# Yaktool

> 70 precision validation tools for product data and business documents.
> Every check is numbered, severity-graded and backed by an official source
> (GS1, Google, Shopify, EU/Peppol). Everything runs in the browser — no
> accounts, no uploads.

## For AI agents

The same rule engine is available as a local MCP server (stdio, zero network):

- Install: `npx -y yaktool-mcp` — https://www.npmjs.com/package/yaktool-mcp
- Docs: https://yaktool.com/mcp/
- Claude Code: `claude mcp add yaktool -- npx -y yaktool-mcp`

## Key pages

- All tools: https://yaktool.com/tools/
- E-commerce product data: https://yaktool.com/ecommerce/
- Business documents: https://yaktool.com/documents/
- MCP server: https://yaktool.com/mcp/