Swap Tokens

核心功能：通过去中心化交易所（DEX）在以太坊、Polygon等多条支持链上实现代币互换，支持滑点控制等参数配置。典型场景：用户需买入、卖出、转换代币（如USDC换ETH）时使用。输入为指定链、出入代币、金额等参数的bash命令，执行前需验证钱包认证状态及源代币余额，输出为链上完成的兑换交易，遇问题可参考对应技能解决。

rachidjarray-hk-qa-fdt

热度 54.43

最近更新 2026-05-11 17:29:44

分类：自动化依赖：代码执行 / 第三方 API应用场景：个人理财 / 财务

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add swap-tokens

Metadata

name: swap-tokens
description: Swap or trade tokens via decentralized exchanges on any supported chain. Use when you or the user want to trade, swap, exchange, buy, sell, or convert between tokens like USDC, ETH, WETH, SOL, or any other token. Covers phrases like "buy ETH with USDC", "sell ETH for USDC", "convert USDC to ETH", "swap tokens", "get some ETH".
user-invocable: true
disable-model-invocation: false
allowed-tools: ["Bash(fdx status*)","Bash(fdx call swapTokens*)","Bash(fdx call getWalletOverview*)"]

Swapping Tokens

Use the fdx call swapTokens command to swap between tokens via decentralized exchanges on any supported chain. Unlike centralized exchange swaps, these execute directly on-chain through DEX protocols.

Confirm wallet is authenticated

fdx status

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

Check Balance Before Swapping

Verify the wallet holds enough of the source token:

fdx call getWalletOverview --chainKey <chain>

Executing a Swap

fdx call swapTokens \
  --chainKey <chain> \
  --tokenIn <token> \
  --tokenOut <token> \
  --amount <amount>

Parameters

Parameter	Required	Description
`--chainKey`	Yes	Blockchain to swap on (e.g. `ethereum`, `polygon`, `base`, `solana`)
`--tokenIn`	Yes	Source token — symbol (e.g. `USDC`, `ETH`) or contract address
`--tokenOut`	Yes	Destination token — symbol or contract address
`--amount`	Yes	Amount of `tokenIn` to swap (human-readable)
`--mode`	No	Swap mode (e.g. exact input, exact output)
`--objective`	No	Optimization objective (e.g. best price, lowest gas)
`--maxSlippageBps`	No	Maximum slippage tolerance in basis points (100 = 1%)
`--deadlineSeconds`	No	Transaction deadline in seconds

Examples

Basic swaps

# Swap 100 USDC for ETH on Ethereum
fdx call swapTokens \
  --chainKey ethereum \
  --tokenIn USDC \
  --tokenOut ETH \
  --amount 100

# Swap 0.05 ETH for USDC on Base
fdx call swapTokens \
  --chainKey base \
  --tokenIn ETH \
  --tokenOut USDC \
  --amount 0.05

# Swap SOL for USDC on Solana
fdx call swapTokens \
  --chainKey solana \
  --tokenIn SOL \
  --tokenOut USDC \
  --amount 2

Swap with slippage control

# Swap with 0.5% max slippage
fdx call swapTokens \
  --chainKey ethereum \
  --tokenIn USDC \
  --tokenOut ETH \
  --amount 500 \
  --maxSlippageBps 50

Swap using contract addresses

# Swap using explicit token contract addresses
fdx call swapTokens \
  --chainKey ethereum \
  --tokenIn 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 \
  --tokenOut 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 \
  --amount 100

Flow

Check authentication with fdx status
Check balance with fdx call getWalletOverview --chainKey <chain>
Confirm the swap details with the human (amount, tokens, chain, slippage)
Execute with fdx call swapTokens
Optionally check updated balance with fdx call getWalletOverview

Important: DEX swaps are subject to slippage — the final output amount may differ slightly from the quoted amount. For large swaps, consider setting --maxSlippageBps explicitly.

Prerequisites

Must be authenticated (fdx status to check, see authenticate skill)
Wallet must hold sufficient balance of the source token on the target chain
If the wallet has insufficient funds, suggest using the fund-wallet skill

Error Handling

"Not authenticated" — Run fdx setup first, or see authenticate skill
"Insufficient balance" — Check balance with getWalletOverview; see fund-wallet skill
"Cannot swap a token to itself" — tokenIn and tokenOut must be different
"No liquidity" — Try a smaller amount or a different token pair
"Swap failed" — May be a slippage issue; try with a higher --maxSlippageBps