Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/Arenukvern/mcp_flutternpx agentmods add skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macosWrote 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/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macos)<a href="https://agentmods.dev/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macos"><img src="https://agentmods.dev/badge/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macos/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/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macos"><img src="https://agentmods.dev/badge/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-maintain-macos.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00069 | $0.00724 |
| Opus 5.5 | $0.00028 | $0.00290 |
| Sonnet 5.5 | $0.00014 | $0.00145 |
| Haiku 4.5 | $0.00007 | $0.00072 |
Grade A, and why
flutter-mcp-toolkit-maintain-macos 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 25d 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.
How it starts
The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Maintain macOS (showcase + native intentcall)
Dogfood app: showcase/flutter_test_app. Platform doc: showcase/flutter_test_app/INTENTCALL_PLATFORM.md.
WebMCP on macOS
WebMCP modelContext is web-only. macOS dogfood proves VM extensions, dynamic registry, native invoke (intentcall:// via app_links), and visual capture (Screen Recording on host).
For WebMCP parity scoring, run web iteration separately (flutter-mcp-toolkit-maintain-web).
Launch showcase
make showcase-stop && make showcase
- Log:
.showcase/flutter_app.log - WS URI: grep
ws://127.0.0.1:…/wsfrom log (default VM port 8181)
grep -Eo 'ws://127\.0\.0\.1:[0-9]+/[A-Za-z0-9_=-]+/ws' .showcase/flutter_app.log | tail -1
Stop: make showcase-stop.
Codegen & hooks
dart run mcp_server_dart/bin/flutter_mcp_toolkit.dart codegen sync \
--platform web,android,ios,macos,linux,windows \
--project-dir showcase/flutter_test_app
dart run mcp_server_dart/bin/flutter_mcp_toolkit.dart init intentcall-platform \
--project-dir showcase/flutter_test_app --check
| Target | Role |
|---|---|
macos/intentcall_codegen.sh |
Xcode Run Script → codegen sync --platform macos |
macos/Runner.xcodeproj |
Run Script phase (see script comment if manual) |
lib/main.dart |
IntentCallInvokeLinkListener for intentcall://invoke/… |
Runtime validate
dart run mcp_server_dart/bin/flutter_mcp_toolkit.dart --save-images \
--output-dir .showcase/macos_iter validate-runtime \
--target "$MACOS_WS_URI" \
--flutter-device macos \
--timeout-ms 45000
Permissions (host process running CLI):
dart run mcp_server_dart/bin/flutter_mcp_toolkit.dart permissions status
dart run mcp_server_dart/bin/flutter_mcp_toolkit.dart permissions request
Dual-platform dogfood
bash tool/evals/run_dogfood_eval.sh \
--ws-uri "$WEB_WS_URI" \
--macos --macos-ws-uri "$MACOS_WS_URI"
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.
- 25d ago Changed · +1 lines · +1 tokens per session b6eca7593d44
- 1mo ago First seen · 80 lines · 68 tokens per session scan A 2165651f8296
flutter-mcp-toolkit-maintain-macos is a skill published in the GitHub repository Arenukvern/mcp_flutter (393 stars, last pushed 10d ago), licensed MIT. It adds 69 tokens to every session and 724 once invoked, about $0.0003 per session on Opus 5.5. 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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