Theo Browne, the developer behind the T3 Stack and the T3 Code agent orchestrator, has released his everyday coding-agent skills in an MIT-licensed repository called tstack. Its nine skills work with Claude Code or Codex and automate pull request filing, CI monitoring, automated review, branch updates, and merging.
Skills package repeatable agent workflows
Agent skills are reusable instruction packages that a coding agent can invoke by name. Each skill centers on a readable SKILL.md file containing the workflow, tool usage, and supporting context. Claude Code loads skills from ~/.claude/skills/, while Codex uses ~/.codex/skills/.
Browne favors skills that run shell commands while loading and place the results directly into the agent’s context. He argues that this approach removes planning steps the agent would otherwise perform, allowing shorter instructions and more consistent execution.