Historical stock price data for LIN (Linde) via pay-per-request x402 on Base.
What it does
This endpoint provides historical stock price data for the ticker LIN (Linde plc) through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform offering a broad suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the same pricing model: $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.
The specific endpoint at `/api/v1/stocks/LIN/history` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a maximum payment of 20,000 base units of USDC (0.02 USD) on Base (asset contract 0x8335…2913). Payment is made via the x402 "exact" scheme to the provider's wallet. The platform also hosts similar stock endpoints (implied by the URL pattern) and a wide range of other financial, AI, and utility APIs.
Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The actual response format for historical stock data must be inferred or discovered by making a paid request.
Capabilities
Use cases
- —Retrieving historical price data for Linde plc (LIN) for backtesting or analysis
- —Integrating stock history into an AI agent's financial research workflow
- —Building dashboards or reports that require on-demand historical equity data
Fit
Best for
- —Agents or apps needing ad-hoc stock history without subscription commitments
- —Developers who want keyless, pay-per-use access to financial data
- —Crypto-native workflows that can settle micropayments in USDC on Base
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users who need comprehensive multi-ticker coverage with documented schemas
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/LIN/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The docs pages are empty. The actual data returned is unknown, making this effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
- —No request or response schema is published; the data format must be discovered empirically.
- —No OpenAPI or machine-readable spec found.
- —Stock data endpoints are not listed on the provider's landing page (only analytics, AI, finance/crypto, and utility APIs are shown), so this specific endpoint's status and coverage are uncertain.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/stocks/LIN/history
- —The platform advertises $0.02 per request 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/LIN/history
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive documentationhttps://lowpaymentfee.com/docs