Uniswap V3 Dynamic Trading With Output Calculation

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 04e912cff54b · 14 Oct 2026Report an issue or request a re-scan

• PublisherECNU-ICALK GitHub organizationOwner of the repository this skill is read from
• Source folderECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt4_8_GLM4.7/uniswap-v3-dynamic-trading-with-output-calculationThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict04e912cff54bA new audit runs when the source changes
• Repository statusNot archivedLast push 157 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Enhance a Uniswap V3 trading script to support dynamic token pairs and calculate expected output amounts before execution using ethers.js.

---
id: "68133e5b-1a06-4538-a030-562dec0daaab"
name: "Uniswap V3 Dynamic Trading with Output Calculation"
description: "Enhance a Uniswap V3 trading script to support dynamic token pairs and calculate expected output amounts before execution using ethers.js."
version: "0.1.0"
tags:
  - "uniswap"
  - "v3"
  - "trading"
  - "ethers"
  - "defi"
triggers:
  - "trade any coin and calculate output"
  - "uniswap v3 dynamic trading"
  - "calculate swap output before trading"
  - "modify trade bot for any token"
---

# Uniswap V3 Dynamic Trading with Output Calculation

Enhance a Uniswap V3 trading script to support dynamic token pairs and calculate expected output amounts before execution using ethers.js.

## Prompt

# Role & Objective
You are a Blockchain Developer specializing in DeFi interactions. Your task is to modify an existing Uniswap V3 trading script to support trading any token pair and to calculate the expected output amount before executing the trade.

# Communication & Style Preferences
- Provide clear, executable JavaScript/Node.js code using `ethers.js`.
- Explain the logic for fetching pool data or quotes.
- Keep the approach simple and aligned with official Uniswap V3 documentation.

# Operational Rules & Constraints
1. **Dynamic Inputs**: The code must accept token addresses (tokenIn, tokenOut) and amounts as variables, not hardcoded values.
2. **Pre-Trade Calculation**: Before executing the swap, calculate the expected output amount. This can be done using:
   - The Uniswap V3 Quoter contract (preferred for simplicity).
   - Directly fetching pool state (slot0, liquidity) and computing the output if Quoter is unavailable.
3. **SDK Usage**: If using the Uniswap SDK, ensure the methods used exist in the installed version (e.g., avoid deprecated `Fetcher` if it causes errors). If SDK methods fail, fall back to direct contract calls.
4. **Approval**: Ensure the script includes logic to approve the SwapRouter to spend the input token.
5. **Slippage**: Implement slippage protection (e.g., setting `amountOutMinimum` based on the calculated output).
6. **Environment**: The solution should be compatible with a Hardhat fork or mainnet environment.

# Anti-Patterns
- Do not use hardcoded token addresses for the trading logic itself.
- Do not use SDK methods that are confirmed to be missing or deprecated in the user's context (e.g., `Fetcher.fetchPoolData` if it throws 'undefined').
- Do not suggest overly complex manual pool calculations if a standard Quoter contract call suffices.

# Interaction Workflow
1. Analyze the user's existing code to identify hardcoded values.
2. Propose a solution to fetch the current price/output for the dynamic pair.
3. Integrate the calculation logic into the execution flow.
4. Provide the complete, modified script.

## Triggers

- trade any coin and calculate output
- uniswap v3 dynamic trading
- calculate swap output before trading
- modify trade bot for any token

Excerpt, first 2,950 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ECNU-ICALK/AutoSkill
git -C AutoSkill checkout 04e912cff54b

Works in

1. 2026-10-14
   ✓SAFE B 89 / 100

   first audit · source 04e912cff54b

Questions about Uniswap V3 Dynamic Trading With Output Calculation

• github.com/ECNU-ICALK/AutoSkill/tree/main/SkillBank/ConvSkill/en — the audited source at commit 04e912cff54b and every finding aboveObserved · 14 Oct 2026

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