Flutter Agent Plugins is a collection maintained by the Flutter team that extends coding agents with Flutter-specific skills, rules, MCP configuration, and bundled workflows. Flutter developers use it to help agents perform tasks such as testing and building widget previews. The catalogue entries are components of these agent plugins.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/flutter/agent-pluginsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/flutter/agent-plugins/flutter-hot-reload)<a href="https://agentmods.dev/rules/flutter/agent-plugins/flutter-hot-reload"><img src="https://agentmods.dev/badge/rules/flutter/agent-plugins/flutter-hot-reload/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/rules/flutter/agent-plugins/flutter-hot-reload"><img src="https://agentmods.dev/badge/rules/flutter/agent-plugins/flutter-hot-reload.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00287 |
| Opus 5.5 | $0.00000 | $0.00115 |
| Sonnet 5.5 | $0.00000 | $0.00057 |
| Haiku 4.5 | $0.00000 | $0.00029 |
Grade A, and why
flutter-hot-reload scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Proactive Flutter Hot Reload Rule
Whenever you edit or modify any .dart file under lib/ in this project:
-
When to Skip:
- Files Outside
lib/: Only trigger hot reload or hot restart for edits underlib/. Do not trigger when modifying files in other directories (e.g.,test/**,integration_test/**,benchmark/**,test_driver/**orexample/**). - Comments & Documentation: Do not trigger hot reload or hot restart when changes only affect comments, docstrings, or whitespace.
- Files Outside
-
Discover & Connect:
- Discover active running application instances using the
dtdMCP tool (orlist_running_apps/vm_service) from the Dart MCP server.
- Discover active running application instances using the
-
Trigger Hot Reload / Hot Restart:
- Execute the
hot_reloadMCP tool immediately after making changes to UI widgets (includingbuildmethods of stateful widgets) or simple methods. - Execute the
hot_restartMCP tool if fundamental logic, state initialization (e.g.,initState), global/static state, ormain()was modified.
- Execute the
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 21 lines · 0 tokens per session scan A 7481f83e07bf
flutter-hot-reload is a cursor rule published in the GitHub repository flutter/agent-plugins (3,111 stars, last pushed today), licensed BSD-3-Clause. It costs nothing until one of its globs matches a file; then it loads 287 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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