x402-gated account statements endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at lowpaymentfee.com provides access to account statement data behind an x402 paywall. The specific resource `/api/v1/accounts/21/statements` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. Payment is handled via the x402 protocol — no API keys, no subscriptions, just a per-request micropayment.
The broader lowpaymentfee.com platform advertises a suite of 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 rate limits or minimum commitments. However, the specific endpoint being listed here (`/api/v1/accounts/21/statements`) is described only as "Premium API Access" and its exact response schema and input parameters are not documented in the available crawl material.
The endpoint is confirmed live: it returns a proper x402 version 1 challenge with USDC (contract 0x8335…) on Base, paying to address 0x1A2B…85F3, with a 300-second timeout. No OpenAPI spec, detailed documentation, or example responses were found during the crawl — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content.
Capabilities
Use cases
- —Retrieving account statement data on a per-request payment basis
- —Integrating pay-per-call financial data into agent workflows
- —Accessing premium data without managing API keys or subscriptions
Fit
Best for
- —Agents or apps that need on-demand account statement retrieval
- —Developers wanting keyless, pay-as-you-go API access on Base
- —Crypto-native workflows that can settle USDC micropayments
Not for
- —Users who need detailed API documentation or schemas before integrating
- —High-volume consumers who need bulk pricing or rate-limit guarantees
- —Non-crypto users without a Base-compatible wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/21/statements \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no documented input/output schema, no example responses, and the docs pages are empty beyond a wallet-connect prompt. The purpose of this specific endpoint ('accounts/21/statements') is unclear beyond the generic 'Premium API Access' label.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —Docs, pricing, and API pages render only 'Connect wallet' with no usable content
- —The endpoint path includes a hardcoded account ID (21), suggesting it may be account-specific with unclear generalizability
- —Input parameters and response format are entirely undocumented
Citations
- —Endpoint returns x402 v1 challenge with USDC on Base, maxAmountRequired 20000 (= $0.02)https://lowpaymentfee.com/api/v1/accounts/21/statements
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/21/statements