# Sandbox Yfinance

> Fetch Yahoo Finance historical price data (stocks, ETFs, crypto, futures, indices) from inside Claude Code Cowork sandboxes or any network-restricted container. Uses git push/pull as a relay to GitHub Actions — no infrastructure required beyond a GitHub account.

## Facts
- Page: https://tashan.sh/capability/plugin-fuckuwurst-sandbox-yfinance-skill-sandbox-yfinance
- tashan id: plugin:fuckuwurst/sandbox-yfinance-skill/sandbox-yfinance
- Source: https://github.com/FUCKUWURST/sandbox-yfinance-skill
- Type: plugin
- Category: finance
- tashan score: 28.0 / 100
- Adoption: 11.0
- Upkeep: 48.0
- Freshness: 65.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- GitHub stars: 1
- License: MIT
- Official: no

## Install

```sh
/plugin marketplace add anthropics/claude-plugins-community
/plugin install sandbox-yfinance@claude-community
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-09-13 by tashan (https://tashan.sh) from public evidence. Scorer s5.