Pay-per-call stock quote for GM via x402 on Base, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides a stock data API for General Motors (ticker: GM). It uses the x402 payment protocol, requiring a per-request micropayment of $0.02 in USDC on the Base network. No API keys, rate limits, or subscriptions are needed — callers simply attach an X-PAYMENT header with a valid x402 payment proof to receive the response.
The endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/crypto market data, and utility services, all priced at $0.02 per request. The specific /api/v1/stocks/GM route returns JSON and is accessed via HTTP POST. The x402 challenge confirms the endpoint is live, accepting payments to address 0x1A2B…85F3 using USDC (contract 0x8335…2913) on Base.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint likely returns stock price or quote data for GM, but the exact fields are unknown. Callers should expect a JSON response but will need to discover the schema empirically.
Capabilities
Use cases
- —Fetching real-time or recent stock data for General Motors (GM) without an API key or subscription
- —Integrating stock quotes into an AI agent workflow that can settle micropayments on Base
- —Building trading bots or dashboards that pay per request for stock data
Fit
Best for
- —Agents or apps that need occasional GM stock data without subscription overhead
- —Developers experimenting with x402 pay-per-call APIs
- —Crypto-native applications that can settle USDC on Base
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need comprehensive multi-ticker stock screening in a single call
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/GM \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs pages are empty. The actual data returned is unknown, making this effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — response format must be discovered empirically
- —Docs, pricing, and API pages all render only 'Connect wallet' with no technical content
- —The /api/v1/stocks/GM path is not listed on the provider's homepage; it may be an undocumented or experimental endpoint
- —Exact data freshness (real-time vs delayed) is unknown
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Basehttps://lowpaymentfee.com/api/v1/stocks/GM
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/stocks/GM
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stocks/GM