Berkshire Hathaway (BRK.B) earnings data via pay-per-call x402 endpoint on Base.
What it does
This endpoint at lowpaymentfee.com provides earnings data for Berkshire Hathaway Class B shares (ticker BRK.B) through the x402 payment protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no subscriptions, and no rate limits. The endpoint accepts POST requests and returns JSON.
The provider, lowpaymentfee.com, operates a broader catalog of pay-per-request APIs spanning finance, analytics, AI/ML, crypto, and utility services, all priced at $0.02 per call and settled in USDC on Base. This specific endpoint sits under the Finance & Web3 category alongside price feeds, exchange rates, token quotes, and gas estimates.
Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a valid x402 402 challenge), but the exact request body format and response structure for earnings data are unknown and must be discovered by the caller.
Capabilities
Use cases
- —Retrieving Berkshire Hathaway (BRK.B) earnings data for financial analysis
- —Programmatic access to stock earnings without API key management
- —Agent-driven portfolio research that needs on-demand earnings lookups
Fit
Best for
- —Developers or agents needing quick BRK.B earnings data without subscriptions
- —x402-compatible agents that can pay per request in USDC on Base
- —Lightweight financial data retrieval without rate-limit concerns
Not for
- —Bulk historical earnings across many tickers (only BRK.B at this endpoint)
- —Users who need detailed API documentation or guaranteed response schemas before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/finance/BRK.B/earnings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no examples, and all documentation pages are empty stubs. The actual data content and format are entirely unknown.
Warnings
- —No API documentation available — /docs, /api, /pricing, and /README pages all return only a wallet-connect prompt with no content.
- —No OpenAPI or output schema provided; request body format and response structure are unknown.
- —Earnings data scope, freshness, and source are undocumented — data quality cannot be verified.
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base network.https://lowpaymentfee.com/api/v1/finance/BRK.B/earnings
- —The provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base network.https://lowpaymentfee.com
- —The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Base.https://lowpaymentfee.com
- —Finance & Web3 category includes price feeds, exchange rates, token quotes, and gas estimates alongside this endpoint.https://lowpaymentfee.com