Open-Source AI Agent Stack

Build a fully self-hosted AI automation pipeline using Ollama for local models, OpenClaw for autonomous agents, and n8n for workflow orchestration with no vendor lock-in, no per-message fees, and complete data privacy.

automationintermediate$0-50/month (infrastructure only)
Best for: developers, DevOps engineers, privacy-conscious teams, startups optimizing AI costs, organizations with strict data handling requirements

Why these tools work together

Ollama gives you the foundation: fast, free, private AI inference running on your own hardware. No API keys, no usage fees, no data leaving your network. OpenClaw turns that raw inference power into an agent that can actually do things: monitor inboxes, review code, manage tasks, and chain together multi-step workflows across 50+ platforms. But agents need triggers and orchestration. n8n provides the glue: visual workflow automation that fires agents on events, routes their output to the right places, and handles the conditional logic between steps. The result is a complete AI automation stack where you own every layer, from the model weights to the business logic, with zero recurring software costs.

How it works

  1. 1

    Deploy open-source models locally (Llama 3, Mistral, or Phi) for fast, private inference with no API costs

    A local LLM API endpoint running on your hardware

  2. 2

    Configure OpenClaw to use local Ollama models as its AI backend, set up messaging integrations and agent skills

    An autonomous agent connected to your messaging platforms and developer tools

  3. 3

    Build visual workflows that trigger OpenClaw agents on events like new emails, Slack messages, GitHub PRs, and scheduled tasks

    Automated pipelines that orchestrate AI agents across your business tools

Tools in this stack

Local LLM runtime that runs open-source models on your own hardware with zero API costs

A simple local model runner and manager that makes downloading and serving local LLMs much easier than doing everything by hand.

Autonomous AI agent platform that turns local or cloud models into agents acting across your apps

OpenClaw is a free, open-source AI agent platform that runs autonomously across messaging apps and developer tools. It is the fastest-growing open-source project in history, best suited for technical users who want full control over their AI automation stack.

Visual workflow automation that connects agents to business tools with trigger-based pipelines

n8n is the technical team's automation platform: flexible, scriptable, and available as both cloud and self-hosted. It is one of the strongest choices for builders who want more control than SaaS automation tools usually allow.

Alternatives: make, zapier

Estimated cost

$0-50/month (infrastructure only)

Total across all tools. Actual cost depends on the plans you choose.

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Frequently asked questions

What does the Open-Source AI Agent Stack stack cost?
The estimated total cost is $0-50/month (infrastructure only). Costs vary depending on the plans you choose for each tool.
Who is the Open-Source AI Agent Stack stack best for?
This stack works best for developers, DevOps engineers, privacy-conscious teams, startups optimizing AI costs, organizations with strict data handling requirements.
Can I replace any of the tools in this stack?
Yes. n8n can be replaced with make or zapier.
Do I need all 3 tools?
Each tool plays a specific role in the workflow. For the best results, we recommend using all 3.
How hard is this stack to set up?
This stack is rated intermediate. Expect a few hours to connect the tools and test the workflow.

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