Borrowing it
Nothing to install: this file belongs to RandalSchwartz/dart-sdk-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/RandalSchwartz/dart-sdk-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/RandalSchwartz/dart-sdk-skillsWrote 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/randalschwartz/dart-sdk-skills/agents-md)<a href="https://agentmods.dev/instructions/randalschwartz/dart-sdk-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/randalschwartz/dart-sdk-skills/agents-md/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/instructions/randalschwartz/dart-sdk-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/randalschwartz/dart-sdk-skills/agents-md.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 | $0.00736 | $0.00736 |
| Opus 5 | $0.00368 | $0.00368 |
| Sonnet 5 | $0.00147 | $0.00147 |
| Haiku 4.5 | $0.00074 | $0.00074 |
Grade A, and why
dart-sdk-skills AGENTS.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 10d 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AI Agent Developer Handbook (AGENTS.md)
Welcome, agent! This document defines the maintenance constitution, update runbooks, and quality standards for the dart-sdk-skills repository.
🎯 Repository Purpose
This repository provides authoritative, version-by-version agent skills for both the Dart SDK and the Flutter SDK:
skills/dart-sdk-changelog: Language features, core library APIs,minSdkverification, experimental flags, macros/augmentations, and legacy Dart modernization.skills/flutter-sdk-changelog: Widget deprecations, API replacements, Material 3 migrations, and legacy Flutter app rescue.
🔄 Runbook 1: Updating for New Dart SDK Releases
Whenever a new Dart SDK version (for example 3.15.0, 3.16.0, 4.0.0) is released:
- Source Upstream: Fetch
https://raw.githubusercontent.com/dart-lang/sdk/main/CHANGELOG.md. - Audit Experimental Flags:
- Run
dart compile exe --help -vto inspect all active--enable-experimentflags. - If any experimental flag graduated to stable in this release (for example
varianceormacros), move it from active experiments to the Graduated Stable Matrix inskills/dart-sdk-changelog/references/experimental-features-guide.md. - Add any newly introduced experimental flags to the active matrix with syntax examples.
- Run
- Author Version Guide: Create
skills/dart-sdk-changelog/references/whats-new-in-dart-X-Y.mdwith side-by-side Before/After code snippets. - Update Matrices: Update
skills/dart-sdk-changelog/SKILL.md,version-matrix.md, andREADME.md.
🔄 Runbook 2: Updating for New Flutter Framework Releases
Whenever a new Flutter version (for example 3.27.0, 3.30.0, 4.0.0) is released:
- Source Upstream: Inspect Flutter release notes and framework deprecations at
https://docs.flutter.dev/release/release-notes. - Update Version Matrix: Add the release row to
skills/flutter-sdk-changelog/references/flutter-to-dart-version-matrix.mdwith bundled Dart SDK and engine milestones. - Document Widget Deprecations: Add newly deprecated widgets/methods to
skills/flutter-sdk-changelog/references/widget-deprecations-and-replacements.md. - Update Fast Replacement Tables: Update
skills/flutter-sdk-changelog/SKILL.mdandREADME.md.
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.
- 10d ago First seen · 47 lines · 736 tokens per session scan A 5e39e465c31a
dart-sdk-skills AGENTS.md is an instructions file published in the GitHub repository RandalSchwartz/dart-sdk-skills (29 stars, last pushed 8d ago), licensed MIT. It adds 736 tokens to every session, about $0.0037 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
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.