Pay-per-call stock data for ticker APD via x402 on Base, settled in USDC.
What it does
This endpoint at lowpaymentfee.com provides stock data for the ticker APD (Air Products & Chemicals) via an x402-gated API call. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an x402 payment header to each request.
The provider, lowpaymentfee.com, hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced at $0.02 per request. The specific endpoint probed here (/api/v1/stocks/APD) is a stock-data endpoint, though the crawled landing page does not list a dedicated "stocks" category — it may be part of the Finance & Web3 grouping or an unlisted route. No OpenAPI schema, detailed documentation, or example responses were found in the crawl; the docs, pricing, and API pages all returned only a "Connect wallet" prompt with no further content.
Because no response schema or sample output is available, the exact fields returned (e.g., price, volume, historical data) are unknown. Agents should expect a JSON payload related to APD stock information, but the structure must be discovered at call time.
Capabilities
Use cases
- —Fetching current or recent stock data for APD (Air Products & Chemicals)
- —Integrating real-time equity information into trading bots or dashboards
- —Agent-driven portfolio monitoring that pays per query with no subscription
Fit
Best for
- —Agents needing on-demand stock data without API key management
- —Low-volume or sporadic stock data lookups where per-call pricing is economical
- —Crypto-native workflows that can settle payments in USDC on Base
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need comprehensive historical stock datasets in batch
- —Anyone unable to settle USDC payments on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/APD \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is live (402 challenge captured) with clear pricing ($0.02 USDC on Base), but there is no OpenAPI schema, no documentation, no example request/response, and the stocks endpoint is not even listed on the provider's landing page. Effectively a stub with minimal verifiable information.
Warnings
- —No OpenAPI or response schema available — output fields are unknown
- —The /api/v1/stocks/ path is not listed on the provider's landing page; it may be undocumented or experimental
- —Docs, pricing, and API pages returned only 'Connect wallet' with no substantive content
- —No example responses or field descriptions found anywhere in the crawl
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base network at maxAmountRequired 20000https://lowpaymentfee.com/api/v1/stocks/APD
- —Provider lists all APIs at $0.02 per request with no API keys, no rate limits, and Base network settlementhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/APD