Pay-per-call stock quote API for SBUX via x402 on Base, settled in USDC.
What it does
This endpoint at lowpaymentfee.com provides stock data for Starbucks (SBUX) via a simple POST request, gated by the x402 payment protocol. Each call 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 using the "exact" scheme.
The provider operates a broader platform offering dozens of pay-per-call endpoints spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance (price feeds, exchange rates, crypto quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request and use the same x402 payment flow on Base with USDC.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema for the stocks endpoint. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data source and response format are unknown.
Capabilities
Use cases
- —Fetching current Starbucks (SBUX) stock data programmatically without API key registration
- —Integrating stock quotes into an AI agent workflow that can settle payments on Base
- —Building trading bots or dashboards that pay per request with USDC
Fit
Best for
- —Developers who want frictionless, keyless access to stock data
- —AI agents with x402-compatible wallets on Base
- —Low-volume or sporadic stock data lookups where per-call pricing is preferable to subscriptions
Not for
- —High-frequency trading requiring sub-millisecond latency and guaranteed SLAs
- —Users who need comprehensive historical stock data or bulk downloads
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/SBUX \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it exists and accepts payment. However, there is no documentation, no OpenAPI spec, no example requests or responses, and no description of what data the stocks endpoint actually returns. The crawled docs/pricing/API pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content
- —No OpenAPI or schema describing the response format for the /api/v1/stocks/SBUX endpoint
- —Response data source and freshness are unknown — unclear whether this returns real-time or delayed stock quotes
- —The provider lists many endpoint categories but specifics on data quality, uptime, or SLAs are absent
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units USDC on Basehttps://lowpaymentfee.com/api/v1/stocks/SBUX
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/SBUX