@readystack/mcp-2026-migration-lint

MCP 2026 Migration Lint

The 2026-07-28 MCP revision removed the initialize handshake, sessions, ping and 4 more RPCs. 27 rules find them in your mcp.json and server code, with the replacement on each line.

Install

npx @readystack/mcp-2026-migration-lint file

Node 18+. The same 27 rules as the VS Code extension, from a terminal or CI.

Free

• All 27 rules on the file you have open, or on just the lines you select, with the line number and the replacement for each - no key, no account, offline.
• --rules lists every rule

With a licence ($29 once)

• Scale, not a better answer: every mcp.json and server file in the whole repository in one pass, the findings exported as CSV/JSON/HTML, and CI output that fails the build.

@readystack/mcp-2026-migration-lint --dir ./templates --report html --out report.html

Freelance senior software engineers publish an average of $101/hour (contractrates.fyi, 2026, 584 submissions).

Use from an AI agent (MCP)

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

{ "mcpServers": { "mcp-2026-migration-lint": { "command": "npx", "args": ["-y", "@readystack/mcp-2026-migration-lint", "--mcp"] } } }

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

Use in CI

- name: MCP 2026 Migration Lint
  run: npx -y @readystack/mcp-2026-migration-lint --dir . --ci

(container: docker run --rm -v "$PWD:/work" getreadystack/mcp-2026-migration-lint --dir /work --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