Build a Tool-Using Agent in 80 Lines of Python

📰 Dev.to · Gabriel Anhaia

Anthropic API, two tools, a real loop, an iteration cap, and the error path most tutorials skip. No framework.

Published 27 Apr 2026

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Title: Build a Tool-Using Agent in 80 Lines of Python

URL Source: https://dev.to/gabrielanhaia/build-a-tool-using-agent-in-80-lines-of-python-5aj2

Published Time: 2026-04-27T19:39:50Z

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# Build a Tool-Using Agent in 80 Lines of Python - DEV Community
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Posted on Apr 27

# Build a Tool-Using Agent in 80 Lines of Python

[#ai](https://dev.to/t/ai)[#agents](https://dev.to/t/agents)[#tutorial](https://dev.to/t/tutorial)[#python](https://dev.to/t/python)

* **Book:**[AI Agents Pocket Guide](https://www.amazon.com/dp/B0GYJZ2XJD)
* **My project:**[Hermes IDE](https://hermes-ide.com/) | [GitHub](https://github.com/hermes-hq/hermes-ide) — an IDE for developers who ship with C
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