Codex × Jev: Skills, MCP and routing
These operate at different layers. One plugin does not provide them all.
Skill: guide how an agent works
Skills organize task instructions and reusable working knowledge. The official TypeSafe Skills repository provides workflow skills and installation entry points.OpenAI Skills documentation · Official TypeSafe Skill
Start here to guide your coding assistant toward primary documentation and sound question design. A Skill does not provide API credentials.
MCP: expose decisions as callable tools
Use official Codex documentation for MCP integration. TypeSafe MCP is a separate community implementation of TypeSafe decision tools; verify both independently.OpenAI MCP documentation · Community MCP repository
Keep explicit input/output contracts and confirmation for sensitive operations. A risk score is not a complete permissions system.
Routing and context change execution flow
Jev Codex Router uses decisions for model routing. fast-dev-compaction handles context around Codex session compaction. They provide different capabilities.Routing project source · Context project source
Use an isolated test environment and check dependency versions and hooks. Author-reported savings are not presented as our measurements.