rush-cli: Instructions file for Codex

AGENTS.md

rush-cli AGENTS.md is an instructions file for Codex, OpenCode from jamesdsizemore/rush-cli. It costs 4,954 tokens per session, scanned A, original, MIT.

A set of project instructions for contributing to Rush, a local command-line tool and stdio-only MCP server. It defines development checks, shared command behaviour, safety rules, and result formats.

In plain words
What is it for?
Developing Rush, maintaining its CLI and MCP interfaces, running its test and formatting checks, and reviewing changes for scope and safety.
Why use it?
It gives coding agents clear project rules, including how to test and lint the code, handle missing quality tools, protect secrets, and avoid unsafe release actions.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: positional $N argument; mentions AGENTS.md.

This is jamesdsizemore/rush-cli's own configuration. It tells Codex and OpenCode how to work on rush-cli itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything rush-cli configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jamesdsizemore/rush-cli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jamesdsizemore/rush-cli/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jamesdsizemore/rush-cli

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/jamesdsizemore/rush-cli/agents-md"><img src="https://agentmods.dev/badge/instructions/jamesdsizemore/rush-cli/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 4,954 This file is loaded in full into every session.
When invoked 4,954 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.04954 $0.04954
Opus 5.5 $0.01982 $0.01982
Sonnet 5.5 $0.00991 $0.00991
Haiku 4.5 $0.00495 $0.00495

Measured 13d ago against content hash b94930b35ba3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rush-cli 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 13d 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.

AGENTS.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Rush contributor guide

Project contract

  • Python 3.12 package managed with uv.
  • Rush is a local CLI and stdio-only MCP server. stdout is JSON-RPC while rush mcp serve is running; diagnostics and logs belong on stderr.
  • CLI commands and MCP registrations must call the same implementations in src/rush/tools/. Do not duplicate tool logic in the transport layer.
  • Quality engines are discovered from the environment, not bundled as Rush dependencies. A missing engine returns a structured skipped result.

Development

Hermes can expose another Python environment on PATH. From the repository root, use uv's project environment and explicit Python 3.12 selection on macOS, Linux, and Windows:

uv run --python 3.12 --extra dev python --version
uv run --python 3.12 --extra dev python -m pytest tests/ -q
uv run --python 3.12 --extra dev ruff check src tests scripts
uv run --python 3.12 --extra dev ruff format --check src tests scripts

The version check must report Python 3.12. Clear inherited PYTHONPATH before running tests so imports resolve to this checkout's src/ tree.

Karpathy coding guidelines

  1. Think before coding. State material assumptions explicitly. Resolve ambiguity before implementation; never silently choose a different scope. Surface simpler approaches and relevant tradeoffs.
  2. Simplicity first. Write the minimum code that solves the requested problem. No speculative features, single-use abstractions, unrequested configurability, or error handling for impossible scenarios.
  3. Surgical changes. Every changed line must trace directly to the user's request. Match existing style. Do not improve adjacent code, comments, or formatting. Remove only imports, variables, and functions made unused by the current change; preserve unrelated pre-existing code.
  4. Verifiable outcomes. Define concrete success criteria before editing. Reproduce bugs with failing tests, make the minimum fix, and verify the required behavior. For multi-step work, pair each bounded step with its check. Do not claim completion from unexecuted or insufficient verification.

Read the full file on GitHub · 265 lines

Changes

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.

  1. 13d ago Changed · +109 lines · +2,978 tokens per session b94930b35ba3
  2. 1mo ago Changed · +35 lines · +383 tokens per session 2afac2e89ed5
  3. 1mo ago Changed · +48 lines · +827 tokens per session e43dc1e98657
  4. 1mo ago First seen · 73 lines · 766 tokens per session scan A c837da1b6ce7

Subscribe to this mod's changes

rush-cli AGENTS.md is an instructions file published in the GitHub repository jamesdsizemore/rush-cli (0 stars, last pushed 2d ago), licensed MIT. It adds 4,954 tokens to every session, about $0.0198 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 2026-08-31.

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