Skills, subagents, hooks and MCP

What	Where	Notes
Project memory	FORGE.md, FORGE.local.md	Loaded every session. /memory edits them.
Slash commands	.forge/commands/<name>.md	Supports $ARGUMENTS, $1, shell output and @file references.
Skills	.forge/skills/<name>/SKILL.md	Frontmatter name and description; loaded when relevant.
Subagents	.forge/agents/<name>.md	Frontmatter name, description, tools, model.
Hooks	settings.json → hooks	Shell commands on events such as PreToolUse.
MCP servers	.mcp.json, or forge mcp add	stdio or HTTP. /import copies servers from Codex, Cursor and Gemini CLI.
Plugins	~/.forge/plugins/<name>/	Bundles of everything above. /plugin install <name> installs from the marketplace.

User-level copies of each live under ~/.forge/.