Developer Tutorials

End-to-end integration guides with working code

Longer than API reference snippets on purpose. Each tutorial shows how EthIntel endpoints fit into real workflows — alerting, pre-sign review, portfolio UX, and extensions.

Node.js + fetch~100 lines

Build a Transaction Alert Bot in 30 Minutes

Node.js + fetch: poll addresses for new transactions and send Telegram/Discord notifications with explanations.

GET /api/explain/{txHash}

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React + fetch~150 lines

Add Safety Scanning to Your DApp's Sign Flow

React pre-sign review: call POST /api/scan before wallet signature and display risk score + signals in a modal.

POST /api/scan

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Next.js + API~200 lines

Build a Portfolio Transaction History Page

Next.js App Router page: fetch address profile + recent transactions with pagination and inline AI explanations.

GET /api/searchGET /api/address/{address}GET /api/explain/{txHash}

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Chrome MV3 + APIMulti-file

Embed Transaction Intelligence in Your Wallet Extension

Chrome MV3 extension: inject explanation cards on Etherscan pages with caching and safety banners.

POST /api/scanGET /api/risk/{address}

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How to use these guides

Each tutorial is a copy-paste-first build guide. Start with the raw Markdown, keep the API reference open in another tab, and replace demo transaction sources with your own product logic once the EthIntel calls are working.