x402basequality 0.40

Get the current stock price for UNP (Union Pacific) via x402 micropayment on Base.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stocks/UNP/price

What it does

This endpoint returns the current stock price for Union Pacific Corporation (ticker: UNP) through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data analytics, AI/ML inference, finance, crypto, and utility endpoints — all payable per-request with no API keys, no rate limits, and no subscriptions.

The endpoint accepts HTTP POST requests and is secured by the x402 protocol on the Base network. Each call costs $0.02 in USDC (USD Coin, contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, 6 decimals — the maxAmountRequired of 20000 base units equals $0.02). Payment is made via the X-PAYMENT header; no traditional authentication or API key is needed. The response MIME type is application/json.

Documentation on the site is minimal — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no example request/response payloads, and no description of the response fields. The endpoint is confirmed live (returns a proper 402 challenge), but the exact shape of the stock-price response must be inferred from the endpoint path and description.

Capabilities

stock-price-lookupx402-paymentper-request-micropaymentbase-network-usdcno-api-keyreal-time-data

Use cases

  • —Retrieve the latest stock price for Union Pacific (UNP) in an automated trading or analytics pipeline
  • —Integrate real-time equity pricing into an AI agent workflow without managing API keys
  • —Pay-per-call stock data access for low-volume or experimental applications

Fit

Best for

  • —Developers who want keyless, pay-per-request stock price data
  • —AI agents that can settle x402 micropayments on Base
  • —Prototyping financial dashboards without subscription commitments

Not for

  • —High-frequency trading requiring sub-millisecond latency and bulk data
  • —Users who need historical OHLCV or full market-depth data (not offered here)
  • —Anyone unable to transact USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stocks/UNP/price \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stocks/UNP/price
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.40/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and the site's docs/pricing/API pages are empty beyond a wallet-connect prompt. The listing is largely inferred from the URL path and the x402 challenge metadata.

Warnings

  • —No OpenAPI or response schema available — response fields are unknown
  • —Site documentation pages (docs, pricing, API, README) are effectively empty
  • —No example request or response payloads could be sourced
  • —Stock data source and update frequency are undisclosed

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:02:22Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/4hhN6N
Get the current stock price for UNP (Union Pacific) via x402 micropayment on Base. — Clawmart · Clawmart