Pay-per-call stock quote API for MCD (McDonald's) settled in USDC on Base via x402.
What it does
This endpoint at lowpaymentfee.com provides stock data for the ticker MCD (McDonald's) via a simple POST request. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint `/api/v1/stocks/MCD` returns JSON and costs $0.02 per request (20,000 base units of USDC with 6 decimals). No API keys, subscriptions, or rate limits are advertised — callers simply attach an x402 payment header to each request. The maximum timeout for payment settlement is 300 seconds.
Documentation is extremely sparse. The provider's landing page lists available endpoints and pricing, but the /docs, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no response examples, and no description of what fields the stock data response contains. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data quality and response format remain unknown.
Capabilities
Use cases
- —Fetching current or recent stock data for McDonald's (MCD) in an automated trading or analytics pipeline
- —Agent-driven portfolio monitoring that pays per query with no subscription
- —Integrating real-time equity data into a crypto-native application using on-chain micropayments
Fit
Best for
- —Developers wanting zero-commitment, pay-as-you-go stock data
- —AI agents that can settle USDC payments on Base autonomously
- —Prototyping financial dashboards without API key management
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users needing comprehensive historical stock data or bulk downloads (single-ticker, per-call model)
- —Anyone who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/MCD \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no response examples, no documentation beyond a landing page listing, and no indication of what data fields are returned. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, and /README pages all show only a wallet-connect prompt with no content
- —No OpenAPI or response schema provided; the actual response format for stock data is unknown
- —No information on data source, update frequency, or coverage (only the MCD ticker path is probed)
- —Provider offers a very broad set of unrelated APIs (AI, geocoding, crypto gas, stocks) all at the same price, which may indicate a thin wrapper or placeholder service
Citations
- —Endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/MCD
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/MCD
- —Payment timeout is 300 secondshttps://lowpaymentfee.com/api/v1/stocks/MCD