> For the complete documentation index, see [llms.txt](https://docs.questflow.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.questflow.ai/financial-harness/four-pillars.md).

# Four Pillars

**Short answer:** Questflow’s financial harness has four pillars. **Skills** are trading strategies and investor judgment systems. **Plugins** are external data and tools. **Models** are the AI reasoning cores. **Execution** is the markets and platforms where the agent can read and trade. Together they turn fund manager judgment into an AI Finance Agent that can explain, monitor, and act inside your rules.

## The map

| Pillar    | What it is                              | What it connects                                                                                          |
| --------- | --------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| Skills    | Methodology — how the agent judges      | Livermore, Buffett, Druckenmiller, VCP, crypto narrative, A-share systems, exclusive trade-labeled skills |
| Plugins   | Data and tools — what the agent can see | Market data, on-chain, news, social, prediction markets, research                                         |
| Models    | Cognition — how the agent thinks        | GPT, Claude, Gemini, open models, finance-specialized models                                              |
| Execution | Venues — where the agent can act        | Hyperliquid, Polymarket, OKX, Lighter, and expanding brokers                                              |

```
AI Finance Agent = Financial harness + Two-sided marketplace
Financial harness  = Models + Skills + Plugins + Execution Accounts
```

A model without skills is a chatbot. Skills without plugins are opinions. Plugins without execution stop at advice. Execution without judgment is a bot. The harness is the four together.

## Why four, not one “AI”

Coding agents split the same way: the LLM, the skills/rules, MCP plugins, and the terminal. Finance needs the same split because data, venues, and judgment are fragmented. The harness is how Questflow closes the loop from “I understand the market” to a scoped order.

Related: What is a financial harness? · What is invest.md?