M

MCP Migration Check

Deterministic MCP 2026-07-28 migration checker with an agent skill, CLI, GitHub

The Model Context Protocol revision dated 2026-07-28 is the largest breaking change in the protocol's history: it makes the transport stateless, formalizes OAuth 2.1 for remote servers, and deprecates several capabilities. Migrating is a refactor, not a version bump — and a large share of the thousands of public servers aren't actively maintained. mcp-migration-check is a small, deterministic readiness checker. It points at a running MCP endpoint (or scans a repo) and reports, with a letter grade and per-finding fixes, exactly what breaks. No LLM, no API key, nothing stored. It ships as four surfaces over one core: Surface Use it to… Web demo paste a URL, get a graded report — nothing to install CLI npx mcp-migration-check <url> — one command, no install GitHub Action keep a server from regressing, with a grade on every PR Skill hand an agent the diagnosis and the migration procedure The split is deliberate. The demo and the CLI see a server from the outside and answer "am I broken?". The Action asks that question again on every commit. The skill sees the code and answers "fix it" — which is the part that actually takes a week.

alpayc/mcp-migration-check · v0.1.0 · Development & Workflow

AlpayCOwner verifiedcaution
InstallSource
73Follow0

Trust Score

73

Security

64

Surfaces

1

v0.6.0 Live launch

Deterministic MCP 2026-07-28 migration checker with an agent skill, CLI, GitHub

Launched
Sep 25, 2026
Pricing
free
Availability
available

What is MCP Migration Check?

MCP Migration Check is a published development & workflow plugin for AI coding agents in the codex ecosystem, developed by AlpayC and distributed through the HOL AI plugin registry. Deterministic MCP 2026-07-28 migration checker with an agent skill, CLI, GitHub Action, and hosted web probe powered by one rule engine

Canonical slug
alpayc/mcp-migration-check
Version
v0.1.0 · updated Sep 26, 2026

Trust & Reputation

HOL Trust Score
73

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
100pts
MCP Posture
100pts
Plugin Security
64pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
caution
Digest verified
Yes
1 bundled skill — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
73

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
100pts
MCP Posture
100pts
Plugin Security
64pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/AlpayC/mcp-migration-check
Source commit
0649e433bf64…
Publisher verified
No
Owner verified
@AlpayC

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

Verified badge detected

This listing scores +2% trust because the HOL verified badge is present in the source repository README.

Security Posture

caution
Safety label
64
Security score
0
High findings
Provider
registry-broker-fallback
Grade
D · caution
Version
Unknown
cisco-skill-scanner: unknown

Findings

mediumpublishabilitypublishability.link.missing.websiteURL

websiteURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

MCP Migration Check — Frequently asked questions

What is MCP Migration Check?
MCP Migration Check is an AI plugin in the HOL registry. The Model Context Protocol revision dated 2026-07-28 is the largest breaking change in the protocol's history: it makes the transport stateless, formalizes OAuth 2.1 for remote servers, and deprecates several capabilities. Migrating is a refactor, not a version…
How do I install MCP Migration Check?
Install MCP Migration Check in your harness: Codex — codex plugin marketplace add AlpayC/mcp-migration-check; MCP — git clone https://github.com/AlpayC/mcp-migration-check; Any agent — npx skills add AlpayC/mcp-migration-check. Full step-by-step guidance is on the HOL plugin page.
How do I install MCP Migration Check in Codex?
To install MCP Migration Check in Codex, start with codex plugin marketplace add AlpayC/mcp-migration-check. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install MCP Migration Check in MCP?
To install MCP Migration Check in MCP, start with git clone https://github.com/AlpayC/mcp-migration-check. The complete step-by-step install guide for MCP is on the HOL plugin page.
Is MCP Migration Check free?
MCP Migration Check is listed as free on HOL.
Who publishes MCP Migration Check?
MCP Migration Check is published by AlpayC and listed on HOL.
Is MCP Migration Check available now?
MCP Migration Check is currently available according to its latest public launch.

Install Guidance

Install in Codex

Install through the Codex CLI plugin marketplace.

Codex plugin docs
  1. 1

    Register the marketplace

    Run in any terminal. Codex reads the marketplace entry from .agents/plugins/marketplace.json (or the legacy .claude-plugin path) in the repository. If the repository ships none, add the generated entry from the Advanced section below first.

    shell
  2. 2

    Install from the Plugins browser

    Open Codex, open the Plugins browser, choose the mcp-migration-check marketplace, and install mcp-migration-check.

  3. 3

    Verify the marketplace registration

    shell
Screenshot
1 / 1

Screenshot

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Plugin Manifest

{
  "name": "mcp-migration-check",
  "version": "0.1.0",
  "description": "Deterministic MCP 2026-07-28 migration checker with an agent skill, CLI, GitHub Action, and hosted web probe powered by one rule engine",
  "repository": "https://github.com/AlpayC/mcp-migration-check",
  "homepage": "https://github.com/AlpayC/mcp-migration-check",
  "interface": {
    "displayName": "MCP Migration Check",
    "developerName": "AlpayC",
    "category": "Development & Workflow"
  },
  "skills": "./",
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/AlpayC/mcp-migration-check
Marketplace path
Unknown
Source path
.
Install policy
Unspecified

Skills

1 SKILL.md file ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli

  • mcp-migration

    skill/mcp-migration/SKILL.md

    Diagnose and carry out the migration of an MCP server to the 2026-07-28 specification — the revision that made the transport stateless, formalized OAuth 2.1, and deprecated the logging, sampling, and roots capabilities. Use this skill whenever someone mentions migrating, upgrading, or checking an MCP server against the 2026-07-28 spec; asks whether their MCP server still works, is "ready", or will break; mentions the stateless transport model, Mcp-Session-Id, or OAuth 2.1 for MCP; or is debugging an MCP server that stopped working after a spec or SDK bump. Also use it when someone asks you to review or audit MCP server code for compatibility, even if they don't name the spec date.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.codex-plugin/plugin.json

plugin-manifest

470 bytes

fb458d4241b2ce9f…

AGENTS.md

file

3,403 bytes

0ac88adaa032a119…

package-lock.json

file

274,887 bytes

47d7ae4cf85c0003…

package.json

file

1,147 bytes

e7b95844e5fc615c…

README.md

file

27,337 bytes

0ea326230255afde…

README.md

file

27,337 bytes

0ea326230255afde…

SECURITY.md

file

2,458 bytes

701f82fc0a03e5da…

skill/mcp-migration/references/remediation.md

file

28,533 bytes

367e1190b5ff4117…

skill/mcp-migration/scripts/mcpcheck.mjs

file

70,977 bytes

cbada5d27bc52918…

skill/mcp-migration/SKILL.md

skill

10,653 bytes

5e95efa95fc2d249…

History, reviews, and alternatives

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Makers can publish releases and security milestones after claiming the plugin.