---
title: "You Should Write An Agent"
url: https://daily.dev/posts/you-should-write-an-agent-krwovyz8f
source_url: https://fly.io/blog/everyone-write-an-agent/
type: article
source: "Fly.io"
published: 2025-11-06T20:22:29.176Z
updated: 2025-11-06T20:22:54.174Z
tags: ["ai", "python", "architecture", "llm", "openai"]
reading_time: 12
upvotes: 2
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# You Should Write An Agent

**[Fly.io](https://daily.dev/sources/flydotio)** · 12 min read · 2 upvotes · 0 comments

## Summary

Building LLM agents is surprisingly simple and accessible. Using just the OpenAI API and basic Python, developers can create functional agents with tool-calling capabilities in under 50 lines of code. The post walks through implementing a working agent from scratch, demonstrating context management, tool integration, and multi-turn conversations. It argues that understanding agents requires hands-on experience, challenges the necessity of frameworks like MCP, and explores open engineering problems around context engineering, token allocation, and balancing determinism with agent autonomy.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://fly.io/blog/everyone-write-an-agent/>

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- [Building AI Agents in Python](https://daily.dev/posts/building-ai-agents-in-python-d6gjflukc) · Planet Python · 1 upvotes · 1 comments

---

Tags: [#ai](https://daily.dev/tags/ai), [#python](https://daily.dev/tags/python), [#architecture](https://daily.dev/tags/architecture), [#llm](https://daily.dev/tags/llm), [#openai](https://daily.dev/tags/openai)

[View this post on daily.dev](https://daily.dev/posts/you-should-write-an-agent-krwovyz8f)