Agent skill

Flutter MCP Toolkit Custom Tools

A skill your agent uses when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcptoolkit dynamic registry — AgentCallEntry, addEntries).

MITAuto-check passedMobile

Install Flutter MCP Toolkit Custom Tools

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .claude/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .claude/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .agents/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .agents/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .cursor/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .cursor/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Arenukvern/mcp_flutter.git --path plugin/skills/flutter-mcp-toolkit-custom-tools

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .gemini/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .gemini/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .github/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .github/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Arenukvern/mcp_flutter flutter-mcp-toolkit-custom-tools --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Arenukvern/mcp_flutter.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugin/skills/flutter-mcp-toolkit-custom-tools .opencode/skills/flutter-mcp-toolkit-custom-tools && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "flutter-mcp-toolkit-custom-tools" agent skill from https://github.com/Arenukvern/mcp_flutter/tree/main/plugin/skills/flutter-mcp-toolkit-custom-tools into .opencode/skills/flutter-mcp-toolkit-custom-tools/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "flutter-mcp-toolkit-custom-tools", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: flutter-mcp-toolkit-custom-tools
GitHub stars: 387
Token cost: ~1.9k tokens
SKILL.md length: 545 words
Files: 1
Skills in repo: 23
Repo updated: Oct 3, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

A skill your agent uses when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcptoolkit dynamic registry — AgentCallEntry, addEntries).

Works in 3 steps: fmt_list_client_tools_and_resources —… → fmt_client_tool — invoke a dynamic tool… → fmt_client_resource — fetch a registered…
Tasks that involve MCP servers
SKILL.md covers Pick the right primitive, Handler signatures, Custom resources and Schema rules (tools), plus 6 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Flutter MCP Toolkit Custom Tools is an agent skill from Arenukvern/mcp_flutter. Use this skill when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcptoolkit dynamic registry — AgentCallEntry, addEntries). Covers tool vs resource vs evaluate-expression, Map-based handlers, schema strictness, discovery via fmtlistclienttoolsandresources, fmtclienttool, fmtclientresource, and lifecycle pitfalls.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering MCP servers and Cross-platform mobile apps. It works with Model Context Protocol and Flutter. The repository describes itself as: 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… The licence is MIT.

When your agent uses it

Tasks that involve MCP servers
Tasks that involve Cross-platform mobile apps

Example prompts

“/flutter-mcp-toolkit-custom-tools”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

fmt_list_client_tools_and_resources — enumerate app-registered tools and resources.
fmt_client_tool — invoke a dynamic tool by name with JSON args.
fmt_client_resource — fetch a registered resource URI from the listing.

What it can do on your machine

Read from SKILL.md and the folder at commit 62f3ee1. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are dart).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Flutter MCP Toolkit Custom Tools loads about 1.9k tokens when it runs. Until then it costs about 106 tokens; SKILL.md has 545 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~106
When it runs · the whole SKILL.md, loaded when a task matches: ~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Arenukvern/mcp_flutter at commit 62f3ee1, republished under its MIT licence (© Arenukvern). 545 words, ~1,873 tokens.

Download SKILL.mdSave it as .claude/skills/flutter-mcp-toolkit-custom-tools/SKILL.md (or your agent's skills folder).

name: flutter-mcp-toolkit-custom-tools
description: 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, Map-based handlers, schema strictness, discovery via fmt_list_client_tools_and_resources, fmt_client_tool, fmt_client_resource, and lifecycle pitfalls.

<!-- @FMT_MODE_PRELUDE -->

Custom MCP Toolkit Tools & Resources (Dynamic Registry)

Use this when bundled MCP tools (screenshot, semantic snapshot, tap, …) are not enough and you need app-specific read surfaces or actions — e.g. cart totals, feature flags, curated debug snapshots of internal state. Entries are registered in the Flutter process and exposed to the agent through the dynamic registry.

Migration: The legacy call-entry type was removed in intentcall Phase 6b. Use AgentCallEntry or mcpToolkitTool / mcpToolkitResource. See flutter-mcp-toolkit-intentcall-migration.

Boundary: Change app discovery, Flutter VM-service extensions, or app-owned debug surfaces here. Change canonical registry/session semantics, schema policy, platform projection, or publish behavior in the upstream IntentCall repository.

Pick the right primitive

Need	Use
One-off read of a simple value	`fmt_evaluate_dart_expression` (no app code change).
Stable read-only payload (diagnostics, JSON snapshot, “current route”)	`AgentCallEntry.resource` + `fmt_client_resource`. Prefer resources when the contract is “GET-like” and idempotent.
Parameterized or mutating action, or reusable named operation	`AgentCallEntry.tool` + `fmt_client_tool`.

Handler signatures

Native `AgentCallEntry` (preferred for new code)

Handlers receive AgentArguments (Map<String, Object?>) and return AgentResult:

dart

import 'package:mcp_toolkit/mcp_toolkit.dart';

final tool = AgentCallEntry.tool(
  namespace: 'app',
  name: 'cart_get_snapshot',
  description: 'Return current cart total and items for a user.',
  inputSchema: const {
    'type': 'object',
    'additionalProperties': false,
    'properties': {
      'userId': {'type': 'string'},
    },
    'required': ['userId'],
  },
  handler: (final args) async {
    final userId = args['userId']?.toString() ?? '';
    final cart = CartRepository.instance.forUser(userId);
    return AgentResult.success(
      message: 'ok',
      data: {
        'total': cart.total,
        'items': cart.items.map((final i) => i.toJson()).toList(),
      },
    );
  },
);

await MCPToolkitBinding.instance.addEntries(entries: {tool});

Legacy `MCPToolDefinition` + `MCPCallResult` (bridge)

Built-in toolkits still use mcpToolkitTool / mcpToolkitResource to adapt Map<String, String> service-extension handlers:

dart

final tool = mcpToolkitTool(
  namespace: 'app',
  handler: (final request) async {
    final userId = request['userId'] ?? '';
    return MCPCallResult(
      message: 'ok',
      parameters: {'userId': userId},
    );
  },
  definition: MCPToolDefinition(
    name: 'cart_get_snapshot',
    description: 'Return current cart total and items for a user.',
    inputSchema: ObjectSchema(
      properties: {
        'userId': StringSchema(),
      },
      required: ['userId'],
    ),
  ),
);

Tool arguments on the wire are strings keyed by schema property names — parse with int.tryParse, jsonDecode, etc.
Do not use request.arguments on the app side.

Prefer MCPToolkitBinding.instance.addEntries(entries: { ... }) before bootstrapFlutter(runApp: ...) so tools/resources register in one place with zone/error setup.

Custom resources

dart

final resource = AgentCallEntry.resource(
  namespace: 'app',
  name: 'app_cart_digest',
  description: 'Compact cart summary for agents (read-only).',
  mimeType: 'application/json',
  handler: (final args) async => AgentResult.success(
    message: 'Cart digest',
    data: {
      'itemCount': CartRepository.instance.visibleCount,
      'currency': CartRepository.instance.currencyCode,
    },
  ),
);

Or via bridge:

dart

mcpToolkitResource(
  namespace: 'app',
  definition: MCPResourceDefinition(
    name: 'app_cart_digest',
    description: 'Compact cart summary for agents (read-only).',
    mimeType: 'application/json',
  ),
  handler: (final request) async => MCPCallResult(
    message: 'Cart digest',
    parameters: {'itemCount': 3},
  ),
),

name must be snake_case. Published resource URIs follow visual://localhost/... conventions; agents use fmt_client_resource and listings from fmt_list_client_tools_and_resources.

Schema rules (tools)

The MCP server enforces strict JSON Schema:

Prefer additionalProperties: false unless you intentionally accept arbitrary keys.
Mark required for anything the handler reads unconditionally.
AgentResult.data / MCPCallResult.parameters must be JSON-serializable.

Discovery from the agent side

fmt_list_client_tools_and_resources — enumerate app-registered tools and resources.
fmt_client_tool — invoke a dynamic tool by name with JSON args.
fmt_client_resource — fetch a registered resource URI from the listing.

If something should appear but does not: confirm addEntries completed (await), then hot restart.

Show full SKILL.md (217 more words)Show less

Lifecycle gotchas

Hot reload + addEntries from widget code → duplicate registrations. Register once in main() / bootstrap.
Debug mode only — release builds do not expose VM service extensions.
Naming: the app uses a flat global namespace. Prefix tools/resources (cart_, flags_, nav_). If a built-in entry already uses a name, the custom entry is skipped without warning; the built-in handles the call and the custom handler does not run.
Naming the running instance is MCPToolkitBinding.instance.setAppIdentity(label: 'Fleet app · staging'), called again whenever the name changes (sign-in, workspace switch). Discovery reads that label, and a tool of your own called app_identity is one of the collisions above.

When the agent authors surfaces for the user’s app

Ensure mcp_toolkit is in pubspec.yaml.
Add lib/mcp_tools/<domain>_surfaces.dart returning Set<AgentCallEntry> or calling addEntries once.
Wire from addEntries(...) before bootstrapFlutter(...) — never from StatefulWidget lifecycle.
Tight schemas; hot restart; then fmt_list_client_tools_and_resources before first client invoke.

Safety and scope

Treat handlers as powerful debug hooks: avoid secrets, unchecked IO.
Keep handlers thin: delegate to existing app services.

Common traps

Mixing AgentArguments with Map<String, String> — pick one API (native vs mcpToolkitTool).
Missing await on addEntries → race before discovery.
inputSchema out of sync with the handler → agents trust the schema; update both.

flutter-mcp-toolkit-intentcall-migration — CLI migrator, breaking upgrade
flutter-mcp-toolkit-guide → inspect / control / debug skills
Repository ARCHITECTURE.md → “Dynamic Registry Architecture”

Files

Just SKILL.md in plugin/skills/flutter-mcp-toolkit-custom-tools of Arenukvern/mcp_flutter.

Open the folder on GitHubat commit 62f3ee1

Compare with similar skills

Flutter MCP Toolkit Custom Tools next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Flutter MCP Toolkit Custom Tools compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Flutter MCP Toolkit Custom Tools this skillArenukvern/mcp_flutter	387	—	~1.9k	Automated safety check: Pass	MIT	7 days ago
MCP Debuggerdebugmcp/mcp-debugger	173	—	~4.1k	Automated safety check: Pass	MIT	yesterday
Retrieving Developer Knowledgegoogle/skills	21k	—	~2k	Automated safety check: Pass	Apache-2.0	yesterday
MCP Dart Clientleehack/mcp_dart	116	—	~1.8k	Automated safety check: Pass	MIT	5 days ago
Appllama UsageAppllama/appllama-skills	2.5k	1 repos	~1.6k	Automated safety check: Pass	MIT	1 mo ago
Marionette Flutter Drive Appleancodepl/marionette_mcp	482	—	~11k	Automated safety check: Pass	Apache-2.0	5 days ago

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Works with

Questions about Flutter MCP Toolkit Custom Tools

What does Flutter MCP Toolkit Custom Tools do?

A skill your agent uses when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcptoolkit dynamic registry — AgentCallEntry, addEntries). Flutter MCP Toolkit Custom Tools is an agent skill from Arenukvern/mcp_flutter. Use this skill when the agent exposes app-specific surfaces by registering custom MCP tools and resources inside the Flutter app (mcptoolkit dynamic registry — AgentCallEntry, addEntries).

When should I use Flutter MCP Toolkit Custom Tools?

Flutter MCP Toolkit Custom Tools fits situations like: tasks that involve MCP servers; tasks that involve Cross-platform mobile apps.

How do I install Flutter MCP Toolkit Custom Tools in Claude Code?

Run `npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a claude-code`. Or copy the skill folder (plugin/skills/flutter-mcp-toolkit-custom-tools in Arenukvern/mcp_flutter) into .claude/skills/flutter-mcp-toolkit-custom-tools in your project. Claude Code loads it when a task matches its description.

How do I install Flutter MCP Toolkit Custom Tools in Codex?

Run `npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a codex`. Or copy the skill folder (plugin/skills/flutter-mcp-toolkit-custom-tools in Arenukvern/mcp_flutter) into .agents/skills/flutter-mcp-toolkit-custom-tools in your project. Codex loads it when a task matches its description.

Can I use Flutter MCP Toolkit Custom Tools in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-custom-tools -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/flutter-mcp-toolkit-custom-tools, .gemini/skills/flutter-mcp-toolkit-custom-tools, .github/skills/flutter-mcp-toolkit-custom-tools and .opencode/skills/flutter-mcp-toolkit-custom-tools in your project.

What does Flutter MCP Toolkit Custom Tools need to run?

SKILL.md names no scripts, command-line tools or credentials: Flutter MCP Toolkit Custom Tools is instructions for the agent only.

Does Flutter MCP Toolkit Custom Tools access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Flutter MCP Toolkit Custom Tools safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Flutter MCP Toolkit Custom Tools use?

Flutter MCP Toolkit Custom Tools is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Flutter MCP Toolkit Custom Tools use?

About 1.9k tokens (SKILL.md is roughly 7.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Flutter MCP Toolkit Custom Tools?

Skills that share tags, products or a category with Flutter MCP Toolkit Custom Tools: MCP Debugger (debugmcp/mcp-debugger, 173 stars), Retrieving Developer Knowledge (google/skills, 21k stars), MCP Dart Client (leehack/mcp_dart, 116 stars) and Appllama Usage (Appllama/appllama-skills, 2.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Flutter MCP Toolkit Custom Tools?

Arenukvern (a GitHub user) maintains it in Arenukvern/mcp_flutter, which has 387 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 3, 2026.

Source: Arenukvern/mcp_flutter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Flutter MCP Toolkit Custom Tools

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Custom MCP Toolkit Tools & Resources (Dynamic Registry)

Pick the right primitive

Handler signatures

Native AgentCallEntry (preferred for new code)

Legacy MCPToolDefinition + MCPCallResult (bridge)

Custom resources

Schema rules (tools)

Discovery from the agent side

Lifecycle gotchas

When the agent authors surfaces for the user’s app

Safety and scope

Common traps

Related

Files

Compare with similar skills

Similar skills

More from Arenukvern/mcp_flutter

Related

Questions about Flutter MCP Toolkit Custom Tools

Native `AgentCallEntry` (preferred for new code)

Legacy `MCPToolDefinition` + `MCPCallResult` (bridge)