Stock market quote for NKE via x402 micropayment on Base, $0.02 per request in USDC.
What it does
This endpoint provides a real-time stock market quote for the ticker NKE (Nike, Inc.) through the x402 payment protocol. It is part of a broader suite of pay-per-call APIs hosted at lowpaymentfee.com, covering data analytics, AI/ML inference, finance, crypto, and utility services. Each request costs $0.02 in USDC on the Base network, with no API keys, rate limits, or subscriptions required.
The specific endpoint at `/api/v1/market/quote/NKE` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: the server responds with a 402 challenge containing the USDC asset address on Base (`0x8335…2913`) and a `maxAmountRequired` of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The caller attaches an `X-PAYMENT` header with a signed payment to the specified `payTo` address, and the server returns the quote data.
Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further detail. There is no OpenAPI schema, no example request/response payloads, and no description of the response fields. The endpoint is confirmed live (402 challenge captured), but the exact shape of the returned market quote data is unknown.
Capabilities
Use cases
- —Fetching a real-time stock quote for Nike (NKE) in an automated trading or research pipeline
- —Integrating pay-per-call market data into an AI agent workflow without managing API keys
- —Demonstrating x402 micropayment protocol usage for financial data access
Fit
Best for
- —Agents or bots that need on-demand stock quotes without subscription overhead
- —Developers experimenting with x402 micropayment-gated APIs
- —Low-volume or sporadic market data consumers who prefer pay-per-request pricing
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data feeds
- —Users who need comprehensive financial data (historical, options, fundamentals) — only a single-ticker quote endpoint is documented
- —Anyone without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/market/quote/NKE \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and the docs pages are empty stubs. The actual content of the market quote response is entirely unknown.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —Docs, pricing, and API pages render only 'Connect wallet' with no usable content
- —The endpoint path suggests a single-ticker quote (NKE); it is unclear whether other tickers are supported at similar paths
- —No example request or response bodies could be found
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/market/quote/NKE
- —USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/market/quote/NKE
- —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
- —The site lists finance endpoints including price feeds, exchange rates, token quotes, and gas estimateshttps://lowpaymentfee.com