mcp-migration

A code checker and guided migration tool for MCP servers, which are programs that let AI applications use external tools and data. It checks code against the 2026-07-28 MCP specification and guides fixes.

In plain words
What is it for?
Use it to inspect and update MCP servers for stateless transport, OAuth 2.1, deprecated capabilities, and the TypeScript SDK v2 package rename.
Why use it?
It helps find changes needed for the newer MCP rules without relying on a manual code review. This reduces the risk of missing transport, authentication, deprecated-feature, or SDK updates.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add AlpayC/mcp-migration-check
agentmods
npx agentmods add plugins/alpayc/mcp-migration-check/skill
Clone the repo
git clone --depth 1 https://github.com/AlpayC/mcp-migration-check

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

mcp-migration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skill/.claude-plugin/plugin.json · 28 lines

What it actually says

{
  "name": "mcp-migration",
  "version": "0.5.2",
  "description": "Diagnose and carry out the migration of an MCP server to the 2026-07-28 specification. Runs a deterministic rule engine over the code, then walks the remediation per finding: stateless transport, OAuth 2.1, the deprecated capabilities, and the SDK v2 rename.",
  "author": {
    "name": "AlpayC",
    "url": "https://github.com/AlpayC"
  },
  "homepage": "https://mcp-migration-check.alpaycelik.workers.dev",
  "repository": "https://github.com/AlpayC/mcp-migration-check",
  "license": "MIT",
  "keywords": [
    "mcp",
    "model-context-protocol",
    "mcp-server",
    "migration",
    "linter",
    "audit",
    "static-analysis",
    "readiness",
    "oauth",
    "typescript",
    "python",
    "rust"
  ],
  "skills": "./"
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 28 lines scan A b89a8fa60b17

Subscribe to this mod's changes

mcp-migration is a plugin published in the GitHub repository AlpayC/mcp-migration-check (5 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.