Historical stock price data for VRTX via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical stock price data for Vertex Pharmaceuticals (VRTX) through the x402 payment protocol. It is part of a broader API platform hosted at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance, crypto, and utility endpoints — all gated behind x402 micropayments settled in USDC on the Base network.
The endpoint accepts POST requests and returns JSON. Each call costs a maximum of $0.02 (20,000 base units of USDC with 6 decimals) paid via the x402 X-PAYMENT header. There are no API keys, no rate limits, and no subscription commitments — you pay per request. The payment is sent to address 0x1A2B…85F3 on Base using the USDC contract at 0x8335…2913.
Documentation beyond the landing page is sparse: the /docs, /pricing, and /README pages all resolve to a wallet-connect stub with no additional technical detail. No OpenAPI schema, request body specification, or example responses are available. The endpoint is confirmed live (returns a proper 402 challenge), but the exact request parameters and response shape for historical stock data must be discovered by the caller.
Capabilities
Use cases
- —Retrieve historical price data for Vertex Pharmaceuticals (VRTX) for backtesting or analysis
- —Integrate stock history into an AI agent workflow that pays per call with no subscription
- —Build financial dashboards that pull on-demand equity data via micropayments
Fit
Best for
- —Agents or apps that need occasional stock history lookups without managing API keys
- —Developers experimenting with x402 micropayment-gated financial data
- —Low-volume consumers who prefer pay-per-request over monthly subscriptions
Not for
- —High-frequency trading systems requiring sub-millisecond latency and bulk data
- —Users who need comprehensive multi-ticker historical datasets in a single call
- —Anyone without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/VRTX/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request parameters, no example responses, and the docs/pricing/README pages are all empty wallet-connect stubs. The listing is effectively a stub with only the x402 challenge and landing page to go on.
Warnings
- —No documentation available — /docs, /pricing, and /README all return only a wallet-connect prompt with no content.
- —Request body schema and response format are completely undocumented; callers must discover parameters by experimentation.
- —The specific data source for VRTX historical stock prices is unknown — data freshness and accuracy cannot be verified.
- —No OpenAPI or machine-readable schema is published.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/VRTX/history
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/VRTX/history
- —Docs, pricing, and README pages resolve to wallet-connect stubs with no additional contenthttps://lowpaymentfee.com/docs