Get the current stock price for Mastercard (MA) via a pay-per-call x402 endpoint on Base.
What it does
This endpoint returns the current stock price for Mastercard (ticker: MA) as a JSON response, accessed through the x402 payment protocol on the Base network. Each request costs $0.02 in USDC (20,000 base units with 6 decimals), settled on-chain to the provider's wallet. No API keys or accounts are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The endpoint is part of a broader suite of paid APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/crypto market data, and utility services — all priced uniformly at $0.02 per request. The specific endpoint at `/api/v1/stocks/MA/price` falls under the finance category and is designed for retrieving real-time or near-real-time equity price data for the MA ticker.
Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format after payment must be inferred.
Capabilities
Use cases
- —Retrieve the current Mastercard (MA) stock price for portfolio tracking or display
- —Integrate real-time equity pricing into an AI agent's financial reasoning workflow
- —Build a pay-as-you-go stock price dashboard without managing API keys or subscriptions
Fit
Best for
- —Agents or apps needing occasional stock price lookups without subscription overhead
- —Developers who want to pay per call with USDC on Base rather than managing API keys
- —Quick prototyping of financial tools with zero onboarding friction
Not for
- —High-frequency trading or bulk historical stock data retrieval (no batch/historical endpoints documented)
- —Users who need comprehensive market data (options, fundamentals, order book) — only a single price endpoint is documented
- —Anyone without a Base-compatible USDC wallet for payment
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/MA/price \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"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 spec, no documented request/response schema, no example payloads, and all documentation pages beyond the landing page are empty. The actual data returned after payment is entirely unknown.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —All doc/pricing/README pages render only 'Connect wallet' with no content
- —No example request or response payloads are available; the response structure must be discovered empirically
- —Single-ticker endpoint (/stocks/MA/price) — unclear if other tickers are supported at different paths
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20,000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/MA/price
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/MA/price
- —All APIs on lowpaymentfee.com are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com