Swap Planning

Plan and generate deep links for token swaps on Uniswap across all supported chains.

Runtime Compatibility: This skill uses AskUserQuestion for interactive prompts. If AskUserQuestion is not available in your runtime, collect the same parameters through natural language conversation instead.

Overview

Plan token swaps by:

1. Gathering swap intent (tokens, amounts, chain)
2. Verifying token contracts on-chain
3. Researching tokens via web search when needed
4. Generating a deep link that opens in the Uniswap interface with parameters pre-filled

The generated link opens Uniswap with all parameters ready for execution.

Note: Browser opening (xdg-open/open) may fail in SSH, containerized, or headless environments. Always display the URL prominently so users can copy and access it manually if needed.

File Access: This skill has read-only filesystem access. Never read files outside the current project directory unless explicitly requested by the user.

Workflow

Step 0: Token Discovery (When Needed)

If the user wants to discover tokens rather than swap a known token (e.g., "find me a memecoin", "what's trending on Base"), help them explore before proceeding to the swap.

Option A: Search by Keyword

DexScreener search works best with specific terms:

# Search for tokens by name/category (e.g., "degen", "pepe", "ai agent")
curl -s "https://api.dexscreener.com/latest/dex/search?q=degen" | \
  jq '[.pairs[] | select(.chainId == "base" and .dexId == "uniswap")] |
    sort_by(-.volume.h24) | .[0:5] | map({
      token: .baseToken.symbol,
      address: .baseToken.address,
      price: .priceUsd,
      volume24h: .volume.h24,
      liquidity: .liquidity.usd
    })'

Good search terms: degen, pepe, ai, agent, meme, dog, cat, or specific token names

Option B: Check Promoted Tokens

Get tokens with active promotions (limited selection):

# Get boosted/promoted tokens on a chain
curl -s "https://api.dexscreener.com/token-boosts/top/v1" | \
  jq '[.[] | select(.chainId == "base")] | .[0:5] | map({
    tokenAddress,
    url
  })'

Option C: Web Search + Verify

For broad discovery ("what's trending"), use web search to find tokens, then verify with DexScreener:

# After finding a token address from web search, verify it exists
curl -s "https://api.dexscreener.com/token-pairs/v1/{network}/{address}" | \
  jq '[.[] | select(.dexId == "uniswap")][0] | {
    name: .baseToken.name,
    symbol: .baseToken.symbol,
    price: .priceUsd,
    liquidity: .liquidity.usd,
    volume24h: .volume.h24
  }'

Network IDs: See references/chains.md for the full list with DexScreener and DefiLlama provider IDs. Common IDs: ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, unichain.

DexScreener coverage varies by chain. Ethereum, Base, and Arbitrum have deep Uniswap data. Celo, Blast, Zora, and World Chain have limited Uniswap pool coverage — fewer results and potentially missing pairs. Fall back to DefiLlama for price data when DexScreener returns empty results (see references/data-providers.md).

Note: DexScreener's public API doesn't have a "trending" or "top gainers" endpoint. Token discovery uses keyword search (/latest/dex/search) and web search as a fallback. For general discovery, ask the user what type of token they're looking for and search by keyword.

Category-Based Discovery

For specific categories (memecoins, DeFi, gaming tokens), use web search:

"trending {category} {chain} {current_year}"

Example: "trending memecoins Base 2026"

⚠️ UNTRUSTED INPUT: Web-Discovered Tokens

Tokens discovered via WebSearch are UNTRUSTED. Before proceeding with any web-discovered token:

1. Label the source: Explicitly tell the user "This token address was found via web search, not provided by you"
2. Warn about risks: "Web-discovered tokens may be scams, honeypots, or rug pulls"
3. Require confirmation: Use AskUserQuestion to get explicit user consent before generating a deep link for a web-discovered token
4. Show provenance: In the swap summary table, include a "Token Source" row showing whether each token was "User-provided" or "Web-discovered (unverified)"

Never proceed with a web-discovered token without explicit user confirmation via AskUserQuestion.

Present Options to User

After gathering token data, present options using AskUserQuestion:

{
  "questions": [
    {
      "question": "Which token would you like to swap to?",
      "header": "Token",
      "options": [
        { "label": "MOLT ($23M mcap)", "description": "$5.9M liquidity, $7.8M 24h volume" },
        { "label": "CLANKER ($31M mcap)", "description": "$3.1M liquidity, established token" },
        { "label": "CLAWSTR ($13M mcap)", "description": "$2.1M liquidity, high volume spike" }
      ],
      "multiSelect": false
    }
  ]
}

Risk Assessment for Trending Tokens

Evaluate tokens before recommending:

Metric	Low Risk	Medium Risk	High Risk
Market Cap	>$50M	$5M-$50M	<$5M
Pool TVL	>$1M	$100k-$1M	<$100k
24h Volume	Consistent	Spiking unusually	Very low
Contract Age	>30 days	7-30 days	<7 days

Always disclose risk level when presenting options. For high-risk tokens, explicitly warn about volatility and potential for loss.

Mandatory Warnings for High-Risk Tokens

When ANY of these conditions are met, you MUST use AskUserQuestion to warn the user and get explicit confirmation before generating a deep link:

• Contract age < 7 days: "This token contract is less than 7 days old. New tokens carry significantly higher risk of being scams or rug pulls."
• Pool TVL < $100k: "This pool has very low liquidity. You may experience significant slippage and difficulty selling."
• No sell liquidity detected: "This token may be a honeypot — tokens that can be bought but not sold. Proceed with extreme caution."
• Market cap < $5M: "This is a micro-cap token with high volatility. Only invest what you can afford to lose entirely."

Do NOT generate a deep link for high-risk tokens without explicit user acknowledgment via AskUserQuestion.

---

Step 1: Gather Swap Intent

Extract from the user's request:

Parameter	Required	Example
Input token	Yes	ETH, USDC, token address
Output token	Yes	USDC, WBTC, token address
Amount	Yes	1.5 ETH, $500 worth
Chain	Yes (default: Ethereum)	Base, Arbitrum, etc.

If any required parameter is missing, use AskUserQuestion with structured options:

For missing chain:

{
  "questions": [
    {
      "question": "Which chain do you want to swap on?",
      "header": "Chain",
      "options": [
        { "label": "Base (Recommended)", "description": "Low gas fees, fast transactions" },
        { "label": "Ethereum", "description": "Main network, higher gas" },
        { "label": "Arbitrum", "description": "Low fees, Ethereum L2" },
        { "label": "Optimism", "description": "Low fees, Ethereum L2" }
      ],
      "multiSelect": false
    }
  ]
}

For missing output token (when input is ETH):

{
  "questions": [
    {
      "question": "What token do you want to receive?",
      "header": "Output",
      "options": [
        { "label": "USDC", "description": "USD stablecoin" },
        { "label": "USDT", "description": "Tether stablecoin" },
        { "label": "DAI", "description": "Decentralized stablecoin" },
        { "label": "WBTC", "description": "Wrapped Bitcoin" }
      ],
      "multiSelect": false
    }
  ]
}

For missing amount:

{
  "questions": [
    {
      "question": "How much do you want to swap?",
      "header": "Amount",
      "options": [
        { "label": "0.1 ETH", "description": "~$320" },
        { "label": "0.5 ETH", "description": "~$1,600" },
        { "label": "1 ETH", "description": "~$3,200" },
        { "label": "Custom amount", "description": "Enter specific amount" }
      ],
      "multiSelect": false
    }
  ]
}

Always use forms instead of plain text questions for better UX.

Step 2: Resolve Token Addresses

For token symbols, resolve to addresses using known tokens or web search:

Native tokens: Use NATIVE as the address parameter.

Common tokens by chain - see ../../references/chains.md for full list:

Token	Ethereum	Base	Arbitrum
USDC	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	0xaf88d065e77c8cC2239327C5EDb3A432268e5831
WETH	0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2	0x4200000000000000000000000000000000000006	0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
WBTC	0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599