Borrowing it
Nothing to install: this file belongs to baijum/ukulele-companion. 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/baijum/ukulele-companion/main/AGENTS.mdgit clone --depth 1 https://github.com/baijum/ukulele-companionWrote 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/baijum/ukulele-companion/agents-md)<a href="https://agentmods.dev/instructions/baijum/ukulele-companion/agents-md"><img src="https://agentmods.dev/badge/instructions/baijum/ukulele-companion/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/baijum/ukulele-companion/agents-md"><img src="https://agentmods.dev/badge/instructions/baijum/ukulele-companion/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 | $0.03296 | $0.03296 |
| Opus 5 | $0.01648 | $0.01648 |
| Sonnet 5 | $0.00659 | $0.00659 |
| Haiku 4.5 | $0.00330 | $0.00330 |
Grade A, and why
ukulele-companion 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 6d 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 — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md -- AI Agent Instructions for Ukulele Companion
Mandatory instructions for AI coding agents (Cursor, Copilot, Codex, etc.) working on this codebase.
See also: CODEBASE_AREAS_SUBAREAS.md — exhaustive table of feature areas (Play/Create/Practice/Reference + all NavSections), packages, UI/Views, domain logic, and cross-cutting code.
Session context: MEMORY.md — persistent agent memory (read at session start, append when you learn something non-obvious). docs/known-failures.md — recurring agent mistakes to avoid.
Harness docs: docs/architecture-map.md — screen/ViewModel/navigation mapping for both platforms. docs/testing-guide.md — which test pattern for which component. docs/check-registry.md — every automated check, its command, and runtime.
Detailed coding rules live in .cursor/rules/*.mdc — the canonical source. They auto-attach in Cursor; Claude Code picks them up via directory-scoped CLAUDE.md pointer files (e.g. shared/src/commonMain/, app/src/main/.../ui/, iosApp/UkuleleCompanion/); other agents should open the relevant rule from the Coding Rules Reference table below. This document provides project-level context and constraints.
Project Overview
Ukulele Companion is a free, fully offline multiplatform app (Android + iOS) for learning and playing ukulele. A core user base includes blind and visually impaired musicians who rely on TalkBack (Android) and VoiceOver (iOS). Every code change must preserve accessibility. Breaking accessibility is treated as seriously as breaking functionality.
Hard constraints -- never violate these:
- No network dependencies -- every app feature must work with the radio off
- No analytics, tracking, or telemetry
- No ads or monetization code without prior discussion
- No third-party SDKs without prior discussion
- Never commit
keystore.properties, API keys, or secrets
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.
- 6d ago Changed · +7 tokens per session 4e9193298f79
- 10d ago First seen · 195 lines · 3,289 tokens per session scan A 0e2fff8f0719
ukulele-companion AGENTS.md is an instructions file published in the GitHub repository baijum/ukulele-companion (14 stars, last pushed 6d ago), licensed MIT. It adds 3,296 tokens to every session, about $0.0165 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).
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.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.