> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yellow.pro/llms.txt
> Use this file to discover all available pages before exploring further.

# Choose your setup

> Three setups in increasing order of access and risk — market data only, full account access, then trading.

Three environment variables and two flags is a lot to absorb at once. You don't need all of them. Pick the level you actually want and verify it works before adding the next one.

## Level 1 — Market data only

No credentials at all. Proves the install and the client wiring with nothing at risk.

```bash theme={null}
YELLOW_PRO_MODULES=market
```

You get prices, order books, klines, funding rates, and the supported networks and assets. Every tool in the [market module](/mcp/tools#market) works with no key.

<Tip>
  Start here even if you ultimately want trading. If market data works, the server is installed and your client is spawning it correctly — which eliminates most of the [troubleshooting](/mcp/troubleshooting) surface before credentials are involved.
</Tip>

## Level 2 — Full account access, still read-only

Add the three credentials. You can now read balances, orders, positions, fills, fee tiers, and history. No order can be placed, because trading tools are not registered.

```bash theme={null}
YELLOW_PRO_API_KEY=...
YELLOW_PRO_API_SECRET=...
YELLOW_PRO_APP_SESSION_ID=...
YELLOW_PRO_MODULES=market,account
```

See [Getting your credentials](/mcp/credentials) for how to obtain these, and the [scope table](/mcp/credentials#scopes-and-tools) for which API-key permissions each group of tools needs.

## Level 3 — Trading

Add the opt-in flag. Order placement, cancellation, position closing, leverage changes, and internal transfers become available.

```bash theme={null}
YELLOW_PRO_ENABLE_TRADING=true
```

<Warning>
  Read [Risk and safety](/mcp/risk-and-safety) before this step. Two tools — `cancel_all_orders` and `close_positions` — act on your **entire** account when called without a market, and they are single-word requests for an agent.
</Warning>

## Which module does what

| Module    | Credentials                                     | Contains                                        |
| --------- | ----------------------------------------------- | ----------------------------------------------- |
| `market`  | Not required                                    | Public market data                              |
| `account` | Required (except `get_fee_schedule`)            | Balances, orders, positions, history, fee tiers |
| `trading` | Required, plus `YELLOW_PRO_ENABLE_TRADING=true` | Orders, position closing, leverage, transfers   |

Omitting `YELLOW_PRO_MODULES` loads all modules. Full details in [Configuration](/mcp/configuration).