docs: register the MCP server from an installed release

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/agents.md

@@ -43,6 +43,26 @@ Desktop, Cursor and the like) take the same `command` and `args`.
 - **Bridge** (`["mcp", "--bridge", "9877"]`): drives a running `effectcraft --control 9877`, so you
   see every change live. Bridge mode adds `screenshot` and the `ui_*` tools.
 
+### From an installed release
+
+The release packages ship `effectcraft-cli` alongside the desktop app, so no build is needed:
+
+| Install | CLI |
+|---|---|
+| Windows (MSI) | `C:\Program Files\EffectCraft\effectcraft-cli.exe`, not added to `PATH` |
+| Linux (deb, rpm) | `/usr/bin/effectcraft-cli` |
+| macOS | the separate `effectcraft-cli-<version>-macos-universal.zip` release asset (the `.app` holds only the desktop app) |
+
+```sh
+# Windows
+claude mcp add effectcraft -- "C:\Program Files\EffectCraft\effectcraft-cli.exe" mcp
+# Linux, or macOS with the CLI unzipped onto PATH
+claude mcp add effectcraft -- effectcraft-cli mcp
+```
+
+An unofficial community plugin, [artcraft-claude-plugin](https://github.com/sawizzle/artcraft-claude-plugin),
+registers the installed ArtCraft apps in Claude Code in one step and adds usage notes for agents.
+
 The server speaks JSON-RPC 2.0 over stdio, one message per line, and supports MCP protocol versions
 2025-06-18, 2025-03-26 and 2024-11-05 (`initialize`, `ping`, `tools/list`, `tools/call`).