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Dev.to
7/12/2026
Building a Multi-Agent AI System from Scratch (No Frameworks)

Building a Multi-Agent AI System from Scratch (No Frameworks)

Short summary

A tutorial showing how to build a 5-agent pipeline (Researcher → Writer → Editor → Reviewer → Publisher) in pure Python without CrewAI or AutoGen. Each agent calls a local Ollama instance with a role-specific system prompt and passes output to the next. The post includes the full ~50-line implementation, configuration tips like per-agent temperature and model selection, and use case examples.

  • 5-agent pipeline in ~50 lines of pure Python using Ollama — no frameworks needed
  • Each agent has a role, system prompt, and passes output sequentially
  • Supports per-agent model selection, temperature tuning, and fallback strategies

Generated with AI, which can make mistakes.

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