Pay-per-call stock quote API for AAPL via x402 on Base, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides stock data for AAPL (Apple Inc.) behind an x402 paywall. It is part of a broader suite of pay-per-request APIs offered by the same provider, spanning data analytics, AI/ML inference, finance, crypto, and utility services. The specific endpoint `/api/v1/stocks/AAPL` is not listed on the provider's landing page among the advertised APIs, but it responds with a valid x402 402 challenge, confirming it is live.
Payment is settled on the Base network using USDC (contract 0x8335…2913) via the "exact" scheme. The maxAmountRequired is 20,000 base units, which at 6 decimals equals $0.02 per request. No API keys or accounts are needed — callers attach an X-PAYMENT header with a valid x402 payment proof. The endpoint accepts POST requests and returns application/json.
Documentation is extremely thin. The provider's /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no example payloads available. It is unclear what request body (if any) the POST expects, or what fields the stock data response contains. The endpoint appears to be part of a template-style deployment where many endpoints share the same $0.02 pricing and x402 configuration.
Capabilities
Use cases
- —Fetching real-time or recent AAPL stock data without needing an API key or subscription
- —Agent-driven stock lookups where payment is handled programmatically via x402
- —Integrating Apple stock information into crypto-native or Web3 applications
Fit
Best for
- —Developers wanting keyless, pay-per-call access to AAPL stock data
- —AI agents that can settle micropayments on Base via x402
- —Quick one-off stock data lookups without account registration
Not for
- —Bulk historical stock data downloads (no documented batch endpoint)
- —Users who need detailed API documentation or guaranteed SLA
- —Non-AAPL ticker lookups (this endpoint is hardcoded to AAPL)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/AAPL \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the /stocks/AAPL path isn't even listed among the provider's advertised endpoints. Effectively a stub with confirmed liveness.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet'
- —The /api/v1/stocks/AAPL endpoint is not listed among the provider's advertised APIs on the landing page
- —No request body schema or response schema is documented; callers must guess the payload format
- —Provider appears to be a template deployment with many generic endpoints — data quality/source is unknown
Citations
- —The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/stocks/AAPL
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stocks/AAPL
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompthttps://lowpaymentfee.com/docs