APD earnings data via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides APD (likely Air Products & Chemicals, ticker APD) earnings data 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 via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment of up to 20,000 base units ($0.02, since USDC uses 6 decimals) on Base. There are no API keys, no rate limits, and no subscription commitments — each call is independently paid for on-chain.
Documentation is extremely sparse. The provider's docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the earnings response contains. The endpoint is live (returns a valid 402 challenge), but the lack of documentation makes it difficult to know what request body to send or what response structure to expect.
Capabilities
Use cases
- —Retrieving APD earnings data for financial analysis
- —Automated agent-driven stock earnings lookups
- —Integrating earnings data into trading or research pipelines
Fit
Best for
- —Agents needing on-demand earnings data without API key management
- —Developers who want pay-per-call finance data settled on Base
- —Quick one-off earnings lookups without subscription overhead
Not for
- —Bulk historical earnings data retrieval (no documented batch support)
- —Users who need detailed API documentation or guaranteed SLAs
- —Non-crypto-native users unfamiliar with x402 payment flows
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/finance/APD/earnings \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it exists and accepts payments. However, there is zero documentation on request format, response schema, or what 'APD/earnings' actually returns. No OpenAPI spec, no examples, and all doc pages are blank beyond a wallet connect prompt. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and API pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request or response bodies
- —The meaning of 'APD' in the path is inferred (likely the stock ticker) but not confirmed by the provider
- —No request body format documented; callers must guess what to POST
- —No response examples available anywhere in crawled content
Citations
- —Endpoint returns a valid x402 402 challenge with USDC on Base networkhttps://lowpaymentfee.com/api/v1/finance/APD/earnings
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/finance/APD/earnings
- —Provider advertises $0.02/request, no API keys, no rate limits, Base networkhttps://lowpaymentfee.com
- —Docs, pricing, and API pages render only 'Connect wallet' with no technical contenthttps://lowpaymentfee.com/docs