I Built an Open-Source Agent OS

Mihir N Modi — Sun, 17 May 2026 18:58:40 +0000

I built an operating system for AI agents.

Not a terminal. Not a chat app. A full dashboard that coordinates three agents — opencode (code/DevOps), Hermes Agent (memory/scheduling), and Gemini CLI (research) — into one unified control plane.

GitHub: github.com/modimihir07/agentic-os (https://github.com/modimihir07/agentic-os)

The Problem
I was jumping between three tools:

opencode for coding tasks
Hermes for scheduling and memory
Gemini CLI for web research

No shared context. No central dashboard. Every session started from zero.

The Solution: 7-Layer Architecture
Layer 7 Identity / Constitution
Layer 6 Self-Evolution
Layer 5 Scheduler + Health
Layer 4 Memory Graph
Layer 3 Skills Hub + Eval
Layer 2 Business Brain
Layer 1 Agent Router

Layer 1 routes tasks automatically: code → opencode, memory → Hermes, research → Gemini.

Layer 3 gives each skill a standardized structure (SKILL.md + learnings + eval + score history) so they improve over time.

Layer 4 provides persistent memory via a shared brain/ folder and SQLite FTS5 — agents remember context across sessions.

12 Features

3-Agent Engine — opencode + Hermes + Gemini CLI with auto-routing
16 Skills — executable packs with eval scoring
Cron Scheduler — APScheduler jobs (heartbeat, standup, audit)
Cost Analytics — track spending across providers
One-Click Backup — full tar.gz snapshots
Audit Trail — every action logged
Prompt Library — 10 reusable templates
Dark/Light Theme — GitHub-style dark mode
Standards System — auto-discover project conventions
Plugin Registry — extend via custom skills
Client Timeout — 200s AbortController for long queries
Memory — SQLite FTS5 + shared brain/ files

vs Claude Agent OS
Honest comparison with Julian Goldie's video project:

Claude Agent OS: Claude + OpenClaw + Hermes · $20/mo · Obsidian memory · No cost tracking · No backup · Tutorial only

Agentic OS (Mine): opencode + Hermes + Gemini · $0 (all free tiers) · Built-in memory · Built-in cost tracking · One-click backup · MIT License

Tech Stack
Backend: FastAPI (Python) · Frontend: vanilla JS SPA · Scheduler: APScheduler · Memory: SQLite FTS5 · Cost: $0 (Gemini Flash, OpenRouter free models)

Quick Start
git clone https://github.com/modimihir07/agentic-os.git
cd agentic-os && ./install.sh && ./start.sh
Open http://127.0.0.1:8080

Agentic OS is MIT licensed. Star it on GitHub if you find it useful.
👉 github.com/modimihir07/agentic-os (https://github.com/modimihir07/agentic-os)

DEV Community: Mihir N Modi

I Built an Open-Source Agent OS