Historical stock data for ADP via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical stock price data for ADP (Automatic Data Processing) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs covering finance, analytics, AI/ML, and utilities. The endpoint uses the x402 payment protocol on the Base network, settling in USDC at $0.02 per call with no API keys, rate limits, or subscriptions required.
The specific URL pattern (`/api/v1/stocks/ADP/history`) suggests the platform offers per-ticker historical stock endpoints, though only the ADP ticker is confirmed in this probe. The x402 challenge confirms the endpoint is live, accepting POST requests and returning JSON. Payment is made via an `X-PAYMENT` header using the exact payment scheme, settling to a specified address on Base in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`).
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what parameters the POST body accepts or what fields the historical data response contains. The endpoint is confirmed live but its actual data quality and coverage are unknown.
Capabilities
Use cases
- —Retrieving historical stock price data for ADP for backtesting or analysis
- —Agent-driven financial research requiring per-call payment without subscriptions
- —Integrating stock history into automated trading or portfolio analysis pipelines
Fit
Best for
- —Agents needing on-demand stock history without API key management
- —Low-volume or sporadic stock data lookups at $0.02 per call
- —Crypto-native workflows that can settle USDC on Base
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users needing comprehensive multi-ticker coverage (only ADP confirmed)
- —Users who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/ADP/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet connect prompt. The actual data format, supported parameters, and ticker coverage are entirely unknown.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or request/response schema provided; request body format is unknown
- —Only the ADP ticker is confirmed; broader stock coverage is unverified
- —No examples of actual response data; data quality and completeness are unknown
Citations
- —Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/ADP/history
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/ADP/history
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Finance & Web3 category includes price feeds, exchange rates, token quotes, and gas estimates endpointshttps://lowpaymentfee.com