rdmbair15m5-changelog-20260829-2133-stitch-mcp-configuration-all-agents

Configured Google Stitch MCP server (stitch-mcp) across all local agent harnesses and IDE environments: Antigravity/AGY, Antigravity IDE, Claude Code, Claude Desktop, and Codex.

Scope

• Host: rdmbair15m5
• Subsystems: Agent MCP settings (Gemini, Claude, Codex)
• Service: Google Stitch UI Design-to-Code MCP integration

Changes

1. Antigravity / AGY & Antigravity IDE:

   • Updated ~/.gemini/config/mcp_config.json, ~/.gemini/antigravity/mcp_config.json, and ~/.gemini/antigravity-ide/mcp_config.json to register "stitch" via npx -y stitch-mcp.
   • Backups created: *.bak-stitch-20260829.

2. Claude Code & Claude Desktop:

   • Added "stitch" MCP server to ~/.claude.json.
   • Added "stitch" MCP server to ~/Library/Application Support/Claude/claude_desktop_config.json and ~/Library/Application Support/Claude-3p/claude_desktop_config.json.
   • Backups created: *.bak-stitch-20260829.

3. Codex:

   • Added [mcp_servers.stitch] block (command = "npx", args = ["-y", "stitch-mcp"]) to ~/.codex/config.toml.
   • Backup created: ~/.codex/config.toml.bak-stitch-20260829.

Verification Evidence

• Python validation script confirmed 100% valid JSON and TOML parsing across all updated configuration files:
  • ~/.gemini/config/mcp_config.json -> active servers: ['chrome-devtools', 'mem0-shared', 'stitch']
  • ~/.gemini/antigravity/mcp_config.json -> active servers: ['chrome-devtools', 'mem0-shared', 'stitch']
  • ~/.gemini/antigravity-ide/mcp_config.json -> active servers: ['chrome-devtools', 'mem0-shared', 'stitch']
  • ~/.claude.json -> active servers: ['rdworkbench', 'chrome-devtools', 'tyrell', 'replicantdb', 'mem0-shared', 'stitch']
  • ~/Library/Application Support/Claude/claude_desktop_config.json -> active servers: ['mem0-shared', 'stitch']
  • ~/.codex/config.toml -> active servers: ['node_repl', 'computer-use', 'rdworkbench', 'chrome-devtools', 'tyrell', 'replicantdb', 'mem0-shared', 'cua_repl', 'stitch']

Backup and Rollback

• Backups preserved alongside each config file with extension .bak-stitch-20260829.
• To rollback, restore the respective .bak-stitch-20260829 file.