MCP Flutter plugin for Grok Build

Name: MCP Flutter
Author: Arenukvern

Community Claude Code plugin, installs in GrokPluginDevelopment

MCP Toolkit for Flutter AI Agent Driven Development (MCP/CLI + custom client side tools) - via closed feedback loop (visual & semantic snapshot) and high client side customization adaptable for any Flutter app. Nowadays it is often called as agentic harness.

How to install MCP Flutter in Grok Build

1. Add this repo as a plugin marketplace in Grok Build (once per computer):

grok plugin marketplace add Arenukvern/mcp_flutter

2. Install the plugin:

grok plugin install flutter-mcp-toolkit@Arenukvern/mcp_flutter --trust

✓ Install-checked in Grok Buildchecked Oct 18, 2026

Review before you trust it. --trust lets this plugin's hooks, MCP servers and scripts run code on your computer. It's a community repo that neither xAI nor GrokStacks has reviewed, so read its code first.

Then start a new Grok session, or press r in /plugins, to load it.

Inside Grok Build: type /plugins, open the Marketplace tab, press a and add Arenukvern/mcp_flutter, then select flutter-mcp-toolkit and press i.

Command format: Grok Build's plugin guide

What we checked: on Oct 18, 2026 it installed with grok 1.0.62 and Grok found 16 skills, 1 subagent. That's an install check only: we haven't run it in a live Grok session.

What it contains

Skills (16)

flutter-mcp — Use this skill whenever inspecting, interacting with, or live-editing a running Flutter app via the Flutter MCP toolkit server (`mcpServers` key **`flutter-mcp-toolkit`**, or legacy **`flutter-inspector`**). Covers preflight, snapshot/tap/e
flutter-mcp-automation-chain — Use this skill when wiring automation for a Flutter app — choosing the right surface (interactive MCP `fmt_*` tools, CLI one-shots, programmatic `flutter_mcp_harness` Dart scenarios, the browser CDP tier, or an external build+lifecycle runn
flutter-mcp-boundary-audit — Generic contract/schema boundary audit across authoring, discovery, validation, and execute—detecting split-brain between listings and invoke paths, gateway divergence, and permissive placeholders. Use when changing tool registration, RPC/p
flutter-mcp-cli-runtime-validation — Run Flutter MCP runtime validation from CLI in two steps (launch app, then run validate-runtime), including toolkit-extension gating, screenshot/layout capture, app error collection, optional reload verification, and retry handling for tran
flutter-mcp-e2e-harness — Use this skill when writing or running repeatable E2E scenarios for Flutter apps as checked-in Dart with the `flutter_mcp_harness` package (`packages/harness`) — build/launch the app, attach to its VM service, drive widgets (snapshot/tap/en
flutter-mcp-toolkit-control — Drive a running Flutter app — tap, scroll, type, fill forms, hot-reload, navigate. Use when you need to interact with the UI.
flutter-mcp-toolkit-custom-tools — Use this skill when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcp_toolkit dynamic registry — AgentCallEntry, addEntries). Covers tool vs resource vs evaluate-expression, Ma
flutter-mcp-toolkit-debug — Diagnose problems in a running Flutter app — read logs, evaluate Dart expressions, interpret error envelopes. Use when something broke.
flutter-mcp-toolkit-dogfood-iterations — Runs and records showcase/flutter_test_app dogfood iterations (tool_quality_rubric, run_dogfood_eval.sh, dogfood_web_eval.yaml). Use when scoring MCP/intentcall quality, appending iteration N, comparing regressions, or CI static/weekly eval
flutter-mcp-toolkit-guide — Entry point for inspecting or driving a running Flutter app from your AI assistant — routes to the right task skill (inspect / control / debug / custom app surfaces) and runs preflight.
flutter-mcp-toolkit-inspect — Read state from a running Flutter app — semantic snapshot, view details, errors, screenshots, VM info. Use when you need to understand what the app is showing.
flutter-mcp-toolkit-intentcall-migration — Migrate Flutter app code from removed MCPCallEntry to AgentCallEntry after the hard cut. Use when upgrading mcp_toolkit, fixing compile errors after a major bump, or running flutter-mcp-toolkit migrate agent-entries.
flutter-mcp-toolkit-maintain-macos — Maintains showcase/flutter_test_app macOS showcase, native intentcall hooks (codegen, app_links invoke), and VM MCP validation. Use when editing macOS Runner, intentcall_codegen.sh, macOS dogfood, Screen Recording capture, or comparing macO
flutter-mcp-toolkit-maintain-web — Maintains showcase/flutter_test_app and intentcall web targets (Chrome, web codegen, WebMCP bootstrap, web-showcase, webmcp verify, Chrome DevTools MCP). Use when editing web/index.html, agent_manifest.json, intentcall_webmcp.generated.js,
flutter-mcp-toolkit-repo-maintainer — Maintain mcp_flutter releases, CHANGELOG, version pins, docs, and CI. Use when cutting a release, editing CHANGELOG.md, bumping VERSION, running release-please, sync-skills, check-contracts, or updating install/docs for npx skills and flutt
flutter-mcp-toolkit-setup — Verify the flutter-mcp-toolkit install, run doctor preflight, troubleshoot connection issues. Use when the toolkit isn't responding or first-time setup.

Subagents (1)

flutter-mcp-toolkit:flutter-mcp-toolkit-runtime — Use this agent for Flutter live-app inspection and live-edit workflows via the Flutter MCP toolkit server (MCP registry key `flutter-mcp-toolkit`, or legacy `flutter-inspector`). It handles preflight,

About this listing

MCP Flutter is a community plugin on GitHub by Arenukvern, written as a Claude Code plugin that Grok Build installs. We install-checked it in Grok; we haven't run it in a live session or reviewed its code. When we installed it, Grok found 16 skills, 1 subagent. Its license is MIT. We checked commit a58f120fe13e. It's one of 409 listings in the Development category on GrokStacks.

MCP Flutter FAQ

How do I install MCP Flutter in Grok Build?

Add the repo as a marketplace with grok plugin marketplace add Arenukvern/mcp_flutter, then run grok plugin install flutter-mcp-toolkit@Arenukvern/mcp_flutter --trust. Then start a new Grok session, or press r in /plugins, to load it.

Is MCP Flutter an official Grok Build plugin?

No. MCP Flutter is a community plugin on GitHub by Arenukvern, not in xAI's official Grok Build marketplace. We checked that it installs and what Grok loads from it, but haven't run it in a live Grok session or reviewed its code.

What does MCP Flutter include?

According to what Grok loaded in our install check, MCP Flutter includes 16 skills, 1 subagent: flutter-mcp, flutter-mcp-automation-chain, flutter-mcp-boundary-audit, flutter-mcp-cli-runtime-validation, flutter-mcp-e2e-harness, flutter-mcp-toolkit-control….

Details

Type: Plugin
Category: Development
Source: Community Claude Code plugin, installs in Grok
License: MIT
Author: Arenukvern
Keywords: ai, cli-tools, dart, dynamic-tools, flutter, harness, harness-engineering, harness-framework, mcp, mcp-client, mcp-server, mcp-toolkit
Source repo: https://github.com/Arenukvern/mcp_flutter
Checked commit: a58f120fe13e
Homepage: https://docs.page/arenukvern/mcp_flutter
Checked by GrokStacks: Install-checked in Grok Build on Oct 18, 2026; not run in a live session

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MCP FlutterCommunity plugin for Grok Build · 16 skills, 1 subagentMCP Toolkit for Flutter AI Agent Driven Development (MCP/CLI + custom client side tools) - via closed feedback loop…View on GrokStacks →

<a href="https://grokstacks.com/p/mcp-flutter/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #2a2e3c;border-radius:12px;background:#0a0b0f;color:#e8eaf0;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#e8eaf0">MCP Flutter</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#9aa0b1">Community plugin for Grok Build · 16 skills, 1 subagent</span><span style="display:block;margin:0 0 10px;color:#c9cdd8">MCP Toolkit for Flutter AI Agent Driven Development (MCP/CLI + custom client side tools) - via closed feedback loop…</span><span style="font-size:12px;font-weight:600;color:#7c9cff">View on GrokStacks →</span></a>

Markdown summary

**[MCP Flutter on GrokStacks](https://grokstacks.com/p/mcp-flutter/)**: Community plugin for Grok Build with 16 skills, 1 subagent. Install: `grok plugin install flutter-mcp-toolkit@Arenukvern/mcp_flutter --trust` (after `grok plugin marketplace add Arenukvern/mcp_flutter`)

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