One Free App Runs All Your AI Coding Agents
Herdr lets AI agents run other AI agents, free, open-source, and 15+ tools deep. Here's how Claude Code vs Cursor supervision actually holds up. Herdr is a free, open-source terminal multiplexer that lets one AI agent open, command, and read results from other AI agents, including Claude Code, Codex, Cursor Agent, and GitHub Copilot CLI. This video tests whether that supervision is real leverage or just a nicer UI wrapped around the same babysitting work, using the vendor's own documentation as the source of truth. Built in Rust as a roughly 10MB single binary under Apache-2.0, Herdr auto-detects 15+ coding agents with zero config and runs inside terminals you already use, iTerm2, Kitty, Alacritty, WezTerm, Ghostty, rather than replacing them. A client-server architecture keeps agent sessions alive in the background even if you close the window, so a supervising agent can hand a diff to a 'reviewer' agent, wait, and read the answer back hours later. The catch: most agents on the roster (Claude Code, Codex, Cursor Agent, Copilot CLI, and more) have no real lifecycle hooks. Herdr instead reads a live screen snapshot and matches it against remote pattern files to guess whether an agent is working, blocked, or idle, and when nothing matches, it defaults to idle, even if the agent is actually stuck. This video walks through that mechanism, the four-move handoff between agents, the 30k+ GitHub stars and 2.2k forks, the Y Combinator F26 backing, and where the chain of supervision actually breaks in practice. For developers already running multiple coding agents in parallel, comparing Claude Code vs Cursor, or testing AI automation across Codex, Copilot, and OpenCode, this is a grounded look at what one AI supervising another can and can't actually verify. Chapters: 0:00 One AI Now Runs The Rest 0:29 The Vendor Admits It Outright 1:48 Four Moves To Hand Off Work 2:55 Why One Agent Isn't Enough 3:56 More Than A Fancy Terminal 5:07 Free Tool, Fast Growth 5:59 Funded, But Still Open 6:46 What The Manager Can't See 7:40 Left Running While You're Gone 8:45 Just A Screenshot Guess 10:38 Where The Whole Thing Breaks 12:03 The Internet's Rug-Pull Fear 13:10 So Is This Actually Big Tools & resources mentioned: - Herdr: https://herdr.dev - Herdr Docs: Agents: https://herdr.dev/docs/agents - Herdr Docs: Socket API: https://herdr.dev/docs/socket-api - Herdr Docs: CLI Reference: https://herdr.dev/docs/cli-reference - Claude Code: https://claude.com/claude-code - Codex - GitHub Copilot CLI - Cursor - Herdr Agents Documentation: https://herdr.dev/docs/agents/ - Herdr Socket API: https://herdr.dev/docs/socket-api/ - Herdr CLI Reference: https://herdr.dev/docs/cli-reference/ - Cursor Agent - OpenCode About The Stack The Stack helps you build with AI. Each video takes one tool, model, or workflow and shows how it works in a few focused minutes, with the real benchmarks and real costs. We go deep on Claude Code and Cursor for AI coding, AI agents and MCP servers, the open-source AI tools and GitHub repos most people miss, RAG and vector search, fine-tuning, and running local LLMs on your own machine with Ollama and LM Studio. We compare models like ChatGPT and Claude, test AI automation with Zapier, Make, and n8n, and flag the tools that actually ship. Subscribe for new breakdowns: https://www.youtube.com/@the-stack-ai?sub_confirmation=1 #AIAgents #ClaudeCode #Herdr #AIAutomation #Coding
