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 via the x402 payment protocol. The specific resource `/api/v1/kyc/verifications/42` accepts POST requests and charges up to $0.02 per call in USDC on the Base network. No API keys or rate limits are required — callers simply attach an x402 payment header to each request.
The provider hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities, all priced at $0.02 per request. However, this specific listing covers the KYC verification endpoint. Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what input the KYC endpoint expects or what output it returns. The endpoint is confirmed live (returns a valid x402 402 challenge), but the lack of documentation makes integration difficult without experimentation.
Capabilities
Use cases
- —Verifying customer identity as part of onboarding flows
- —Compliance checks for financial or Web3 applications
- —Automated KYC screening triggered by agent workflows
Fit
Best for
- —Developers needing keyless, pay-per-call KYC verification
- —Web3 applications that can settle micropayments in USDC on Base
- —Agents that need on-demand identity checks without subscription commitments
Not for
- —Teams requiring detailed API documentation and integration guides before adoption
- —High-volume KYC pipelines needing batch processing or bulk discounts
- —Regulated environments that require a well-documented audit trail of the verification methodology
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/kyc/verifications/42 \
-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 OpenAPI schema, no request/response examples, and no meaningful documentation. The KYC endpoint's purpose is only inferable from the URL path; input/output formats are completely unknown.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no technical content.
- —No OpenAPI or schema describing request body or response format for the KYC endpoint.
- —The endpoint path includes a hardcoded ID '/42' — it is unclear whether this is parameterized or fixed.
- —KYC/identity verification is a regulated category; no information is provided about the verification methodology, data handling, or compliance certifications.
- —The provider lists many API categories on the landing page but none appear to include KYC, raising questions about this endpoint's maturity.
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/kyc/verifications/42
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/kyc/verifications/42
- —All APIs priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs