KYC verification endpoint on Base, paid per-call via x402 with USDC.
What it does
This endpoint at lowpaymentfee.com provides a KYC (Know Your Customer) verification service accessible at `/api/v1/kyc/verifications/55`. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint probed (`/api/v1/kyc/verifications/55`) returns a live 402 challenge requesting up to 20,000 base units of USDC (0.02 USD) per request via the "exact" scheme. The platform advertises a flat $0.02/request pricing model with no API keys, no rate limits, and instant access. The endpoint accepts HTTP POST and returns `application/json`.
Documentation is extremely sparse — the docs, pricing, API, and README pages all resolve to a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the KYC verification endpoint actually accepts as input or returns as output. The resource path includes a numeric ID (`55`), but it is unclear whether this refers to a specific verification record, a verification type, or something else. Without input/output schemas or usage examples, integrating this endpoint requires experimentation.
Capabilities
Use cases
- —Verifying customer identity as part of onboarding flows
- —Performing KYC checks without managing API keys or subscriptions
- —Integrating lightweight identity verification into Web3 applications
Fit
Best for
- —Developers needing simple pay-per-call KYC verification
- —Web3 projects that want to settle API costs in USDC on Base
- —Agents or bots that can pay via x402 without pre-registration
Not for
- —Teams requiring detailed API documentation and SLAs before integration
- —High-volume KYC pipelines needing bulk pricing or guaranteed uptime
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/55 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, but there is zero documentation on request/response schemas, no OpenAPI spec, and the docs pages are empty wallet-connect stubs. The purpose of the specific resource path (/55) is unexplained. Effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — input and output formats are unknown.
- —Docs, pricing, API, and README pages all render only a 'Connect wallet' prompt with no technical content.
- —The resource path includes a numeric ID (55) whose meaning is undocumented.
- —KYC/identity verification is a regulated category — no information on data handling, compliance certifications, or jurisdiction is provided.
- —The platform lists many diverse API categories but provides no evidence of actual backend functionality behind any of them.
Citations
- —The endpoint returns a live 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/kyc/verifications/55
- —Platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/kyc/verifications/55
- —Docs, pricing, API, and README pages show only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs