Pay-per-call stock quote API for ticker WM, settled in USDC on Base via x402.
What it does
This endpoint at lowpaymentfee.com provides stock data for the ticker WM (Walmart Inc.) via a simple POST request, paid per call using the x402 protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The payment is settled on-chain to a specified wallet address.
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 at a uniform $0.02 per request. The specific `/api/v1/stocks/WM` path serves stock information for the WM ticker symbol, though the exact response schema (fields like price, volume, market cap, etc.) is not documented in the available material.
The x402 challenge is live and returns a well-formed 402 response with USDC (contract 0x8335…) on Base as the accepted payment asset. The maxAmountRequired of 20000 base units equals $0.02 given USDC's 6 decimals. No OpenAPI spec, detailed docs, or example responses were found during crawling — the docs, pricing, and API pages all resolve to a minimal "Connect wallet" prompt.
Capabilities
Use cases
- —Fetching current stock data for Walmart (WM) in an automated trading or analytics pipeline
- —Agents that need on-demand equity quotes without managing API key subscriptions
- —Integrating stock lookups into crypto-native applications that can settle micropayments on Base
Fit
Best for
- —Developers wanting zero-signup, pay-as-you-go stock data access
- —AI agents with USDC on Base that need single-ticker stock lookups
- —Prototyping financial dashboards without committing to a data vendor
Not for
- —Bulk historical stock data downloads or backtesting (single-ticker, per-call model)
- —Users who need free or fiat-only payment options
- —Production systems requiring documented SLAs and detailed response schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/WM \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented response format, no example responses, and the docs/pricing/API pages are all empty beyond a wallet-connect prompt. The actual data returned by this endpoint is entirely unknown.
Warnings
- —No OpenAPI or response schema available — the exact fields returned are unknown
- —Documentation pages (/docs, /pricing, /api, /README) all resolve to a minimal 'Connect wallet' page with no useful content
- —The stock data source and freshness/latency guarantees are undocumented
- —Cannot verify what stock data fields (price, volume, OHLC, etc.) are included in the response
Citations
- —The endpoint returns a 402 challenge requesting 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Basehttps://lowpaymentfee.com/api/v1/stocks/WM
- —All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com