Crypto token data for QNT via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides token data for QNT (Quant) through the x402 payment protocol. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure APIs, all priced at $0.02 per request and settled in USDC on the Base network. No API keys or rate limits are required — callers simply attach an x402 payment header to each POST request.
The specific endpoint `/api/v1/tokens/QNT` sits under the Finance & Web3 category of the platform. While the crawled landing page lists related endpoints like `/api/v1/crypto/quotes` and `/api/v1/finance/prices`, the `/api/v1/tokens/QNT` path suggests it returns token-specific data for the QNT asset. The x402 challenge confirms the endpoint is live, accepts USDC (contract 0x8335…2913 on Base), and charges a maximum of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).
Documentation beyond the landing page is extremely thin — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response schema, and no description of the response payload. Consequently, the exact fields returned by this endpoint are unknown and must be discovered by making a paid call.
Capabilities
Use cases
- —Fetching current QNT (Quant) token data for portfolio tracking or trading bots
- —Integrating real-time token information into Web3 dashboards without managing API keys
- —Agent-driven crypto research where per-call micropayments replace subscription plans
Fit
Best for
- —Developers who want keyless, pay-per-call access to token data
- —AI agents that can settle x402 payments autonomously on Base
- —Low-volume or bursty workloads where a $0.02/request model beats a monthly subscription
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk pricing
- —Users who need comprehensive historical OHLCV data (no evidence this endpoint provides it)
- —Non-crypto callers unfamiliar with x402 payment flows
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/QNT \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and all documentation pages return only a wallet-connect stub. The actual data returned is unknown.
Warnings
- —No OpenAPI or schema documentation available — response format is entirely undocumented
- —All doc/pricing/README pages return only a 'Connect wallet' prompt with no technical content
- —The exact fields and structure of the QNT token response must be inferred or discovered by paying for a call
- —The platform lists many diverse API categories (AI, analytics, geocoding, etc.) all at the same price, which may indicate placeholder or thin implementations
Citations
- —Endpoint returns 402 with x402 challenge, confirming it is livehttps://lowpaymentfee.com/api/v1/tokens/QNT
- —Price is $0.02 per request (20000 base units of USDC with 6 decimals) on Base networkhttps://lowpaymentfee.com/api/v1/tokens/QNT
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/tokens/QNT
- —Platform advertises no API keys, no rate limits, $0.02/request pricing across all endpointshttps://lowpaymentfee.com