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Agent skill

Flutter Fix Layout Issues

by abdulmominsakib in abdulmominsakib/localmind

Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools.

MITAuto-check passedMobile

Install Flutter Fix Layout Issues

skills CLI
$ npx skills add abdulmominsakib/localmind --skill flutter-fix-layout-issues -a claude-code

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

GitHub CLI
$ gh skill install abdulmominsakib/localmind flutter-fix-layout-issues --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/abdulmominsakib/localmind.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/flutter-fix-layout-issues .claude/skills/flutter-fix-layout-issues && 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/

Facts

Skill name
flutter-fix-layout-issues
GitHub stars
265
Used in
1 other repo
Token cost
~1.3k tokens
SKILL.md length
442 words
Files
1
Skills in repo
13
Repo updated
First seen
Licence
MIT

At a glance

Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools.

  • Addressing RenderFlex overflowed
  • SKILL.md covers Contents, Constraint Violation Diagnostics, Layout Error Resolution Workflow and Examples
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Vertical viewport was given unbounded height

What it does

Flutter Fix Layout Issues is an agent skill from abdulmominsakib/localmind. Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools. Use when addressing "RenderFlex overflowed", "Vertical viewport was given unbounded height", or similar layout issues.

Its SKILL.md is about 1.3k 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 Cross-platform mobile apps. It works with Flutter and Dart. The repository describes itself as: A mobile application designed to provide a beautiful, fast, and privacy-respecting interface for on device LLM and local LLM servers and cloud providers. The licence is MIT.

When your agent uses it

  • Addressing RenderFlex overflowed
  • Vertical viewport was given unbounded height
  • Similar layout issues

Example prompts

  • “RenderFlex overflowed”
  • “Vertical viewport was given unbounded height”
  • “Use the flutter-fix-layout-issues skill to fix Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools”
  • “/flutter-fix-layout-issues”

What it can do on your machine

Read from SKILL.md and the folder at commit 9ff3f94. 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 Fix Layout Issues loads about 1.3k tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 442 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~60
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

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 abdulmominsakib/localmind at commit 9ff3f94, republished under its MIT licence (© abdulmominsakib). 442 words, ~1,332 tokens.

Download SKILL.mdSave it as .claude/skills/flutter-fix-layout-issues/SKILL.md (or your agent's skills folder).
name
flutter-fix-layout-issues
description
Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools. Use when addressing "RenderFlex overflowed", "Vertical viewport was given unbounded height", or similar layout issues.
metadata.model
models/gemini-3.1-pro-preview
metadata.last_modified
Tue, 21 Apr 2026 19:45:59 GMT

Resolving Flutter Layout Errors

Contents

Constraint Violation Diagnostics

Flutter layout operates on a strict rule: Constraints go down. Sizes go up. Parent sets position. Layout errors occur when this negotiation fails, typically due to unbounded constraints or unconstrained children.

Diagnose layout failures using the following error signatures:

  • "Vertical viewport was given unbounded height": Triggered when a scrollable widget (ListView, GridView) is placed inside an unconstrained vertical parent (Column). The parent provides infinite height, and the child attempts to expand infinitely.
  • "An InputDecorator...cannot have an unbounded width": Triggered when a TextField or TextFormField is placed inside an unconstrained horizontal parent (Row). The text field attempts to determine its width based on infinite available space.
  • "RenderFlex overflowed": Triggered when a child of a Row or Column requests a size larger than the parent's allocated constraints. Visually indicated by yellow and black warning stripes.
  • "Incorrect use of ParentData widget": Triggered when a ParentDataWidget is not a direct descendant of its required ancestor. (e.g., Expanded outside a Flex, Positioned outside a Stack).
  • "RenderBox was not laid out": A cascading side-effect error. Ignore this and look further up the stack trace for the primary constraint violation (usually an unbounded height/width error).

Layout Error Resolution Workflow

Copy and use this checklist to systematically resolve layout constraint violations.

Show full SKILL.md (223 more words)Show less
Task Progress
  • Run the application in debug mode to capture the exact layout exception in the console.
  • Identify the primary error message (ignore cascading "RenderBox was not laid out" errors).
  • Apply the conditional fix based on the specific error type:
    • If "Vertical viewport was given unbounded height": Wrap the scrollable child (ListView, GridView) in an Expanded widget to consume remaining space, or wrap it in a SizedBox to provide an absolute height constraint.
    • If "An InputDecorator...cannot have an unbounded width": Wrap the TextField or TextFormField in an Expanded or Flexible widget.
    • If "RenderFlex overflowed": Constrain the overflowing child by wrapping it in an Expanded widget (to force it to fit) or a Flexible widget (to allow it to be smaller than the allocated space).
    • If "Incorrect use of ParentData widget": Move the ParentDataWidget to be a direct child of its required parent. Ensure Expanded/Flexible are direct children of Row/Column/Flex. Ensure Positioned is a direct child of Stack.
  • Execute Flutter hot reload.
  • Run validator -> review errors -> fix: Inspect the UI to verify the red/grey error screen or yellow/black overflow stripes are resolved. If new layout errors appear, repeat the workflow.

Examples

Fixing Unbounded Height (ListView in Column)

Input (Error State):

dart
// Throws "Vertical viewport was given unbounded height"
Column(
  children: <Widget>[
    const Text('Header'),
    ListView(
      children: const <Widget>[
        ListTile(title: Text('Item 1')),
        ListTile(title: Text('Item 2')),
      ],
    ),
  ],
)

Output (Resolved State):

dart
// Wrap ListView in Expanded to constrain its height to the remaining Column space
Column(
  children: <Widget>[
    const Text('Header'),
    Expanded(
      child: ListView(
        children: const <Widget>[
          ListTile(title: Text('Item 1')),
          ListTile(title: Text('Item 2')),
        ],
      ),
    ),
  ],
)
Fixing Unbounded Width (TextField in Row)

Input (Error State):

dart
// Throws "An InputDecorator...cannot have an unbounded width"
Row(
  children: [
    const Icon(Icons.search),
    TextField(), 
  ],
)

Output (Resolved State):

dart
// Wrap TextField in Expanded to constrain its width to the remaining Row space
Row(
  children: [
    const Icon(Icons.search),
    Expanded(
      child: TextField(),
    ),
  ],
)
Fixing RenderFlex Overflow

Input (Error State):

dart
// Throws "A RenderFlex overflowed by X pixels on the right"
Row(
  children: [
    const Icon(Icons.info),
    const Text('This is a very long text string that will definitely overflow the available screen width and cause a RenderFlex error.'),
  ],
)

Output (Resolved State):

dart
// Wrap the Text widget in Expanded to force it to wrap within the available constraints
Row(
  children: [
    const Icon(Icons.info),
    Expanded(
      child: const Text('This is a very long text string that will definitely overflow the available screen width and cause a RenderFlex error.'),
    ),
  ],
)

© abdulmominsakib, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/flutter-fix-layout-issues of abdulmominsakib/localmind.

Open the folder on GitHubat commit 9ff3f94

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in abdulmominsakib/localmind, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Flutter Fix Layout Issues 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 Fix Layout Issues compared with similar skills
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Bump Dartflutter/flutter179k—~1.2kAutomated safety check: PassBSD-3-Clause
Run Devicelab With Ledflutter/flutter179k—~786Automated safety check: PassBSD-3-Clause

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Works with

Categories

Questions about Flutter Fix Layout Issues

What does Flutter Fix Layout Issues do?

Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools. Flutter Fix Layout Issues is an agent skill from abdulmominsakib/localmind. Fixes Flutter layout errors (overflows, unbounded constraints) using Dart and Flutter MCP tools.

When should I use Flutter Fix Layout Issues?

Flutter Fix Layout Issues fits situations like: addressing RenderFlex overflowed; vertical viewport was given unbounded height; similar layout issues.

How do I install Flutter Fix Layout Issues in Claude Code?

Run `npx skills add abdulmominsakib/localmind --skill flutter-fix-layout-issues -a claude-code`. Or copy the skill folder (.agents/skills/flutter-fix-layout-issues in abdulmominsakib/localmind) into .claude/skills/flutter-fix-layout-issues in your project. Claude Code loads it when a task matches its description.

How do I install Flutter Fix Layout Issues in Codex?

Run `npx skills add abdulmominsakib/localmind --skill flutter-fix-layout-issues -a codex`. Or copy the skill folder (.agents/skills/flutter-fix-layout-issues in abdulmominsakib/localmind) into .agents/skills/flutter-fix-layout-issues in your project. Codex loads it when a task matches its description.

Can I use Flutter Fix Layout Issues 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 abdulmominsakib/localmind --skill flutter-fix-layout-issues -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-fix-layout-issues, .gemini/skills/flutter-fix-layout-issues, .github/skills/flutter-fix-layout-issues and .opencode/skills/flutter-fix-layout-issues in your project.

What does Flutter Fix Layout Issues need to run?

SKILL.md names no scripts, command-line tools or credentials: Flutter Fix Layout Issues is instructions for the agent only.

Does Flutter Fix Layout Issues 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 Fix Layout Issues 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 Fix Layout Issues use?

Flutter Fix Layout Issues 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 Fix Layout Issues use?

About 1.3k tokens (SKILL.md is roughly 5.3k 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 Fix Layout Issues?

Skills that share tags, products or a category with Flutter Fix Layout Issues: Engine Whats New (flutter/flutter, 179k stars), Flutter Cherry Pick (flutter/flutter, 179k stars), Upgrade Browser (flutter/flutter, 179k stars) and Bump Dart (flutter/flutter, 179k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Flutter Fix Layout Issues?

abdulmominsakib (a GitHub user) maintains it in abdulmominsakib/localmind, which has 265 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 8, 2026.

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