KYC verification endpoint on Base, pay-per-call via x402 with USDC.
What it does
This endpoint at lowpaymentfee.com provides a KYC (Know Your Customer) verification service accessible via the x402 payment protocol. The specific resource `/api/v1/kyc/verifications/52` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. Payment is handled inline via the x402 header mechanism — no API keys, accounts, or rate limits are required.
The hosting site lowpaymentfee.com offers a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request. However, the specific KYC verification endpoint's input schema, required POST body fields, and response format are not documented in the crawled material. The docs, pricing, and API pages all resolve to a minimal "Connect wallet" prompt with no further detail. Because of this, the exact request format and the nature of the verification (document check, identity lookup, etc.) remain unknown.
The endpoint is confirmed live: it returns a well-formed x402 challenge (HTTP 402) with version 1, accepting exact-scheme payments in USDC (contract 0x8335…) on Base, payable to address 0x1A2B…85F3, with a 300-second timeout.
Capabilities
Use cases
- —Verifying customer identity as part of onboarding flows
- —Performing KYC checks without managing API keys or subscriptions
- —Integrating compliance verification into agent-driven workflows
Fit
Best for
- —Developers needing on-demand KYC verification with crypto micropayments
- —AI agents that need to trigger identity checks without pre-registration
- —Projects on Base that want USDC-settled compliance APIs
Not for
- —Users who need detailed documentation or guaranteed SLAs before integration
- —Bulk KYC processing where per-request pricing is cost-prohibitive
- —Scenarios requiring fiat-only payment rails
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/52 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation of request/response schemas, no OpenAPI spec, and the docs pages are empty stubs. The purpose ('KYC verification') is only inferable from the URL path; actual functionality is unverified.
Warnings
- —No request body schema documented — required POST fields are unknown
- —No response schema or example available
- —Docs, pricing, and API pages all render only a 'Connect wallet' prompt with no content
- —The specific nature of the KYC verification (document, identity, etc.) is not described anywhere
- —The endpoint path includes a numeric ID (52) whose meaning is unclear
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/kyc/verifications/52
- —All APIs on the site are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/kyc/verifications/52