Pin versions

agents.yaml at the repo root pins each CLI's version. Every agents call inside the tree honors it.

The file

# agents.yaml
agents:
  claude: "2.1.113"
  codex:  "0.116.0"
  gemini: "2.5.4"

agents run claude ... inside that tree resolves to Claude Code 2.1.113. agents run claude ... outside it uses your global default. Same idea as .nvmrc or .tool-versions.

Coming soon

Full reference — semver ranges, lock files, install-on-demand. For now agents.yaml accepts exact version strings.