Get the current stock price for GM via a pay-per-call x402 endpoint on Base.
What it does
This endpoint returns the current stock price for General Motors (GM) through a simple HTTP POST call, paid per request using the x402 protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com that cover data analytics, AI/ML inference, finance, crypto, and utility services.
The endpoint accepts x402 payments settled in USDC on the Base network. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. No API keys, subscriptions, or rate limits are advertised — 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 render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data source for stock prices is unknown.
Capabilities
Use cases
- —Retrieve the current GM stock price for a trading bot or portfolio tracker
- —Agent-driven financial research that needs on-demand equity pricing
- —Embedding live stock data into dashboards without managing API keys
Fit
Best for
- —AI agents that need pay-per-call stock data without subscription management
- —Developers prototyping financial apps who want instant, keyless access
- —Crypto-native workflows already operating on the Base network
Not for
- —Bulk or high-frequency trading data needs (no documented batch or websocket support)
- —Users who need historical price series or OHLCV candle data
- —Anyone requiring detailed documentation or SLA guarantees before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/GM/price \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI spec, no example request or response payloads, no documentation beyond a landing page, and the actual data source for stock prices is undisclosed. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
- —Data source for stock prices is not disclosed; accuracy and freshness are unverifiable
- —The broader lowpaymentfee.com platform lists many diverse endpoints (AI, finance, utils) all at $0.02 — unclear whether all are fully implemented
Citations
- —Endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/GM/price
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/GM/price
- —Pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The site lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com