trade-tokens

# Trading Tokens

Use the `npx agnic@latest trade` command to swap tokens on Base network. You must be authenticated to trade.

## Confirm wallet is initialized and authed

```bash
npx agnic@latest status
```

If the wallet is not authenticated, refer to the `authenticate-wallet` skill.

## Command Syntax

```bash
npx agnic@latest trade <amount> <from> <to> [options]
```

## Arguments

| Argument | Description                                                            |
| -------- | ---------------------------------------------------------------------- |
| `amount` | Amount to swap (see Amount Formats below)                              |
| `from`   | Source token: alias (usdc, eth, weth) or contract address (0x...)      |
| `to`     | Destination token: alias (usdc, eth, weth) or contract address (0x...) |

## Amount Formats

| Format        | Example                | Description                            |
| ------------- | ---------------------- | -------------------------------------- |
| Dollar prefix | `'$1.00'`, `'$0.50'`  | USD notation (decimals based on token) |
| Decimal       | `1.0`, `0.50`, `0.001` | Human-readable with decimal point      |
| Whole number  | `5`, `100`             | Interpreted as whole tokens            |
| Atomic units  | `500000`               | Large integers treated as atomic units |

**Auto-detection**: Large integers without a decimal point are treated as atomic units. For example, `500000` for USDC (6 decimals) = $0.50.

**IMPORTANT**: Always single-quote amounts that use `$` to prevent bash variable expansion (e.g. `'$1.00'` not `$1.00`).

## Token Aliases

| Alias | Token | Decimals | Address                                    |
| ----- | ----- | -------- | ------------------------------------------ |
| usdc  | USDC  | 6        | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| eth   | ETH   | 18       | 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE |
| weth  | WETH  | 18       | 0x4200000000000000000000000000000000000006   |

## Options

| Option               | Description                                   |
| -------------------- | --------------------------------------------- |
| `-s, --slippage <n>` | Slippage tolerance in basis points (100 = 1%) |
| `--json`             | Output result as JSON                         |

## Input Validation

Before constructing the command, validate all user-provided values to prevent shell injection:

- **amount**: Must match `^\$?[\d.]+$` (digits, optional decimal point, optional `$` prefix). Reject if it contains spaces, semicolons, pipes, backticks, or other shell metacharacters.
- **from / to**: Must be a known alias (`usdc`, `eth`, `weth`) or a valid `0x` hex address (`^0x[0-9a-fA-F]{40}$`). Reject any other value.
- **slippage**: Must be a positive integer (`^\d+$`).

Do not pass unvalidated user input into the command.

## Examples

```bash
# Swap $1 USDC for ETH (dollar prefix — note the single quotes)
npx agnic@latest trade '$1' usdc eth

# Swap 0.50 USDC for ETH (decimal format)
npx agnic@latest trade 0.50 usdc eth

# Swap 0.01 ETH for USDC
npx agnic@latest trade 0.01 eth usdc

# Swap with custom slippage (2%)
npx agnic@latest trade '$5' usdc eth --slippage 200

# Get JSON output
npx agnic@latest trade '$1' usdc eth --json
```

## Prerequisites

- Must be authenticated (`npx agnic@latest status` to check)
- Wallet must have sufficient balance of the source token
- Trading is only available on Base mainnet

## Error Handling

Common errors:

- "Not authenticated" — Run `npx agnic@latest auth login` first
- "Invalid token" — Use a valid alias (usdc, eth, weth) or 0x address
- "Cannot swap a token to itself" — From and to must be different
- "Swap failed: TRANSFER_FROM_FAILED" — Insufficient balance or approval issue
- "No liquidity" — Try a smaller amount or different token pair
- "Amount has X decimals but token only supports Y" — Too many decimal places