MySQL 8.4 Upgrade Lint (RDS MySQL 8.0)

Runs the same checker as our npm package on a Node.js runtime that pip installs for you (nodejs-wheel-binaries) - no system Node.js needed. Your files are checked locally.

MySQL upgrade 8.0 → 8.4: finds the SQL, my.cnf and parameter-group lines that MySQL 8.4 removed, with the fix on each line

Install

mysql84-upgrade-blocker-lint file

Node 18+. The same 34 rules as the VS Code extension, from a terminal or CI.

Free

• Lint the open .sql, .cnf, .ini or .tf file against 34 MySQL 8.4 removals, with the line number and the fix on every finding, in VS Code or the web page, no key.
• --rules lists every rule

With a licence ($29 once)

• Scan every migration, my.cnf and parameter group in the workspace at once and export one upgrade-blocker report (Markdown + CSV) to attach to the upgrade ticket.

mysql84-upgrade-blocker-lint --dir ./templates --report html --out report.html

AWS has billed RDS for MySQL 8.0 Extended Support since 1 August 2026 at $0.100 per vCPU-hour (US East Ohio): $7,008 a year for one 8-vCPU instance running 8,760 hours.

Use from an AI agent (MCP)

Claude Code · Cursor · Windsurf · any MCP client - add to your MCP config:

{ "mcpServers": { "mysql84-upgrade-blocker-lint": { "command": "mysql84-upgrade-blocker-lint", "args": ["--mcp"] } } }

Tools: check_text and check_file (free) · check_dir (licence). The agent gets every finding with the line number.

Use in CI

- name: MySQL 8.4 Upgrade Lint (RDS MySQL 8.0)
  run: pip install rulestamp-mysql84-upgrade-blocker-lint && mysql84-upgrade-blocker-lint --dir . --ci

The folder sweep, reports and CI mode need one licence — one payment, no subscription. Set READYSTACK_LICENSE=<key> or run --license <key> once.

Get a licence

Install (PyPI)

pip install rulestamp-mysql84-upgrade-blocker-lint
mysql84-upgrade-blocker-lint --help