• LOGIC
  • INTERFACE
  • FAILURE
  • HUMAN

How to debug smart contracts with your AI

Connect Polygonscan to your AI client once. From there, your agent can pull on-chain data to find exactly where your code or transactions went wrong.

Ask AI about this page

Short answer

How can I use AI to debug smart contracts?

Your agent pulls verified source code and ABIs from Polygonscan to understand the contract's logic. It then checks transaction statuses to identify why specific calls failed. You get a clear path to fixing the bug.

Debugging outcomes.

Where your findings land.

The data your agent pulls results in these four outcomes.

LOGIC

Code analysis

The AI reads the verified source code to map out function behavior. You get a clear explanation of how the contract works.

INTERFACE

ABI mapping

By pulling the ABI, your agent learns the exact input and output requirements. This helps you spot parameter mismatches.

FAILURE

Transaction triage

The AI checks the status of specific transactions to see if they reverted. You find the exact reason for a failed execution.

HUMAN

Manual fixes

The AI identifies the error, but you must write and deploy the fix. The agent provides the diagnosis, not the deployment.

The workflow

What your AI does when the contract address arrives.

Your agent uses Polygonscan data to build a model of the contract and its history.

  1. Fetch source code

    Your agent pulls the verified Solidity code from the block explorer to see the actual logic on-chain.

    get_contract_source_code

  2. Map the ABI

    The AI retrieves the application binary interface to know which functions are available to call.

    get_contract_abi

  3. Inspect transactions

    Your agent looks up the status of specific transaction hashes to see if they hit a revert.

    get_tx_status

  4. Identify errors

    The AI compares the code logic against the transaction results to find the mismatch.

    get_contract_source_codeget_tx_status

Try it

Copy these to start.

Use these prompts to kick off a debugging session.

Starting points

Swap the contract addresses and transaction hashes with your own data.

Polygonscan Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_mNF9vvQFRY8109YvE9ENARWWZSO0plXKvgAXC1n9/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Polygonscan capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "polygonscan-polygon-block-explorer-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_mNF9vvQFRY8109YvE9ENARWWZSO0plXKvgAXC1n9/mcp"
    }
  }
}
Copy into chat04

  • Pull the source code for contract 0x123... and explain the logic in the transfer function.

  • Get the ABI for 0xabc... and tell me what parameters the mint function requires.

  • Check the status of transaction 0x789... and tell me why it reverted based on the contract code.

  • Compare the source code of 0x123... with the failed transaction 0x456... to find the logic error.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Polygonscan once, then ask.

One connection gives your AI access to Polygonscan data. Your credentials stay encrypted, and you can start debugging immediately.

Connect Polygonscan to your AI

FAQ

How this task behaves.

  • 01

    Can the AI fix the bug and deploy it for me?

    No. The AI can only read the code and suggest fixes. You have to handle the actual deployment and code changes yourself.

  • 02

    Can the AI see unverified contract code?

    No. The AI can only pull source code that has been verified on Polygonscan.

  • 03

    Does the AI need my private keys?

    No. This MCP only reads public blockchain data like code, ABIs, and transaction statuses.

  • 04

    Can the AI execute transactions on my behalf?

    No. The tools only allow the AI to read data from the explorer; it cannot send transactions or sign anything.

  • 05

    What if the contract isn't on Polygonscan?

    If the code isn't verified on the explorer, the AI won't be able to pull the source code to analyze it.

  • More questions about Polygonscan? The Connector page answers them. See everything the Polygonscan Connector can do

Connect Polygonscan to Claude, Cursor, ChatGPT & more