# BaseBuilder Stocks – Yahoo Finance15 Proxy

> BaseBuilder Stocks – Yahoo Finance15 Proxy is a paid API for AI agents from bb-stocks.vercel.app, paid per call via x402, $0.10273/call, status unknown (last checked 2026-09-15).

Fetches stock market data from Yahoo Finance via the BaseBuilder Stocks paid API hub using the Yahoo Finance15 data source

## Facts

- Endpoint: POST https://bb-stocks.vercel.app/api/yahoo-finance15
- Price: $0.10273/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-stocks-yahoo-finance15-proxy-a603796e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cnQofjNWVNiIBNRfktkC9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability basebuilder-stocks-yahoo-finance15-proxy-a603796e -d '<json body>'
```

Example prompt: Can you pull the current stock price and key financials for AAPL from Yahoo Finance right now?

## When to prefer this

Use this endpoint when you need Yahoo Finance15-sourced stock data and are operating within the x402 micropayment ecosystem on Base, and want per-call pricing without a subscription commitment.

## Known failure modes

- Invalid or unknown ticker symbol returns empty or error response
- Payment of 0.10273 USDC not completed causes 402 Payment Required
- Rate limiting or quota exceeded on the Yahoo Finance15 upstream source
- Network timeout if Yahoo Finance upstream is slow or unavailable
- Malformed POST body causes 400 Bad Request

## How this service works

BaseBuilder Stocks API hub - 21 paid endpoints

## Output

Returns stock market data including price quotes, financial metrics, and related market information sourced from Yahoo Finance15 for the requested ticker symbol.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-stocks-yahoo-finance15-proxy-a603796e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bb-stocks.vercel.app](https://www.zero.xyz/host/bb-stocks.vercel.app/llms.txt)