertised flat pricing of $0.02/request across all endpoints. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no subscription required — callers simply attach an X-PAYMENT header with a valid payment proof.
Documentation on the site is extremely thin: the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint's purpose ("account statements") and expected input/output format are not documented beyond the title "Premium API Access" and the MIME type `application/json`. The platform appears to be a demonstration or early-stage x402 marketplace rather than a mature production API.
Capabilities
Use cases
- —Retrieving account statement data via a single paid API call
- —Demonstrating x402 payment protocol integration on Base
- —Agent-driven financial data retrieval with per-request USDC settlement
Fit
Best for
- —Developers experimenting with x402 payment flows on Base
- —AI agents that need to fetch account statements without API key provisioning
- —Prototyping pay-per-call microservice architectures
Not for
- —Production workloads requiring documented request/response schemas
- —High-volume bulk data export where per-request fees add up
- —Users who need detailed API documentation or SDKs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/16/statements \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI spec, no request/response examples, and the docs pages are empty stubs. The purpose of 'account statements' for 'account 16' is unexplained, making this effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response bodies
- —The endpoint path includes a hardcoded account ID (16); unclear if other account IDs are supported or what input is expected
- —Platform appears to be early-stage or a demo; production reliability is unknown
Citations
- —The endpoint returns an x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/16/statements
- —The platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/16/statements