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.
npx agentmods add instructions/verygoodopensource/vgv-ai-flutter-plugin/claude-mdgit clone --depth 1 https://github.com/VeryGoodOpenSource/vgv-ai-flutter-pluginWrote 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/instructions/verygoodopensource/vgv-ai-flutter-plugin/claude-md)<a href="https://agentmods.dev/instructions/verygoodopensource/vgv-ai-flutter-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/verygoodopensource/vgv-ai-flutter-plugin/claude-md.svg" alt="Measured on agentmods" 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 | $0.00576 | $0.00576 |
| Opus 5 | $0.00288 | $0.00288 |
| Sonnet 5 | $0.00115 | $0.00115 |
| Haiku 4.5 | $0.00058 | $0.00058 |
Grade A, and why
vgv-ai-flutter-plugin CLAUDE.md 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 today.
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 — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@AGENTS.md
Hooks
The hooks/ directory contains SessionStart, PreToolUse, and PostToolUse hooks defined in hooks.json.
SessionStart Hooks
These run when a session begins:
warn-missing-mcp.sh— checks if Very Good CLI is installed and >= 1.3.0; outputs a warning to Claude's context if missing or outdated (non-blocking)
PreToolUse Hooks
These run before a tool call is executed:
mcp__.*very-good-cli__.*matcher →check-vgv-cli.sh— auto-approves the Very Good CLI MCP tool call by returning a PreToolUseallowdecision, so it is always permitted regardless of run mode (interactive, headless, orskipAutoPermissionPrompt) and never dead-ends when the tool isn't onpermissions.allow; denies with an install/upgrade message if the CLI is missing or < 1.3.0. The.*in the matcher covers both the baremcp__very-good-cli__*server (repo-root.mcp.json) and the plugin-namespacedmcp__plugin_<plugin>_very-good-cli__*form used when installed from a marketplaceBashmatcher →block-cli-workarounds.sh— prevents direct CLI bypass of VGV CLI commands through the Bash tool; exits 2 on failure (blocking)
The first two PreToolUse hooks are plugin-level (defined in hooks.json) and share common utilities
from vgv-cli-common.sh. The following hook is agent-scoped — it is declared in the
flutter-reviewer agent's frontmatter, not in hooks.json, so it only fires for that agent:
Bashmatcher →allow-readonly-git.sh— restricts theflutter-revieweragent's Bash togit diff/git statusonly; exits 2 on anything else, including compound-command bypass (blocking). Enforces the agent's read-only contract.
PostToolUse Hooks
These run after a tool call completes:
Edit|Writematcher →analyze.sh— runsdart analyzeon the modified.dartfile; exits 2 on failure (blocking — Claude must fix the issue)Edit|Writematcher →format.sh— runsdart formaton the modified.dartfile; always exits 0 (non-blocking)
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.
- today Changed · -191 lines · -2,229 tokens per session cab7ec9e37eb
- 4d ago First seen · 229 lines · 2,805 tokens per session scan A 9bbc44939619
vgv-ai-flutter-plugin CLAUDE.md is an instructions file published in the GitHub repository VeryGoodOpenSource/vgv-ai-flutter-plugin (160 stars, last pushed today), licensed MIT. It adds 576 tokens to every session, about $0.0029 per session on Opus 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 2026-08-30.
Other instructions, from other repositories
ios-swiftui-accessibility-techniques CLAUDE.md
Claude Code instructions for cvs-health/ios-swiftui-accessibility-techniques, covering project rules, copyright header (required), rules, swift files and markdown files.
mobile CLAUDE.md
Claude Code instructions for lichess-org/mobile, covering claude.md, project overview, development setup, initial setup and install dependencies.
dart-sdk-skills AGENTS.md
AGENTS.md instructions for RandalSchwartz/dart-sdk-skills, covering ai agent developer handbook (agents.md), 🎯 repository purpose, 🔄 runbook 1: updating for new dart sdk releases, 🔄 runbook 2: updating for new flutter framework releases and 📏 quality & style guidelines.
dart-expert-skills copilot-instructions.md
Instructions for Poorgramer-Zack/dart-expert-skills, covering flutter skills repository - copilot instructions, repository overview, architecture, directory structure and skill structure.
simpod CLAUDE.md
Instructions for cscoderr/simpod, covering claude.md, what this is, commands, tests (run inside the package directory) and native swift helper.
flutter-design-engineer AGENTS.md
Instructions for musabekisakov-imj/flutter-design-engineer, a project described as: Agent skills for product-aware, adaptive, accessible, and visually verified Flutter UI design engineering.