Pay-per-call stock data for ticker TMO via x402 on Base, settled in USDC.
What it does
This endpoint at lowpaymentfee.com provides stock data for the ticker TMO (Thermo Fisher Scientific) through an x402 payment-gated API. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The caller sends an X-PAYMENT header containing a signed USDC payment, and the endpoint returns JSON stock data.
The broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call endpoints spanning data analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance (price feeds, exchange rates, crypto quotes, gas estimates), and utility services (geocoding, validation, conversion, generation). All endpoints share the same $0.02-per-request pricing model settled on Base via USDC. The specific endpoint probed here (`/api/v1/stocks/TMO`) falls under the finance category but is not explicitly listed on the landing page, suggesting the stocks path may accept arbitrary ticker symbols.
Documentation is extremely thin — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The x402 challenge is live and well-formed, confirming the endpoint is operational, but the lack of documentation makes it difficult to know what fields the response contains or what POST body (if any) is expected.
Capabilities
Use cases
- —Fetching current stock data for TMO (Thermo Fisher Scientific) without an API key or subscription
- —Integrating pay-per-call equity data into autonomous agent workflows that settle payments on Base
- —Building trading bots or dashboards that pay per request in USDC
Fit
Best for
- —Agents or scripts that need occasional stock lookups without subscription overhead
- —Crypto-native applications that can sign USDC payments on Base
- —Developers who want zero-setup, keyless access to stock data
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need comprehensive historical OHLCV data with documented schemas
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/TMO \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-header>"Endpoint
Quality
The x402 challenge is live and well-formed, confirming the endpoint works and costs $0.02 USDC on Base. However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs pages are empty. The specific /stocks/TMO path isn't even listed on the landing page. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all render only a wallet-connect prompt
- —No OpenAPI or schema definition for request or response payloads
- —The /api/v1/stocks/TMO path is not listed on the provider's landing page; it may be undocumented or dynamically routed
- —Response format and fields are completely unknown — no example responses available
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/stocks/TMO
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/stocks/TMO
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Basehttps://lowpaymentfee.com
- —The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Basehttps://lowpaymentfee.com/api/v1/stocks/TMO
- —Documentation pages (/docs, /pricing, /api, /README) render only a Connect wallet prompthttps://lowpaymentfee.com/docs