Retrieve UNP earnings data via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides financial earnings data for the ticker "UNP" (Union Pacific Corporation) through the x402 payment protocol. It is part of a broader suite of finance and Web3 APIs offered by the same provider, all priced at $0.02 per request and settled in USDC on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-call. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 on Base mainnet using the USDC contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.
Documentation is extremely sparse. The provider's landing page lists many endpoints across data/analytics, AI/ML, finance, and infrastructure categories, but the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further detail. The specific request body schema and response format for the UNP earnings endpoint are not documented, so callers will need to experiment or contact the provider to understand the expected input and output fields.
Capabilities
Use cases
- —Fetching Union Pacific (UNP) earnings data on demand without a subscription
- —Integrating stock earnings lookups into autonomous agent workflows via x402
- —Building financial dashboards that pay per query rather than per month
Fit
Best for
- —Agents or apps needing occasional UNP earnings data without API key management
- —Developers experimenting with x402 pay-per-call finance APIs on Base
- —Low-volume financial data consumers who prefer micropayments over subscriptions
Not for
- —High-frequency trading systems needing sub-millisecond latency and bulk data
- —Users who need comprehensive multi-ticker earnings coverage (only UNP is confirmed at this endpoint)
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/finance/UNP/earnings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of request/response schemas, no OpenAPI spec, and all doc pages return only a wallet-connect prompt. The actual data returned is unknown.
Warnings
- —No request body schema documented — input format must be guessed or discovered experimentally
- —No response schema or example response available
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content
- —The specific data coverage and freshness of UNP earnings data is unverified
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base, maxAmountRequired 20000 base unitshttps://lowpaymentfee.com/api/v1/finance/UNP/earnings
- —Provider lists $0.02 per request pricing with no API keys, no rate limits, and Base network settlementhttps://lowpaymentfee.com
- —USDC contract on Base at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/finance/UNP/earnings
- —Finance & Web3 category includes price feeds, exchange rates, token quotes, and gas estimates endpointshttps://lowpaymentfee.com