Historical stock data for BRK.B via x402 micropayment on Base network, $0.02 per request.
What it does
This endpoint provides historical stock price data for Berkshire Hathaway Class B (BRK.B) through the lowpaymentfee.com platform. It is part of a broader suite of finance, data, AI, and utility APIs all accessible via the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header using the x402 protocol (version 1), settling in USDC on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. No API keys, rate limits, or upfront commitments are required — each request is paid for individually.
The provider's landing page lists this endpoint under "Finance & Web3" alongside price feeds, exchange rates, token quotes, and gas estimates. Documentation pages beyond the landing page are sparse (returning only a "Connect wallet" prompt), so the exact request body schema and response format for historical stock data are not documented in the crawled material. Users should expect standard historical price fields (dates, open, high, low, close, volume) but this is inferred, not confirmed.
Capabilities
Use cases
- —Retrieving historical price data for BRK.B for backtesting or analysis
- —Integrating stock history into an AI agent workflow with per-call payment
- —Building dashboards that pull historical equity data without API key management
Fit
Best for
- —Agents or apps needing on-demand BRK.B historical data without subscriptions
- —Developers who want to pay per request with USDC on Base
- —Low-volume or sporadic stock data lookups where flat-rate plans are wasteful
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users who need historical data for thousands of tickers in a single call
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/BRK.B/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, documentation is essentially absent — all doc/pricing/API pages return only a wallet-connect prompt. No request body schema, response schema, or example payloads are available, so the actual data format is inferred. The listing is functional but sparse.
Warnings
- —No documentation available beyond the landing page; all doc URLs return only a 'Connect wallet' prompt.
- —Request body schema and response format for this stock history endpoint are unknown — no examples or OpenAPI spec provided.
- —The endpoint is specifically for BRK.B; it is unclear whether other ticker symbols are supported at similar paths.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/BRK.B/history
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/BRK.B/history
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The endpoint is listed under Finance & Web3 category alongside price feeds, exchange rates, token quotes, and gas estimateshttps://lowpaymentfee.com