Cole Medin is the AI-agent educator behind YouTube’s largest build-your-own-agent channel and the open-source Archon workflow engine, the video band’s tool-shipping tutorial slot.
His channel teaches agent construction by shipping agent tooling in public, which puts the value in Archon rather than in the videos: the tutorials are beginner-to-intermediate with sponsor reads, while the tool itself is a 23.7k-star MIT project the orchestration category already profiles on its product reality.
What it is #
A YouTube channel (youtube.com/@colemedin, about 228,000 subscribers as of 2026-10-15) plus a pair of open-source repositories, run by a developer who teaches AI-agent building through code-along builds.
The breakout is Archon, introduced on 2025-03-03 as “an AI agent that builds AI agents” and iterated in public ever since; the orchestration category’s note records its product reality as a YAML workflow runner over Claude Code, Codex SDK, and local-model harnesses.
The companion
ottomator-agents repository collects his reference agent implementations.
His stated upload schedule is at least weekly, Wednesdays on the channel description, and the archive shows 325 videos.
Status #
Active at high cadence as of 2026-10-15. The Archon repository shows 23,687 stars under the MIT license with a push dated 2026-10-15, so the tool side is under daily development. The channel is his publication of record: there is no blog or newsletter, and his written record lives in repository documentation and video descriptions. His agent-domain breakout, the Archon build-in-public series, first surfaced in March 2025, inside this section’s coverage window, which is why he qualifies as a new voice rather than an established one pivoting in.
Strengths #
- He ships the thing he teaches: the Archon videos walk a shipped repository through successive versions, so a viewer can diff the claims against the code the same day.
- The build-in-public format shows the failure states most tutorials cut: version pivots, rewrites of the agent-generation approach, and the migration from “agent that builds agents” to workflow runner are all documented on camera.
- The ottomator-agents collection gives his patterns in runnable form, which makes his teaching unusually checkable for the video band.
- His coverage of agent architecture (sub-agents, MCP wiring, task management, knowledge bases) is the most complete free build sequence available on the builder side.
Cautions #
- Tutorial depth stops at beginner-to-intermediate: the videos teach construction patterns, not the verification and evaluation discipline the eval-focused members of this category demand.
- The teaching carries commerce: paid-community (Dynamis) funnels and sponsor segments sit inside the tutorials, so tool recommendations need discounting against members who publish under no-sponsor commitments.
- The tool-first lens cuts both ways: his architectural advice trends toward what a workflow runner can enforce, which reads as product marketing for Archon when the question is which harness to pick.
- The reference repository is aging: ottomator-agents last saw a push on 2025-11-09, so treat it as a snapshot of his patterns rather than a live project.
Pricing #
Free to watch on YouTube. Revenue comes from a paid community (Dynamis), course funnels, and sponsor segments inside videos; none of the content itself is paywalled.
Compared to #
- IndyDevDan: the two weekly video educators split by object of worship, Dan sells frameworks and a worldview, Medin ships an actual tool; take Dan for the conceptual stack and Medin when you want to read code.
- Owain Lewis: both are clone-and-run builders, but Lewis builds software factories from existing harnesses while Medin builds the agent tooling layer itself.
- AI Jason: Jason demonstrates finished workflows end to end at slower cadence; Medin teaches the construction underneath at higher cadence with lower polish.
Bottom line #
Recommended for engineers who learn agent construction by building and want a maintained, starred codebase to follow rather than opinions alone. Not for anyone evaluating harnesses or model choices, where his register is tutorial-enthusiast with commerce attached, and not as a substitute for the eval-discipline voices.
Top 5 recommended reading #
The OFFICIAL Archon Guide - 10x Your AI Coding Workflow - The current canonical walkthrough of the tool he ships, from install through the knowledge-and-task workflow that is his actual thesis.
Archon repository - The tool itself, whose README and version history document the build-in-public process (23,687 stars, MIT, as of 2026-10-15).
Changes #
- 2026-10-15 - Created as the video band’s tool-shipping tutorial slot, admitted on the in-window Archon breakout (March 2025) with all cited URLs fetched this run.
See also #
- Archon - the orchestration category’s profile of the tool he builds and teaches, including its workflow-runner product reality
- IndyDevDan - the video band’s weekly worldview slot beside his build-the-tool slot
- Owain Lewis - the clone-and-run factory builder nearest his format
- Agentic Coding Tools Landscape - the harness landscape his tutorials build on
References #