Borrowing it
Nothing to install: this file belongs to Lykhoyda/rn-dev-agent. 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/Lykhoyda/rn-dev-agent/main/AGENTS.mdgit clone --depth 1 https://github.com/Lykhoyda/rn-dev-agentWrote 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/lykhoyda/rn-dev-agent/agents-md)<a href="https://agentmods.dev/instructions/lykhoyda/rn-dev-agent/agents-md"><img src="https://agentmods.dev/badge/instructions/lykhoyda/rn-dev-agent/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/lykhoyda/rn-dev-agent/agents-md"><img src="https://agentmods.dev/badge/instructions/lykhoyda/rn-dev-agent/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 | $0.07952 | $0.07952 |
| Opus 5.5 | $0.03181 | $0.03181 |
| Sonnet 5.5 | $0.01590 | $0.01590 |
| Haiku 4.5 | $0.00795 | $0.00795 |
Grade A, and why
rn-dev-agent 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 17d 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 — 533 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guide For Agents
This file is for coding agents working in this repository. Keep it current and practical. Do not paste session memory, issue histories, or one-off debugging notes here.
Repository Map
- Root workspace: Yarn 4 workspace, managed by
package.jsonandyarn.lock. Usecorepack yarn ...from the repository root. packages/rn-dev-agent-core/: TypeScript MCP server, CDP bridge, device tools, learned actions, observability server.dist/is generated byyarn build/yarn build:weband is not committed.packages/claude-plugin/: the ONE directory Claude, Cursor, and Codex install (GH #892). Owns Claude manifests, Cursor Plugin manifests (.cursor-plugin/plugin.json,mcp.json), hooks, commands, agents, skills, templates, helper scripts, packaged native runners, runner manifest, the single bundled core runtime (rn-dev-agent-core/, host-neutral metadata), and the generated Codex adapters:.codex-plugin/plugin.json,codex.mcp.json,bin/,codex-skills/,codex-commands/,codex-agents/,codex-templates/,AGENTS-MD-TEMPLATE.md. Root.cursor-plugin/marketplace.jsonpoints here. Never hand-edit a generatedcodex-*/bin/path.packages/codex-plugin/: Codex AUTHORING source, not an install directory. Owns.codex-plugin/plugin.json,.mcp.json,bin/cdp-supervisor.js,src/plugin-health.ts,src/AGENTS-MD-TEMPLATE.md, adapted commands, agents, the 11 adapted domain skills, and templates;scripts/build-host-runtimes.tscopies them intopackages/claude-pluginand generates the 17 workflow skills there. Codex does not consume Claude hooks; "No plugin hooks" is expected.packages/shared-agent-knowledge/: canonical host-neutral workflow knowledge for skills, commands, agents, andtemplates/rn-agent/.packages/rn-fast-runner/: source iOS XCTest native runner.packages/rn-android-runner/: source Android UiAutomator native runner.apps/docs-site/: deliverable documentation site workspace.- Engineering processes, plans, stories/specifications, audits, diagnostics,
comparisons, competitor analyses, and general research live in the workspace
docs/; never add a top-leveldocs/tree here. Captain-approved architecture records belong in Anton Factoryarchitect-docs; link to either owner instead of copying.
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.
- 17d ago Changed · +4 lines · +101 tokens per session 6d18ad740c49
- 27d ago Changed · +22 lines · +416 tokens per session 16213b0d329f
- 1mo ago Changed · +6 lines · +100 tokens per session 6cf59b958b7d
- 1mo ago Changed · +12 lines · +191 tokens per session 8c546ceab2d0
- 1mo ago Changed · +16 lines · +258 tokens per session 3799186ae9fb
- 1mo ago Changed · +9 lines · +183 tokens per session 2e62ad50ceb7
- 1mo ago Changed · +10 lines · +183 tokens per session b90aac46fab0
- 1mo ago Changed · +12 lines · +189 tokens per session ef3267d418c0
- 1mo ago Changed · +7 lines · +123 tokens per session aa6d655e9bb0
- 1mo ago First seen · 435 lines · 6,208 tokens per session scan A c3bbc9ad07f9
rn-dev-agent AGENTS.md is an instructions file published in the GitHub repository Lykhoyda/rn-dev-agent (20 stars, last pushed today), licensed MIT. It adds 7,952 tokens to every session, about $0.0318 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 2026-08-30.
Other instructions, from other repositories
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).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).