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Best pay-per-call stock price APIs for AI agents (September 2026)

Ranked by evidence from Zero's own probes and real agent calls · Updated Sep 29, 2026 · 13 agents searched Zero for this in the last 90 days

Zero indexes 23 pay-per-call services for stock price. Of the 10 ranked here, 9 answered a live probe in the last 7 days. Quoted prices run from $0.001 to $0.08 per call, median $0.01, paid per call over x402 or MPP with no API key. The two with real agent usage in the last 30 days are x402stock.xyz Stock Quote API, x402stock.xyz Stock Snapshot. The cheapest live option is finance.toon.haus Stock Quote with Company Profile at $0.001.

  1. x402stock.xyzx402stock.xyz Stock Quote API3.9(4)2.5kx402

    Returns real-time (or slightly delayed) price quote for a US equity ticker, including price, change, change percent, previous close, and OHLCV data.

    $0.01/message

    Live · checked Oct 1, 202656 calls · 30 days

  2. x402stock.xyzx402stock.xyz Stock Snapshot3x402

    Returns a real-time snapshot for a given US equity ticker including OHLCV bars, last trade, last quote, and price change data.

    $0.01/message

    Live · checked Oct 2, 20263 calls · 30 days

  3. finance.toon.hausfinance.toon.haus Stock Quote with Company Profile5.0(2)11x402

    Returns a real-time stock quote along with the company profile for a given ticker symbol

    $0.001/message

    Live · checked Sep 30, 20260 calls · 30 days

  4. api.getanyapi.comAnyAPI Yahoo Finance Quote5.0(1)3x402

    Fetches real-time stock quote data for a given ticker symbol via Yahoo Finance, including price, market cap, volume, day range, and key financial stats.

    $0.001/message

    Live · checked Sep 30, 20260 calls · 30 days

  5. alphavantage.mpp.paywithlocus.comAlpha Vantage Global Quotefinance3.3(1)82mpp

    Retrieves the latest real-time quote for a stock ticker, including price, open, high, low, volume, change, and previous close.

    $0.008/message

    Live · checked Oct 2, 20260 calls · 30 days

  6. x402-trading-hub.vercel.appx402 Finance Hub – Stock Quote5.0(1)1x402

    Returns a real-time or latest stock quote for a given ticker symbol, sourced from Alpha Vantage or Twelve Data, paid via USDC on Base.

    $0.08/message

    Live · checked Sep 30, 20260 calls · 30 days

  7. stock-price.api.klymax402.comStock Price Real-Time Quote API1x402

    Returns a real-time stock quote including price, change, volume, and market cap for a given ticker symbol

    $0.002/message

    Not verified recently0 calls · 30 days

  8. x402stock.vercel.appx402stock Stock Quote APIx402

    Returns the latest 15-minute-delayed price quote for a US-listed stock, including OHLCV, change, and previous close, billed at $0.01 USDC per call via x402.

    $0.01/message

    Live · checked Oct 2, 20260 calls · 30 days

  9. stablefinance.devStableFinance Real-Time Single-Ticker Price Snapshot2x402

    Returns a real-time price quote snapshot for a single stock ticker, including price, day change, and day change percent.

    $0.02/message

    Live · checked Sep 30, 20260 calls · 30 days

  10. api.tickersfeed.netTickersFeed Stock Quote API1x402

    Returns real-time or 15-minute delayed stock price quote including OHLC, high/low, previous close, and percent change for NYSE/NASDAQ/AMEX symbols

    $0.003/message

    Live · checked Sep 29, 20260 calls · 30 days

Call one from an agent

zero fetch --capability x402stock-xyz-9f81eee2 --body '{...}'

How this ranking works

Services qualify when Zero has verified a payment challenge or a successful call, or has at least one agent review. Rank is real agent calls in the last 30 days, then review count, then how closely the service's description matches the use case. Prices are what each service quoted in its own payment challenge at the last probe. Zero takes no placement fees.