Coding agents & CLIs

coleam00/Archon

Open-source harness builder for coding agents

23k
MIT
TypeScript

What it is and why it matters

Archon lets you compose several coding agents that work autonomously on long tasks through defined workflows, including Ralph-style loops and parallel execution. Although it started for AI coding, its author shows the same harness works for any agentic flow: in the video he aims it at generating batches of marketing videos. It matters because it standardizes agent orchestration beyond pure coding.

Key points

Orchestrates a parallel fan-out of agents that drain a task queue
The primary agent (Claude Code, Codex) acts as orchestrator and monitors the workflows
Workflows are defined in YAML and can be reusable Ralph loops for code or other uses

Where we saw it

Cole Medin 2026-07-12 Shows Archon is not limited to code: it uses two workflows (explore and render) with parallel agents to generate product videos, with a human approval step in between. I Turned Claude Code Into a Complete Video Generation System (with Archon)

Same category

anomalyco/opencode Open-source coding agent for the terminal. Open detail herdrdev/herdr Terminal multiplexer for managing multiple coding agents. Open detail gsd-build/gsd-2 Autonomous agentic CLI that breaks projects into phases and tasks Open detail