# ai-theories > Open-source projects published at ai-theories.github.io. ## Projects - [Wealth Skills](https://ai-theories.github.io/wealth-skills/llms.txt): wealth skills and investing skills for Claude, Claude Code, Codex and Cursor. Claude skills (SKILL.md packs) for wealth management, zero-dependency calculation engines, a CLI and MCP servers for tax, portfolios, compliance and fund operations. - [Wealth Skills full documentation](https://ai-theories.github.io/wealth-skills/llms-full.txt): the README and every skill pack in one file. - [Wealth Skills source code](https://github.com/ai-theories/wealth-skills) - [Tax Skills](https://ai-theories.github.io/tax-skills/llms.txt): Claude skills for US investment tax analysis. Lot-level gain and loss, wash-sale screening across accounts and UMA sleeves, loss harvesting and rebalancing under a gain budget, municipal bond pricing, and federal estimates, computed by a deterministic Python engine behind nine MCP servers with versioned rule packs. - [Tax Skills full documentation](https://ai-theories.github.io/tax-skills/llms-full.txt): the README and every skill in one file. - [Tax Skills tested cases](https://ai-theories.github.io/tax-skills/cases.html): all 301 scripted cases, grouped by client objective. - [Tax Skills source code](https://github.com/ai-theories/tax-skills)