# Lovable.dev MCP Js (@lovable.dev/mcp-js) - AgentBreakWatch Reference

> TL;DR Verdict: Lovable.dev MCP Js (`@lovable.dev/mcp-js`) is currently at v3.3.0 on NPM (published 2026-10-23), with a 90-day Stability Score of 78/100 (B) and MEDIUM schema drift risk across 32 releases in the last 90 days. Built on MCP SDK (1.28.0); recent release v3.3.0 (up from v3.2.2) updates Database & Backend MCP tool schemas and transport handling (32 releases in last 90d). Pin exact version v3.3.0 in .mcp.json to avoid silent parameter drift.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/lovable-dev-mcp-js
- Category Hub: https://agentbreakwatch.vercel.app/c/database-backend (Database, SQL & Vector DB MCP Servers Stability Index)
- Package Name: `@lovable.dev/mcp-js`
- Registry: NPM (https://www.npmjs.com/package/@lovable.dev/mcp-js)
- GitHub Repository: https://github.com/lovablelabs/lovable
- Vendor: Lovable.dev
- Latest Live Version: v3.3.0
- Published Date: 2026-10-23T12:54:29.824Z
- 90-Day Release Count: 32
- Direct Dependencies: 7
- License: MIT
- Stability Score: 78/100 (Grade B)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y @lovable.dev/mcp-js@3.3.0`
- Watched Symbols / MCP Tools: lovable-mcp-check, lovable-mcp-extract-manifest, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
Built on MCP SDK (1.28.0); recent release v3.3.0 (up from v3.2.2) updates Database & Backend MCP tool schemas and transport handling (32 releases in last 90d). Pin exact version v3.3.0 in .mcp.json to avoid silent parameter drift.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
"lovable-dev-mcp-js": {
  "command": "npx",
  "args": ["-y", "@lovable.dev/mcp-js@latest"]
}
```

## Migration Diff: After (Verified v3.3.0 Pattern)
```
"lovable-dev-mcp-js": {
  "command": "npx",
  "args": ["-y", "@lovable.dev/mcp-js@3.3.0"]
}
```

## Recent Verified Releases
- v3.3.0 (published 2026-10-23) [LATEST]
- v3.2.2 (published 2026-10-22)
- v3.2.1 (published 2026-10-22)
- v3.2.0 (published 2026-10-22)
- v3.1.1 (published 2026-10-17)
- v3.1.0 (published 2026-10-15)