{
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    "slug": "uniswap-swap-simulation",
    "name": "Uniswap Swap Simulation",
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    "category": "数据分析",
    "sourceUrl": "https://clawhub.ai/wpank/uniswap-swap-simulation",
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      "Extract the archive and review SKILL.md first.",
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        "Paste one of the prompts below and point your agent at the extracted folder."
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          "label": "New install",
          "body": "I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete."
        },
        {
          "label": "Upgrade existing",
          "body": "I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run."
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        "Confirm the extracted package includes the expected docs or setup files.",
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    "summary": "Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.",
    "steps": [
      "Download the package from Yavira.",
      "Extract it into a folder your agent can access.",
      "Paste one of the prompts below and point your agent at the extracted folder."
    ],
    "prompts": [
      {
        "label": "New install",
        "body": "I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete."
      },
      {
        "label": "Upgrade existing",
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  "documentation": {
    "source": "clawhub",
    "primaryDoc": "SKILL.md",
    "sections": [
      {
        "title": "Overview",
        "body": "This skill covers simulating Uniswap swaps, calculating price impact, and analyzing routing decisions."
      },
      {
        "title": "Key Concepts",
        "body": "Price Impact: The change in pool price caused by a swap. Larger swaps have higher impact.\nSlippage: Difference between expected and executed price, including price movement between submission and execution.\nRouting: Finding the optimal path across pools and protocols for best execution."
      },
      {
        "title": "Simulating a Swap",
        "body": "Use the Quoter contract to simulate swaps without executing:\n\nimport { createPublicClient, http, encodeFunctionData } from \"viem\";\n\n// QuoterV2 for v3 pools\nconst quote = await client.readContract({\n  address: quoterV2Address,\n  abi: quoterV2Abi,\n  functionName: \"quoteExactInputSingle\",\n  args: [\n    {\n      tokenIn,\n      tokenOut,\n      amountIn,\n      fee,\n      sqrtPriceLimitX96: 0n,\n    },\n  ],\n});\n\n// Returns: [amountOut, sqrtPriceX96After, initializedTicksCrossed, gasEstimate]"
      },
      {
        "title": "Price Impact Calculation",
        "body": "function calculatePriceImpact(\n  amountIn: bigint,\n  amountOut: bigint,\n  marketPrice: number, // token1/token0\n  decimals0: number,\n  decimals1: number,\n): number {\n  const executionPrice =\n    Number(amountOut) / 10 ** decimals1 / (Number(amountIn) / 10 ** decimals0);\n  return Math.abs(1 - executionPrice / marketPrice);\n}"
      },
      {
        "title": "Slippage Tolerance",
        "body": "Stablecoin pairs: 0.01% - 0.05%\nMajor pairs (ETH/USDC): 0.1% - 0.5%\nVolatile pairs: 0.5% - 1.0%\nLow liquidity: 1% - 5%\n\nCalculate minimum amount out:\n\nconst minAmountOut = (amountOut * (10000n - BigInt(slippageBps))) / 10000n;"
      },
      {
        "title": "Multi-hop Routing",
        "body": "For tokens without direct pools, route through intermediary tokens:\n\n// ETH -> USDC -> DAI (two hops)\nconst path = encodePacked(\n  [\"address\", \"uint24\", \"address\", \"uint24\", \"address\"],\n  [WETH, 3000, USDC, 100, DAI],\n);\n\nconst quote = await client.readContract({\n  address: quoterV2Address,\n  abi: quoterV2Abi,\n  functionName: \"quoteExactInput\",\n  args: [path, amountIn],\n});"
      },
      {
        "title": "Gas Estimation",
        "body": "Typical gas costs by swap complexity:\n\nSingle hop: ~130,000 gas\nTwo hops: ~200,000 gas\nThree hops: ~270,000 gas\n\nAlways add a 15-20% buffer to gas estimates."
      },
      {
        "title": "MEV Considerations",
        "body": "When building swap tools:\n\nRecommend private RPCs (Flashbots Protect) for large swaps\nWarn users about sandwich attack risk for high-impact swaps\nSuggest using deadline parameters to limit exposure"
      }
    ],
    "body": "Uniswap Swap Simulation\nOverview\n\nThis skill covers simulating Uniswap swaps, calculating price impact, and analyzing routing decisions.\n\nKey Concepts\nPrice Impact: The change in pool price caused by a swap. Larger swaps have higher impact.\nSlippage: Difference between expected and executed price, including price movement between submission and execution.\nRouting: Finding the optimal path across pools and protocols for best execution.\nSimulating a Swap\n\nUse the Quoter contract to simulate swaps without executing:\n\nimport { createPublicClient, http, encodeFunctionData } from \"viem\";\n\n// QuoterV2 for v3 pools\nconst quote = await client.readContract({\n  address: quoterV2Address,\n  abi: quoterV2Abi,\n  functionName: \"quoteExactInputSingle\",\n  args: [\n    {\n      tokenIn,\n      tokenOut,\n      amountIn,\n      fee,\n      sqrtPriceLimitX96: 0n,\n    },\n  ],\n});\n\n// Returns: [amountOut, sqrtPriceX96After, initializedTicksCrossed, gasEstimate]\n\nPrice Impact Calculation\nfunction calculatePriceImpact(\n  amountIn: bigint,\n  amountOut: bigint,\n  marketPrice: number, // token1/token0\n  decimals0: number,\n  decimals1: number,\n): number {\n  const executionPrice =\n    Number(amountOut) / 10 ** decimals1 / (Number(amountIn) / 10 ** decimals0);\n  return Math.abs(1 - executionPrice / marketPrice);\n}\n\nSlippage Tolerance\nStablecoin pairs: 0.01% - 0.05%\nMajor pairs (ETH/USDC): 0.1% - 0.5%\nVolatile pairs: 0.5% - 1.0%\nLow liquidity: 1% - 5%\n\nCalculate minimum amount out:\n\nconst minAmountOut = (amountOut * (10000n - BigInt(slippageBps))) / 10000n;\n\nMulti-hop Routing\n\nFor tokens without direct pools, route through intermediary tokens:\n\n// ETH -> USDC -> DAI (two hops)\nconst path = encodePacked(\n  [\"address\", \"uint24\", \"address\", \"uint24\", \"address\"],\n  [WETH, 3000, USDC, 100, DAI],\n);\n\nconst quote = await client.readContract({\n  address: quoterV2Address,\n  abi: quoterV2Abi,\n  functionName: \"quoteExactInput\",\n  args: [path, amountIn],\n});\n\nGas Estimation\n\nTypical gas costs by swap complexity:\n\nSingle hop: ~130,000 gas\nTwo hops: ~200,000 gas\nThree hops: ~270,000 gas\n\nAlways add a 15-20% buffer to gas estimates.\n\nMEV Considerations\n\nWhen building swap tools:\n\nRecommend private RPCs (Flashbots Protect) for large swaps\nWarn users about sandwich attack risk for high-impact swaps\nSuggest using deadline parameters to limit exposure"
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    "sourceLabel": "tencent",
    "provenanceUrl": "https://clawhub.ai/wpank/uniswap-swap-simulation",
    "publisherUrl": "https://clawhub.ai/wpank/uniswap-swap-simulation",
    "owner": "wpank",
    "version": "0.1.0",
    "license": null,
    "verificationStatus": "Indexed source record"
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