Redacted excerpt; full evidence withheld.

$ cd <host-path> && ls -la && cat README.md 2>/dev/null | head -300
exit: 0
GENTS.md` (plus a `CLAUDE.md` that imports it).
That is the whole contract: Codex, Cursor, Aider, Gemini CLI, OpenCode, and any other bash-capable agent read the same file, and there is no per-host scaffold.

The CLI is the primary runtime; MCP is for hosts that prefer typed tool calls.
`vibe host` prints config by default, and `--write` applies it:

```bash
vibe host setup all                                   # print snippets for every host
vibe host setup cursor --write                        # write .cursor/mcp.json
vibe host setup claude-desktop ~/dev/videos --write   # pass the workspace dir
[excerpt truncated]