Hosts: Cursor, Claude Code, Copilot, Antigravity
Lifecycle rules live in AGENTS.md. wk init and wk export-rules write a thin pointer for each host. wk mcp writes MCP config in the file that host actually reads. wk model resolve --host … maps the same capability class to that host’s model slug.
Windsurf still gets a rules pointer (.windsurfrules). It does not get a first-class MCP writer yet.
What each host gets
| Surface | Cursor | Claude Code | GitHub Copilot / VS Code | Antigravity / Gemini CLI |
|---|---|---|---|---|
| Rules | .cursorrules | CLAUDE.md | .github/copilot-instructions.md | GEMINI.md |
| Project MCP | .cursor/mcp.json | .mcp.json | .vscode/mcp.json (servers) and shared .mcp.json | .agents/mcp_config.json |
| User MCP | ~/.cursor/mcp.json | ~/.claude.json (mcpServers) | ~/.copilot/mcp-config.json | ~/.gemini/config/mcp_config.json |
| Model overlay | models/hosts/cursor.yaml | models/hosts/claude.yaml | models/hosts/copilot.yaml | models/hosts/antigravity.yaml |
External skills (wk sync) | ~/.cursor/skills | symlink ~/.claude/skills | not mirrored (use repo .mcp.json) | symlink ~/.gemini/skills |
Canonical content is still AGENTS.md, skills/, and mcps/. Host files are adapters.
wk init . --mcp default --hook
wk align .
wk mcp default --install
wk mcp default --install --host claude
wk mcp default --project
wk model resolve --skill agent-tdd --spec-complete --host claude
wk model resolve --skill agent-tdd --spec-complete --host copilot
wk model resolve --skill agent-tdd --spec-complete --host antigravity
--host accepts cursor, claude, copilot, antigravity (aliases: gemini, agy), a comma list, or all (default).
What is still host-shaped
Cursor’s in-product skill picker and Task model slugs are the deepest. Claude Code and Antigravity pick up Agent Skills from their user skill dirs after wk sync. Copilot Chat reads .vscode/mcp.json; Copilot’s Agent Host also reads workspace .mcp.json.
Kit-authored skills/agent-* stay in the Waykit clone (~/.agents/skills). Hosts that do not walk that tree still need the handshake: read ~/.agents/AGENTS.md, then load the skill file.
OAuth popups differ (Cursor vs Claude vs VS Code). Stdio servers that need env vars still need those vars in the process that launches the host.
EDD vs hosts
The eval runner is wk, not the IDE chat. --style cli --cli cursor-agent|claude|agy can drive a live host binary. That path is part of EDD (alpha), not a complete eval platform.