Historical stock price data for Mastercard (MA) via x402 micropayment on Base, $0.02/request.
What it does
This endpoint provides historical stock price data for Mastercard (ticker: MA) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs covering finance, AI/ML, data analytics, and infrastructure utilities. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request (20,000 base units with 6 decimals). No API keys, rate limits, or subscriptions are required — each call is individually paid via the X-PAYMENT header.
The endpoint accepts POST requests and returns JSON. However, the specific request body schema (e.g., date range parameters, granularity options) and response schema (e.g., OHLCV fields, timestamps) are not documented in the crawled material. The provider's landing page lists this endpoint under "Finance & Web3" alongside price feeds, exchange rates, token quotes, and gas estimates. Documentation pages (/docs, /api, /pricing, /README) all returned only a "Connect wallet" prompt with no substantive content.
Because the request/response schemas are undocumented, agents will need to experiment or rely on convention (e.g., sending a ticker symbol and date range). The endpoint is confirmed live — it returns a proper 402 x402 challenge. The platform advertises uniform $0.02 pricing across all endpoints with no minimums or commitments.
Capabilities
Use cases
- —Retrieving historical stock price data for Mastercard (MA) for backtesting or analysis
- —Building automated trading or portfolio monitoring agents that pay per query
- —Integrating stock history into AI pipelines without managing API keys or subscriptions
Fit
Best for
- —Agents needing on-demand stock history without subscription overhead
- —Low-volume or sporadic financial data queries paid per request
- —x402-native workflows settling in USDC on Base
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users needing comprehensive multi-ticker coverage (only MA ticker confirmed at this URL)
- —Anyone requiring detailed API documentation before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/MA/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation of request parameters, response schema, or examples. The docs, API, pricing, and README pages are all empty (wallet-connect only). Effectively a stub listing.
Warnings
- —No request or response schema documented — input parameters are unknown
- —All documentation pages (/docs, /api, /pricing, /README) returned no content
- —Only the MA ticker is confirmed at this URL path; unclear if other tickers are supported
- —No OpenAPI spec or AI plugin manifest available
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/stocks/MA/history
- —Uniform pricing of $0.02 per request across all endpoints, no API keys, no rate limitshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/stocks/MA/history