Historical stock price data for TMO (Thermo Fisher Scientific) via x402 micropayment on Base.
What it does
This endpoint at lowpaymentfee.com provides historical stock price data for the ticker TMO (Thermo Fisher Scientific). It is part of a broader suite of pay-per-request APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 protocol for payment, settling in USDC on the Base network.
The specific endpoint `/api/v1/stocks/TMO/history` accepts POST requests and returns JSON. The x402 challenge confirms it is live, requiring a maximum of 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals). No API keys are needed; payment is handled inline via the X-PAYMENT header. The provider advertises no rate limits and instant access.
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 schema, no request/response examples, and no detailed documentation for the stocks history endpoint specifically. The URL pattern suggests the API may support other tickers beyond TMO, but this is not confirmed. The output schema and request body format are unknown beyond the fact that it accepts HTTP POST and returns application/json.
Capabilities
Use cases
- —Retrieving historical stock price data for TMO (Thermo Fisher Scientific)
- —Building financial dashboards or analytics tools that need on-demand equity history
- —Agent-driven portfolio analysis where per-call payment avoids subscription overhead
- —Backtesting trading strategies using historical price data
Fit
Best for
- —Agents or apps needing occasional stock history lookups without API key management
- —Developers who want pay-per-use pricing with no subscription commitment
- —x402-compatible clients settling micropayments in USDC on Base
Not for
- —High-frequency or bulk historical data retrieval (no documented batch endpoint)
- —Users who need comprehensive documentation or guaranteed SLAs
- —Accessing real-time streaming stock data (this endpoint is for historical data)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/TMO/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02/request in 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 specific stocks/history endpoint is not even listed on the provider's landing page, making its capabilities largely unknown.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema for request/response bodies
- —The /api/v1/stocks/TMO/history endpoint is not listed on the provider's homepage; only analytics, AI, finance, crypto, and utility endpoints are shown
- —Request body format is completely unknown — no examples or field descriptions available
- —It is unclear whether other stock tickers are supported beyond TMO
Citations
- —The endpoint returns a 402 x402 challenge requiring 20,000 base units of USDC (0.02 USD) on Base networkhttps://lowpaymentfee.com/api/v1/stocks/TMO/history
- —The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/stocks/TMO/history
- —Documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs