Tactual MCP

Name: Tactual MCP
Author: tactual-dev

@tactual-dev

リポジトリホームページ

Tactual MCP について

Screen-reader navigation cost analyzer — models the real effort to discover, reach, and operate interactive web content

#accessibility #screen-reader #testing #playwright #a11y

基本情報

カテゴリ

その他

ライセンス

Apache-2.0

ランタイム

node

トランスポート

stdio

公開者

tactual-dev

投稿者

Ben Matar

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "tactual": {
      "command": "npx",
      "args": [
        "tactual-mcp"
      ]
    }
  }
}

ツール

ツールは検出されませんでした

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is Tactual MCP?

Tactual MCP is a server for the Tactual screen-reader navigation cost analyzer. It measures how many keystrokes a screen-reader user needs to discover, reach, and operate every interactive target on a webpage, under AT profiles such as NVDA, JAWS, and VoiceOver. It is built for developers analyzing their own sites and staging environments, complementing conformance scanners like axe-core.

How to use Tactual MCP?

Install the tactual npm package (requires Node.js 20+). The MCP server runs as tactual-mcp and is included with the package. After installation, configure your MCP client to invoke the tactual-mcp command. Tools such as analyze-url, diff-results, transcript, and validate-url are available via the CLI and can be used through the MCP server.

Key features of Tactual MCP

Measures navigation cost (keystrokes) for screen-reader users
Supports AT profiles: NVDA, JAWS, VoiceOver
Explores hidden UI with keyboard probing (menus, dialogs, tabs)
Simulates screen-reader announcements and transcripts
Outputs JSON, Markdown, and SARIF formats
Diff analysis for before/after verification
Optional validation against virtual screen reader

Use cases of Tactual MCP

Triage accessibility navigation cost across a site or route
Verify code changes by comparing baseline and candidate analysis
Analyze specific interactive widgets (menus, dialogs, form errors)
Generate compact evidence (selectors, penalties, remediation candidates) for issues or PRs
Run in CI to catch regressions in screen-reader navigation cost

FAQ from Tactual MCP

How does Tactual differ from conformance checkers like axe-core?

Tactual measures navigation cost (keystrokes to reach and operate targets), whereas conformance tools check WCAG/ARIA rule violations. Tactual is intended as a second pass after markup is valid.

What are the runtime requirements?

Node.js 20 or later. Playwright and MCP SDK are bundled as runtime dependencies, so one-off npx commands work without separate Playwright installs.

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