Pay-per-call stock quote for NOC (Northrop Grumman) via x402 on Base, settled in USDC.
What it does
This endpoint provides stock data for the ticker NOC (Northrop Grumman) through a simple POST request, paid per call using the x402 protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com that span data analytics, AI/ML inference, finance, crypto, and utility services — all sharing the same pay-per-request pricing model.
The endpoint accepts x402 payments on the Base network using USDC (contract 0x8335…2913). The maximum amount required per request is 20,000 base units of USDC, which at 6 decimals equals $0.02 USD. There are no API keys, no rate limits, and no subscription commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof. The response MIME type is application/json.
Documentation beyond the landing page is extremely thin: the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no sample request/response, and no description of the JSON fields returned for a stock quote. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation means callers must discover the response shape empirically.
Capabilities
Use cases
- —Fetching current or recent stock data for Northrop Grumman (NOC) in an automated trading or research pipeline
- —Integrating low-friction, keyless stock data access into an AI agent workflow
- —Paying per request for occasional stock lookups without maintaining a subscription
Fit
Best for
- —Agents or bots that need on-demand stock data without API key management
- —Low-volume, pay-as-you-go stock data consumers
- —Developers experimenting with x402 payment-gated APIs
Not for
- —High-frequency trading requiring sub-millisecond latency and guaranteed SLAs
- —Users who need comprehensive historical OHLCV data or full market coverage (only NOC ticker at this path)
- —Anyone without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/NOC \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>"Endpoint
Quality
The endpoint is live and returns a well-formed x402 challenge with clear pricing, but there is no OpenAPI schema, no documented request/response format, and all documentation pages are empty stubs. The actual stock data payload is completely unknown.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no content.
- —No OpenAPI or JSON schema describing the request body or response fields for the stock quote.
- —Response structure must be discovered empirically; there is no guarantee of what fields are returned.
- —The broader lowpaymentfee.com platform lists many endpoints but provides no detailed docs for any of them.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/stocks/NOC
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.https://lowpaymentfee.com/api/v1/stocks/NOC
- —The site advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —Documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompt.https://lowpaymentfee.com/docs